Merging upstream version 1.44.3.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

21 files changed, 1646 insertions, 0 deletions

diff --git a/aclk/aclk-schemas/.gitignore b/aclk/aclk-schemas/.gitignore
new file mode 100644
index 00000000..bd495e9a
--- /dev/null
+++ b/aclk/aclk-schemas/.gitignore
@@ -0,0 +1,11 @@
+*.pb.go
+
+#Agent
+*.pb.cc
+*.pb.h
+*.pb.o
+*.pb.Po
+.dirstamp
+
+#Jetbrains
+.idea
diff --git a/aclk/aclk-schemas/.travis.yml b/aclk/aclk-schemas/.travis.yml
new file mode 100644
index 00000000..7c99550f
--- /dev/null
+++ b/aclk/aclk-schemas/.travis.yml
@@ -0,0 +1,4 @@
+---
+language: minimal
+install: make deps
+script: make CI
diff --git a/aclk/aclk-schemas/LICENSE b/aclk/aclk-schemas/LICENSE
new file mode 100644
index 00000000..f288702d
--- /dev/null
+++ b/aclk/aclk-schemas/LICENSE
@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+  To protect your rights, we need to prevent others from denying you
+these rights or asking you to surrender the rights.  Therefore, you have
+certain responsibilities if you distribute copies of the software, or if
+you modify it: responsibilities to respect the freedom of others.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must pass on to the recipients the same
+freedoms that you received.  You must make sure that they, too, receive
+or can get the source code.  And you must show them these terms so they
+know their rights.
+
+  Developers that use the GNU GPL protect your rights with two steps:
+(1) assert copyright on the software, and (2) offer you this License
+giving you legal permission to copy, distribute and/or modify it.
+
+  For the developers' and authors' protection, the GPL clearly explains
+that there is no warranty for this free software.  For both users' and
+authors' sake, the GPL requires that modified versions be marked as
+changed, so that their problems will not be attributed erroneously to
+authors of previous versions.
+
+  Some devices are designed to deny users access to install or run
+modified versions of the software inside them, although the manufacturer
+can do so.  This is fundamentally incompatible with the aim of
+protecting users' freedom to change the software.  The systematic
+pattern of such abuse occurs in the area of products for individuals to
+use, which is precisely where it is most unacceptable.  Therefore, we
+have designed this version of the GPL to prohibit the practice for those
+products.  If such problems arise substantially in other domains, we
+stand ready to extend this provision to those domains in future versions
+of the GPL, as needed to protect the freedom of users.
+
+  Finally, every program is threatened constantly by software patents.
+States should not allow patents to restrict development and use of
+software on general-purpose computers, but in those that do, we wish to
+avoid the special danger that patents applied to a free program could
+make it effectively proprietary.  To prevent this, the GPL assures that
+patents cannot be used to render the program non-free.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                       TERMS AND CONDITIONS
+
+  0. Definitions.
+
+  "This License" refers to version 3 of the GNU General Public License.
+
+  "Copyright" also means copyright-like laws that apply to other kinds of
+works, such as semiconductor masks.
+
+  "The Program" refers to any copyrightable work licensed under this
+License.  Each licensee is addressed as "you".  "Licensees" and
+"recipients" may be individuals or organizations.
+
+  To "modify" a work means to copy from or adapt all or part of the work
+in a fashion requiring copyright permission, other than the making of an
+exact copy.  The resulting work is called a "modified version" of the
+earlier work or a work "based on" the earlier work.
+
+  A "covered work" means either the unmodified Program or a work based
+on the Program.
+
+  To "propagate" a work means to do anything with it that, without
+permission, would make you directly or secondarily liable for
+infringement under applicable copyright law, except executing it on a
+computer or modifying a private copy.  Propagation includes copying,
+distribution (with or without modification), making available to the
+public, and in some countries other activities as well.
+
+  To "convey" a work means any kind of propagation that enables other
+parties to make or receive copies.  Mere interaction with a user through
+a computer network, with no transfer of a copy, is not conveying.
+
+  An interactive user interface displays "Appropriate Legal Notices"
+to the extent that it includes a convenient and prominently visible
+feature that (1) displays an appropriate copyright notice, and (2)
+tells the user that there is no warranty for the work (except to the
+extent that warranties are provided), that licensees may convey the
+work under this License, and how to view a copy of this License.  If
+the interface presents a list of user commands or options, such as a
+menu, a prominent item in the list meets this criterion.
+
+  1. Source Code.
+
+  The "source code" for a work means the preferred form of the work
+for making modifications to it.  "Object code" means any non-source
+form of a work.
+
+  A "Standard Interface" means an interface that either is an official
+standard defined by a recognized standards body, or, in the case of
+interfaces specified for a particular programming language, one that
+is widely used among developers working in that language.
+
+  The "System Libraries" of an executable work include anything, other
+than the work as a whole, that (a) is included in the normal form of
+packaging a Major Component, but which is not part of that Major
+Component, and (b) serves only to enable use of the work with that
+Major Component, or to implement a Standard Interface for which an
+implementation is available to the public in source code form.  A
+"Major Component", in this context, means a major essential component
+(kernel, window system, and so on) of the specific operating system
+(if any) on which the executable work runs, or a compiler used to
+produce the work, or an object code interpreter used to run it.
+
+  The "Corresponding Source" for a work in object code form means all
+the source code needed to generate, install, and (for an executable
+work) run the object code and to modify the work, including scripts to
+control those activities.  However, it does not include the work's
+System Libraries, or general-purpose tools or generally available free
+programs which are used unmodified in performing those activities but
+which are not part of the work.  For example, Corresponding Source
+includes interface definition files associated with source files for
+the work, and the source code for shared libraries and dynamically
+linked subprograms that the work is specifically designed to require,
+such as by intimate data communication or control flow between those
+subprograms and other parts of the work.
+
+  The Corresponding Source need not include anything that users
+can regenerate automatically from other parts of the Corresponding
+Source.
+
+  The Corresponding Source for a work in source code form is that
+same work.
+
+  2. Basic Permissions.
+
+  All rights granted under this License are granted for the term of
+copyright on the Program, and are irrevocable provided the stated
+conditions are met.  This License explicitly affirms your unlimited
+permission to run the unmodified Program.  The output from running a
+covered work is covered by this License only if the output, given its
+content, constitutes a covered work.  This License acknowledges your
+rights of fair use or other equivalent, as provided by copyright law.
+
+  You may make, run and propagate covered works that you do not
+convey, without conditions so long as your license otherwise remains
+in force.  You may convey covered works to others for the sole purpose
+of having them make modifications exclusively for you, or provide you
+with facilities for running those works, provided that you comply with
+the terms of this License in conveying all material for which you do
+not control copyright.  Those thus making or running the covered works
+for you must do so exclusively on your behalf, under your direction
+and control, on terms that prohibit them from making any copies of
+your copyrighted material outside their relationship with you.
+
+  Conveying under any other circumstances is permitted solely under
+the conditions stated below.  Sublicensing is not allowed; section 10
+makes it unnecessary.
+
+  3. Protecting Users' Legal Rights From Anti-Circumvention Law.
+
+  No covered work shall be deemed part of an effective technological
+measure under any applicable law fulfilling obligations under article
+11 of the WIPO copyright treaty adopted on 20 December 1996, or
+similar laws prohibiting or restricting circumvention of such
+measures.
+
+  When you convey a covered work, you waive any legal power to forbid
+circumvention of technological measures to the extent such circumvention
+is effected by exercising rights under this License with respect to
+the covered work, and you disclaim any intention to limit operation or
+modification of the work as a means of enforcing, against the work's
+users, your or third parties' legal rights to forbid circumvention of
+technological measures.
+
+  4. Conveying Verbatim Copies.
+
+  You may convey verbatim copies of the Program's source code as you
+receive it, in any medium, provided that you conspicuously and
+appropriately publish on each copy an appropriate copyright notice;
+keep intact all notices stating that this License and any
+non-permissive terms added in accord with section 7 apply to the code;
+keep intact all notices of the absence of any warranty; and give all
+recipients a copy of this License along with the Program.
+
+  You may charge any price or no price for each copy that you convey,
+and you may offer support or warranty protection for a fee.
+
+  5. Conveying Modified Source Versions.
+
+  You may convey a work based on the Program, or the modifications to
+produce it from the Program, in the form of source code under the
+terms of section 4, provided that you also meet all of these conditions:
+
+    a) The work must carry prominent notices stating that you modified
+    it, and giving a relevant date.
+
+    b) The work must carry prominent notices stating that it is
+    released under this License and any conditions added under section
+    7.  This requirement modifies the requirement in section 4 to
+    "keep intact all notices".
+
+    c) You must license the entire work, as a whole, under this
+    License to anyone who comes into possession of a copy.  This
+    License will therefore apply, along with any applicable section 7
+    additional terms, to the whole of the work, and all its parts,
+    regardless of how they are packaged.  This License gives no
+    permission to license the work in any other way, but it does not
+    invalidate such permission if you have separately received it.
+
+    d) If the work has interactive user interfaces, each must display
+    Appropriate Legal Notices; however, if the Program has interactive
+    interfaces that do not display Appropriate Legal Notices, your
+    work need not make them do so.
+
+  A compilation of a covered work with other separate and independent
+works, which are not by their nature extensions of the covered work,
+and which are not combined with it such as to form a larger program,
+in or on a volume of a storage or distribution medium, is called an
+"aggregate" if the compilation and its resulting copyright are not
+used to limit the access or legal rights of the compilation's users
+beyond what the individual works permit.  Inclusion of a covered work
+in an aggregate does not cause this License to apply to the other
+parts of the aggregate.
+
+  6. Conveying Non-Source Forms.
+
+  You may convey a covered work in object code form under the terms
+of sections 4 and 5, provided that you also convey the
+machine-readable Corresponding Source under the terms of this License,
+in one of these ways:
+
+    a) Convey the object code in, or embodied in, a physical product
+    (including a physical distribution medium), accompanied by the
+    Corresponding Source fixed on a durable physical medium
+    customarily used for software interchange.
+
+    b) Convey the object code in, or embodied in, a physical product
+    (including a physical distribution medium), accompanied by a
+    written offer, valid for at least three years and valid for as
+    long as you offer spare parts or customer support for that product
+    model, to give anyone who possesses the object code either (1) a
+    copy of the Corresponding Source for all the software in the
+    product that is covered by this License, on a durable physical
+    medium customarily used for software interchange, for a price no
+    more than your reasonable cost of physically performing this
+    conveying of source, or (2) access to copy the
+    Corresponding Source from a network server at no charge.
+
+    c) Convey individual copies of the object code with a copy of the
+    written offer to provide the Corresponding Source.  This
+    alternative is allowed only occasionally and noncommercially, and
+    only if you received the object code with such an offer, in accord
+    with subsection 6b.
+
+    d) Convey the object code by offering access from a designated
+    place (gratis or for a charge), and offer equivalent access to the
+    Corresponding Source in the same way through the same place at no
+    further charge.  You need not require recipients to copy the
+    Corresponding Source along with the object code.  If the place to
+    copy the object code is a network server, the Corresponding Source
+    may be on a different server (operated by you or a third party)
+    that supports equivalent copying facilities, provided you maintain
+    clear directions next to the object code saying where to find the
+    Corresponding Source.  Regardless of what server hosts the
+    Corresponding Source, you remain obligated to ensure that it is
+    available for as long as needed to satisfy these requirements.
+
+    e) Convey the object code using peer-to-peer transmission, provided
+    you inform other peers where the object code and Corresponding
+    Source of the work are being offered to the general public at no
+    charge under subsection 6d.
+
+  A separable portion of the object code, whose source code is excluded
+from the Corresponding Source as a System Library, need not be
+included in conveying the object code work.
+
+  A "User Product" is either (1) a "consumer product", which means any
+tangible personal property which is normally used for personal, family,
+or household purposes, or (2) anything designed or sold for incorporation
+into a dwelling.  In determining whether a product is a consumer product,
+doubtful cases shall be resolved in favor of coverage.  For a particular
+product received by a particular user, "normally used" refers to a
+typical or common use of that class of product, regardless of the status
+of the particular user or of the way in which the particular user
+actually uses, or expects or is expected to use, the product.  A product
+is a consumer product regardless of whether the product has substantial
+commercial, industrial or non-consumer uses, unless such uses represent
+the only significant mode of use of the product.
+
+  "Installation Information" for a User Product means any methods,
+procedures, authorization keys, or other information required to install
+and execute modified versions of a covered work in that User Product from
+a modified version of its Corresponding Source.  The information must
+suffice to ensure that the continued functioning of the modified object
+code is in no case prevented or interfered with solely because
+modification has been made.
+
+  If you convey an object code work under this section in, or with, or
+specifically for use in, a User Product, and the conveying occurs as
+part of a transaction in which the right of possession and use of the
+User Product is transferred to the recipient in perpetuity or for a
+fixed term (regardless of how the transaction is characterized), the
+Corresponding Source conveyed under this section must be accompanied
+by the Installation Information.  But this requirement does not apply
+if neither you nor any third party retains the ability to install
+modified object code on the User Product (for example, the work has
+been installed in ROM).
+
+  The requirement to provide Installation Information does not include a
+requirement to continue to provide support service, warranty, or updates
+for a work that has been modified or installed by the recipient, or for
+the User Product in which it has been modified or installed.  Access to a
+network may be denied when the modification itself materially and
+adversely affects the operation of the network or violates the rules and
+protocols for communication across the network.
+
+  Corresponding Source conveyed, and Installation Information provided,
+in accord with this section must be in a format that is publicly
+documented (and with an implementation available to the public in
+source code form), and must require no special password or key for
+unpacking, reading or copying.
+
+  7. Additional Terms.
+
+  "Additional permissions" are terms that supplement the terms of this
+License by making exceptions from one or more of its conditions.
+Additional permissions that are applicable to the entire Program shall
+be treated as though they were included in this License, to the extent
+that they are valid under applicable law.  If additional permissions
+apply only to part of the Program, that part may be used separately
+under those permissions, but the entire Program remains governed by
+this License without regard to the additional permissions.
+
+  When you convey a copy of a covered work, you may at your option
+remove any additional permissions from that copy, or from any part of
+it.  (Additional permissions may be written to require their own
+removal in certain cases when you modify the work.)  You may place
+additional permissions on material, added by you to a covered work,
+for which you have or can give appropriate copyright permission.
+
+  Notwithstanding any other provision of this License, for material you
+add to a covered work, you may (if authorized by the copyright holders of
+that material) supplement the terms of this License with terms:
+
+    a) Disclaiming warranty or limiting liability differently from the
+    terms of sections 15 and 16 of this License; or
+
+    b) Requiring preservation of specified reasonable legal notices or
+    author attributions in that material or in the Appropriate Legal
+    Notices displayed by works containing it; or
+
+    c) Prohibiting misrepresentation of the origin of that material, or
+    requiring that modified versions of such material be marked in
+    reasonable ways as different from the original version; or
+
+    d) Limiting the use for publicity purposes of names of licensors or
+    authors of the material; or
+
+    e) Declining to grant rights under trademark law for use of some
+    trade names, trademarks, or service marks; or
+
+    f) Requiring indemnification of licensors and authors of that
+    material by anyone who conveys the material (or modified versions of
+    it) with contractual assumptions of liability to the recipient, for
+    any liability that these contractual assumptions directly impose on
+    those licensors and authors.
+
+  All other non-permissive additional terms are considered "further
+restrictions" within the meaning of section 10.  If the Program as you
+received it, or any part of it, contains a notice stating that it is
+governed by this License along with a term that is a further
+restriction, you may remove that term.  If a license document contains
+a further restriction but permits relicensing or conveying under this
+License, you may add to a covered work material governed by the terms
+of that license document, provided that the further restriction does
+not survive such relicensing or conveying.
+
+  If you add terms to a covered work in accord with this section, you
+must place, in the relevant source files, a statement of the
+additional terms that apply to those files, or a notice indicating
+where to find the applicable terms.
+
+  Additional terms, permissive or non-permissive, may be stated in the
+form of a separately written license, or stated as exceptions;
+the above requirements apply either way.
+
+  8. Termination.
+
+  You may not propagate or modify a covered work except as expressly
+provided under this License.  Any attempt otherwise to propagate or
+modify it is void, and will automatically terminate your rights under
+this License (including any patent licenses granted under the third
+paragraph of section 11).
+
+  However, if you cease all violation of this License, then your
+license from a particular copyright holder is reinstated (a)
+provisionally, unless and until the copyright holder explicitly and
+finally terminates your license, and (b) permanently, if the copyright
+holder fails to notify you of the violation by some reasonable means
+prior to 60 days after the cessation.
+
+  Moreover, your license from a particular copyright holder is
+reinstated permanently if the copyright holder notifies you of the
+violation by some reasonable means, this is the first time you have
+received notice of violation of this License (for any work) from that
+copyright holder, and you cure the violation prior to 30 days after
+your receipt of the notice.
+
+  Termination of your rights under this section does not terminate the
+licenses of parties who have received copies or rights from you under
+this License.  If your rights have been terminated and not permanently
+reinstated, you do not qualify to receive new licenses for the same
+material under section 10.
+
+  9. Acceptance Not Required for Having Copies.
+
+  You are not required to accept this License in order to receive or
+run a copy of the Program.  Ancillary propagation of a covered work
+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance.  However,
+nothing other than this License grants you permission to propagate or
+modify any covered work.  These actions infringe copyright if you do
+not accept this License.  Therefore, by modifying or propagating a
+covered work, you indicate your acceptance of this License to do so.
+
+  10. Automatic Licensing of Downstream Recipients.
+
+  Each time you convey a covered work, the recipient automatically
+receives a license from the original licensors, to run, modify and
+propagate that work, subject to this License.  You are not responsible
+for enforcing compliance by third parties with this License.
+
+  An "entity transaction" is a transaction transferring control of an
+organization, or substantially all assets of one, or subdividing an
+organization, or merging organizations.  If propagation of a covered
+work results from an entity transaction, each party to that
+transaction who receives a copy of the work also receives whatever
+licenses to the work the party's predecessor in interest had or could
+give under the previous paragraph, plus a right to possession of the
+Corresponding Source of the work from the predecessor in interest, if
+the predecessor has it or can get it with reasonable efforts.
+
+  You may not impose any further restrictions on the exercise of the
+rights granted or affirmed under this License.  For example, you may
+not impose a license fee, royalty, or other charge for exercise of
+rights granted under this License, and you may not initiate litigation
+(including a cross-claim or counterclaim in a lawsuit) alleging that
+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+  11. Patents.
+
+  A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based.  The
+work thus licensed is called the contributor's "contributor version".
+
+  A contributor's "essential patent claims" are all patent claims
+owned or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
+by this License, of making, using, or selling its contributor version,
+but do not include claims that would be infringed only as a
+consequence of further modification of the contributor version.  For
+purposes of this definition, "control" includes the right to grant
+patent sublicenses in a manner consistent with the requirements of
+this License.
+
+  Each contributor grants you a non-exclusive, worldwide, royalty-free
+patent license under the contributor's essential patent claims, to
+make, use, sell, offer for sale, import and otherwise run, modify and
+propagate the contents of its contributor version.
+
+  In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
+sue for patent infringement).  To "grant" such a patent license to a
+party means to make such an agreement or commitment not to enforce a
+patent against the party.
+
+  If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Use with the GNU Affero General Public License.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.
diff --git a/aclk/aclk-schemas/Makefile b/aclk/aclk-schemas/Makefile
new file mode 100644
index 00000000..8f400307
--- /dev/null
+++ b/aclk/aclk-schemas/Makefile
@@ -0,0 +1,74 @@
+SHELL := /usr/bin/env bash -o pipefail
+
+# This controls the location of the cache.
+PROJECT := cloud-schemas
+# This controls the remote HTTPS git location to compare against for breaking changes in CI.
+#
+# Most CI providers only clone the branch under test and to a certain depth, so when
+# running buf check breaking in CI, it is generally preferable to compare against
+# the remote repository directly.
+#
+# Basic authentication is available, see https://buf.build/docs/inputs#https for more details.
+HTTPS_GIT := https://github.com/netdata/cloud-schemas.git
+
+# This controls the version of buf to install and use.
+BUF_VERSION := 0.6.0
+
+### Everything below this line is meant to be static, i.e. only adjust the above variables. ###
+
+UNAME_OS := $(shell uname -s)
+UNAME_ARCH := $(shell uname -m)
+# Buf will be cached to ~/.cache/buf-example.
+CACHE_BASE := $(HOME)/.cache/$(PROJECT)
+# This allows switching between i.e a Docker container and your local setup without overwriting.
+CACHE := $(CACHE_BASE)/$(UNAME_OS)/$(UNAME_ARCH)
+# The location where buf will be installed.
+CACHE_BIN := $(CACHE)/bin
+# Marker files are put into this directory to denote the current version of binaries that are installed.
+CACHE_VERSIONS := $(CACHE)/versions
+
+# Update the $PATH so we can use buf directly
+export PATH := $(abspath $(CACHE_BIN)):$(PATH)
+
+# BUF points to the marker file for the installed version.
+#
+# If BUF_VERSION is changed, the binary will be re-downloaded.
+BUF := $(CACHE_VERSIONS)/buf/$(BUF_VERSION)
+$(BUF):
+	@rm -f $(CACHE_BIN)/buf
+	@mkdir -p $(CACHE_BIN)
+	curl -sSL \
+		"https://github.com/bufbuild/buf/releases/download/v$(BUF_VERSION)/buf-$(UNAME_OS)-$(UNAME_ARCH)" \
+		-o "$(CACHE_BIN)/buf"
+	chmod +x "$(CACHE_BIN)/buf"
+	@rm -rf $(dir $(BUF))
+	@mkdir -p $(dir $(BUF))
+	@touch $(BUF)
+
+.DEFAULT_GOAL := local
+
+# deps allows us to install deps without running any checks.
+
+.PHONY: deps
+deps: $(BUF)
+
+# local is what we run when testing locally.
+# This does breaking change detection against our local git repository.
+
+.PHONY: local
+local: $(BUF)
+	buf check lint ./proto
+	buf check breaking --against '.git#branch=master'
+
+# https is what we run when testing in most CI providers.
+# This does breaking change detection against our  git repository.
+
+.PHONY: CI
+CI: $(BUF)
+	buf check lint ./proto
+	buf check breaking --against ".git#branch=master"
+
+.PHONY: clean
+clean:
+	git clean -xdf
+	rm -rf $(CACHE_BASE)
\ No newline at end of file
diff --git a/aclk/aclk-schemas/README.md b/aclk/aclk-schemas/README.md
new file mode 100644
index 00000000..aa618897
--- /dev/null
+++ b/aclk/aclk-schemas/README.md
@@ -0,0 +1,2 @@
+# aclk-schemas
+Protobuf schemas used in ACLK connection
diff --git a/aclk/aclk-schemas/buf.yml b/aclk/aclk-schemas/buf.yml
new file mode 100644
index 00000000..532053d9
--- /dev/null
+++ b/aclk/aclk-schemas/buf.yml
@@ -0,0 +1,9 @@
+build:
+  roots:
+    - proto
+lint:
+  use:
+    - DEFAULT
+breaking:
+  use:
+    - FILE
diff --git a/aclk/aclk-schemas/proto/aclk/v1/lib.proto b/aclk/aclk-schemas/proto/aclk/v1/lib.proto
new file mode 100644
index 00000000..f32c32c6
--- /dev/null
+++ b/aclk/aclk-schemas/proto/aclk/v1/lib.proto
@@ -0,0 +1,22 @@
+syntax = "proto3";
+
+package aclk_lib.v1;
+
+import "google/protobuf/timestamp.proto";
+
+option go_package = "aclk_lib/v1;aclklib";
+
+// ACLKMessagePosition is used by sequenced messages to define their exact position
+message ACLKMessagePosition {
+  uint64 sequence_id = 1;
+  // auto generated in Agent's DB upon sequence_id creation
+  google.protobuf.Timestamp seq_id_created_at = 2;
+  uint64 previous_sequence_id = 3;
+}
+
+message Capability {
+  string name = 1;
+  uint32 version = 2;
+  // version == 0 is equivalent to not having the capability at all
+  bool enabled = 3;
+}
diff --git a/aclk/aclk-schemas/proto/agent/v1/cmds.proto b/aclk/aclk-schemas/proto/agent/v1/cmds.proto
new file mode 100644
index 00000000..c37c00c3
--- /dev/null
+++ b/aclk/aclk-schemas/proto/agent/v1/cmds.proto
@@ -0,0 +1,79 @@
+syntax = "proto3";
+option go_package = "agent/v1;agent";
+
+package agent.v1;
+
+import "google/protobuf/timestamp.proto";
+import "proto/aclk/v1/lib.proto";
+
+message CancelPendingRequest {
+    // must match the ID sent with the request originally made
+    // other than this agent will not put conditions on it
+    // and will treat it as opaque string (it simply has to match)
+    // However this doesn't mean there are no conditions on the id
+    // made on the request side
+    string request_id = 1;
+
+    // time when the cancellation request was generated
+    google.protobuf.Timestamp timestamp = 2;
+
+    // optional might be useful for debugging purposes
+    string trace_id = 3;
+}
+
+// AgentCommand is sent from the Cloud to the Agent at `/agent/{claim_id}/inbound/v1/cmd/AgentCommand`
+// the message includes the resource that the Cloud needs to GET from the Agent HTTP API along with related metadata
+message AgentCommand {
+    // the topic to which the Cloud awaits for the AgentCommandResponse.
+    // example: `/svc/agent-data-ctrl/2d7b7edd-561e-4aec-8ac1-466a585520f5/resp`
+    string callback_topic = 1;
+    // the topic to which the Cloud awaits for the AgentCommandAck.
+    // example: `/svc/agent-data-ctrl/2d7b7edd-561e-4aec-8ac1-466a585520f5/resp`
+    string ack_topic = 2;
+    // unique identifier for the AgentCommand
+    // example: `617038b3-7c2a-4617-a78f-ab37bd820198`
+    string message_id = 3;
+    // defined in milliseconds, the time the Agent has to respond before Cloud
+    // considering the request as timed-out
+    // example: `60000`
+    uint64 timeout = 4;
+    // defined in milliseconds, the time the Agent has to send back to the Cloud
+    // an AgentCommandAck message signaling that is still working on the request
+    // example: `3000`
+    uint64 ack_timeout = 5;
+    // the requested Agent resource
+    // example: `/api/v2/data?query_params_go_here`
+    string resource = 6;
+}
+
+// AgentCommandAck is sent from the Agent to the Cloud at predefined intervals (`AgentCommand.ack_timeout`) to predefined topic (`AgentCommand.ack_topic`)
+// signaling that the Agent is still working to serve an AgentCommand (referenced by the message_id) that the Cloud sent
+message AgentCommandAck {
+    // unique identifier to reference AgentCommand on which the Agent is still working on serving
+    // example: `617038b3-7c2a-4617-a78f-ab37bd820198`
+    string message_id = 1;
+    // the timestamp when the Agent created this AgentCommandAck message
+    google.protobuf.Timestamp created_at = 2;
+    // integer revealing the progress of completion to serve the AgentCommand with the given message_id
+    // example: `25`
+    uint32 progress_percent = 3;
+}
+
+// AgentCommandResponse is sent from the Agent to the Cloud at `/agent/{claim_id}/inbound/v1/cmd/AgentCommand`
+// the message includes the resource that the Cloud needs to GET from the Agent HTTP API along with related metadata
+message AgentCommandResponse {
+    // unique identifier for the AgentCommand
+    // example: `617038b3-7c2a-4617-a78f-ab37bd820198`
+    string message_id = 1;
+    // the (http) status code of the Agent's API response
+    // example: `200`
+    uint32 status_code = 2;
+    // the dumped raw (http) response the Agent's API returned
+    bytes response = 3;
+    // the Agent's timestamp (aka legacy `timestamp`)
+    google.protobuf.Timestamp timestamp = 4;
+    // the timestamp when the Agent received the AgentCommand for execution (aka legacy `t-rx`)
+    google.protobuf.Timestamp received_at = 5;
+    // the amount of microseconds the Agent needed to execute the HTTP request of the AgentCommand (aka legacy`t-exec`)
+    uint64 exec_time = 6;
+}
diff --git a/aclk/aclk-schemas/proto/agent/v1/connection.proto b/aclk/aclk-schemas/proto/agent/v1/connection.proto
new file mode 100644
index 00000000..4321b0b9
--- /dev/null
+++ b/aclk/aclk-schemas/proto/agent/v1/connection.proto
@@ -0,0 +1,59 @@
+syntax = "proto3";
+option go_package = "agent/v1;agent";
+
+package agent.v1;
+
+import "google/protobuf/timestamp.proto";
+import "google/protobuf/duration.proto";
+import "proto/aclk/v1/lib.proto";
+
+message UpdateAgentConnection {
+    string claim_id = 1;
+    bool reachable = 2;
+
+    int64 session_id = 3;
+
+    ConnectionUpdateSource update_source = 4;
+
+    // mqtt_broker_addr shard to use for reaching the agent
+    // cloud injects this information
+    string mqtt_broker_addr = 5;
+
+    google.protobuf.Timestamp updated_at = 6;
+
+    // vmq_instance_id broker shard to use for reaching the agent
+    // cloud injects this information
+    int32 vmq_instance_id = 7;
+
+    // > 15 optional fields:
+    // How long the system was running until connection (only applicable when reachable=true)
+    google.protobuf.Duration system_uptime = 15;
+
+    // How long the netdata agent was running until connection (only applicable when reachable=true)
+    google.protobuf.Duration agent_uptime = 16;
+
+    repeated aclk_lib.v1.Capability capabilities = 17;
+}
+
+message SendNodeInstances {
+    string claim_id = 1;
+    Config config = 2;
+}
+
+// ConnectionUpdateSource is to determine whether the connection update was issued 
+enum ConnectionUpdateSource {
+    // CONNECTION_UPDATE_SOURCE_UNSPECIFIED acts as default value for protobuf and is never specified
+    CONNECTION_UPDATE_SOURCE_UNSPECIFIED = 0;
+    // CONNECTION_UPDATE_SOURCE_AGENT A direct message from an agent
+    CONNECTION_UPDATE_SOURCE_AGENT = 1;
+    // CONNECTION_UPDATE_SOURCE_LWT message delivered as the Last Will and Testiment  from MQTT broker if an agent connection with the broker is lost 
+    CONNECTION_UPDATE_SOURCE_LWT = 2;
+    // CONNECTION_UPDATE_SOURCE_HEURISTIC A cloud generated message to sanitize incorrect internal state
+    CONNECTION_UPDATE_SOURCE_HEURISTIC = 3;
+}
+
+message Config {
+    bool bearer_protection = 1;
+    bool cloud_only_notifications = 2;
+    bool universal_dashboards = 3;
+}
diff --git a/aclk/aclk-schemas/proto/agent/v1/disconnect.proto b/aclk/aclk-schemas/proto/agent/v1/disconnect.proto
new file mode 100644
index 00000000..852ef702
--- /dev/null
+++ b/aclk/aclk-schemas/proto/agent/v1/disconnect.proto
@@ -0,0 +1,16 @@
+syntax = "proto3";
+
+package agent.v1;
+
+import "google/protobuf/timestamp.proto";
+
+option go_package = "agent/v1;agent";
+
+// Sent by Cloud to instruct Agent to disconnect ASAP
+message DisconnectReq {
+  uint64 reconnect_after_seconds = 1;
+  bool permaban = 2;
+  google.protobuf.Timestamp created_at = 3;
+  uint32 error_code = 4;
+  string error_description = 5;
+}
diff --git a/aclk/aclk-schemas/proto/alarm/v1/config.proto b/aclk/aclk-schemas/proto/alarm/v1/config.proto
new file mode 100644
index 00000000..430078fc
--- /dev/null
+++ b/aclk/aclk-schemas/proto/alarm/v1/config.proto
@@ -0,0 +1,61 @@
+syntax = "proto3";
+
+package alarms.v1;
+
+option go_package = "alarms/v1;alarms";
+
+message SendAlarmConfiguration{
+    string config_hash = 1;
+}
+
+message ProvideAlarmConfiguration {
+    string config_hash = 1;
+    AlarmConfiguration config = 2;
+}
+
+message AlarmConfiguration{
+    string alarm = 1;
+    string template = 2;
+    string on_chart = 3;
+    
+    string classification = 4;
+    string type = 5;
+    string component = 6;
+        
+    string os = 7;
+    string hosts = 8;
+    string plugin = 9;
+    string module = 10;
+    string charts = 11;
+    string families = 12;
+    string lookup = 13;
+    string every = 14;
+    string units = 15;
+
+    string green = 16;
+    string red = 17;
+
+    string calculation_expr = 18;
+    string warning_expr = 19;
+    string critical_expr = 20;
+    
+    string recipient = 21;
+    string exec = 22;
+    string delay = 23;
+    string repeat = 24;
+    string info = 25;
+    string options = 26;
+    string host_labels = 27;
+    
+    //parsed values from above config values
+    //indicated by p_
+    int32 p_db_lookup_after = 28;
+    int32 p_db_lookup_before = 29;
+    string p_db_lookup_dimensions = 30;
+    string p_db_lookup_method = 31;
+    string p_db_lookup_options = 32;
+    int32 p_update_every = 33;
+
+    string chart_labels = 34;
+    string summary = 35;
+}
diff --git a/aclk/aclk-schemas/proto/alarm/v1/stream.proto b/aclk/aclk-schemas/proto/alarm/v1/stream.proto
new file mode 100644
index 00000000..44f19068
--- /dev/null
+++ b/aclk/aclk-schemas/proto/alarm/v1/stream.proto
@@ -0,0 +1,148 @@
+syntax = "proto3";
+
+package alarms.v1;
+
+import "google/protobuf/timestamp.proto";
+
+option go_package = "alarms/v1;alarms";
+
+message SendAlarmLogHealth {
+    string node_id = 1;
+}
+
+message AlarmLogHealth {
+    string claim_id = 1;
+    string node_id = 2;
+    bool enabled = 3;
+    AlarmLogStatus status = 4;
+    LogEntries log_entries = 5;
+}
+
+message LogEntries {
+    int64 first_sequence_id = 1;
+    google.protobuf.Timestamp first_when = 2;
+
+    int64 last_sequence_id = 3;
+    google.protobuf.Timestamp last_when = 4;
+}
+
+enum AlarmLogStatus {
+    ALARM_LOG_STATUS_UNSPECIFIED = 0;
+    ALARM_LOG_STATUS_RUNNING = 1;
+    ALARM_LOG_STATUS_IDLE = 2;
+}
+
+message StartAlarmStreaming {
+    string node_id = 1;
+    uint64 batch_id = 2 [deprecated=true];
+    uint64 start_sequnce_id = 3 [deprecated=true];
+    // Instructs the agent to sync all configured alarms
+    bool resets = 4;
+}
+
+message SendAlarmCheckpoint {
+    string node_id = 1;
+    string claim_id = 2;
+}
+
+message AlarmCheckpoint {
+    string node_id = 1;
+    string claim_id = 2;
+    bytes checksum = 3;
+}
+
+message AlarmLogEntry {
+    string node_id = 1;
+    string claim_id = 2;
+
+    // The chart's id field
+    string chart = 3;
+    string name = 4;
+    string family = 5;
+    uint64 batch_id = 6 [deprecated=true];
+    uint64 sequence_id = 7 [deprecated=true];
+    uint64 when = 8;
+
+    string config_hash = 9;
+
+    int32 utc_offset = 10;
+    string timezone = 11;
+
+    // Paths that can be custom for the same alarm, but depend on installation path for each user. Should be here or in config ?
+    string exec_path = 12;
+    string conf_source = 13;
+    string command = 14;
+
+    // In seconds, uint32 is safe ?
+    uint32 duration = 15;
+    uint32 non_clear_duration = 16;
+
+    AlarmStatus status = 17;
+    AlarmStatus old_status = 18;
+    uint64 delay = 19;
+    uint64 delay_up_to_timestamp = 20;
+    // Todo: verify that we need these. sequence_id doesn't suffice?
+    //  uint64 updated_by_id = 12;
+    //  uint64 updates_id = 13;
+    uint64 last_repeat = 21;
+    bool silenced = 22;
+
+    // Check if string values are needed
+    string value_string = 23;
+    string old_value_string = 24;
+
+    double value = 25;
+    double old_value = 26;
+
+    // Updated alarm entry, when the status of the alarm has been updated by a later entry
+    bool updated = 27;
+
+    // Rendered_info
+    string rendered_info = 28;
+
+    // The chart's context field
+    string chart_context = 29;
+
+    // Counter of alert transitions for this alert chain
+    uint64 event_id = 30;
+
+    // A unique uuid for this alert event
+    string transition_id = 31;
+
+    // The chart's name field
+    string chart_name = 32;
+
+    // The rendered summary
+    string summary = 33;
+}
+
+enum AlarmStatus {
+    ALARM_STATUS_NULL = 0;
+    ALARM_STATUS_UNKNOWN = 1;
+    ALARM_STATUS_REMOVED = 2;
+    ALARM_STATUS_NOT_A_NUMBER = 3;
+    ALARM_STATUS_CLEAR = 4;
+    ALARM_STATUS_WARNING = 5;
+    ALARM_STATUS_CRITICAL = 6;
+}
+
+// SendAlarmSnapshot: send from cloud to the agent, to initiate an AlarmSnapshot image of current alarms back to the cloud
+message SendAlarmSnapshot {
+    string node_id = 1;
+    string claim_id = 2;
+    uint64 snapshot_id = 3 [deprecated=true];
+    uint64 sequence_id = 4 [deprecated=true];
+    string snapshot_uuid = 5;
+}
+
+// Agent responds with AlarmSnapshot to a SendAlarmSnapshot message
+message AlarmSnapshot{
+    string node_id = 1;
+    string claim_id = 2;
+    uint64 snapshot_id = 3 [deprecated=true]; // Same id from SendAlarmSnapshot message
+    uint32 chunks = 4; // In case full snapshot can not fit in a single message, indicates the total number of messages for this snapshot_id
+    uint32 chunk_size = 5; // How many alerts this chunk contains
+    uint32 chunk = 6; // Chunk index of this message
+    repeated AlarmLogEntry alarms = 7; // a list of AlarmLogEntry's
+    string snapshot_uuid = 8;
+}
diff --git a/aclk/aclk-schemas/proto/chart/v1/config.proto b/aclk/aclk-schemas/proto/chart/v1/config.proto
new file mode 100644
index 00000000..f0c5e3a3
--- /dev/null
+++ b/aclk/aclk-schemas/proto/chart/v1/config.proto
@@ -0,0 +1,37 @@
+syntax = "proto3";
+
+package chart.v1;
+
+option go_package = "chart/config/v1;chartconfig";
+
+// UpdateChartConfigs command contains the list of missing chart configs from the cloud to agent
+message UpdateChartConfigs {
+  // claim_id, node_id pair is used to identify the Node Instance
+  string claim_id = 1;
+  string node_id = 2;
+  // list of config hashes missing from cloud and requested from the agent
+  repeated string config_hashes = 3;
+}
+
+message ChartConfigsUpdated {
+  repeated ChartConfigUpdated configs = 1;
+}
+
+message ChartConfigUpdated {
+  string type = 1;
+  string family = 2;
+  string context = 3;
+  string title = 4;
+  uint64 priority = 5;
+  string plugin = 6;
+  string module = 7;
+  ChartType chart_type = 8;
+  string units = 9;
+  string config_hash = 10;
+}
+
+enum ChartType {
+  LINE = 0;
+  AREA = 1;
+  STACKED = 2;
+}
diff --git a/aclk/aclk-schemas/proto/chart/v1/dimension.proto b/aclk/aclk-schemas/proto/chart/v1/dimension.proto
new file mode 100644
index 00000000..8bcb564b
--- /dev/null
+++ b/aclk/aclk-schemas/proto/chart/v1/dimension.proto
@@ -0,0 +1,24 @@
+syntax = "proto3";
+
+package chart.v1;
+
+import "google/protobuf/timestamp.proto";
+
+import "proto/aclk/v1/lib.proto";
+
+option go_package = "chart/dimension/v1;chartdimension";
+
+// ChartDimensionUpdated is a single event sent from the Agent to the Cloud containing chart dimension data.
+//
+// ChartDimensionUpdated messages are dispatched in bulk to the Cloud wrapped in ChartsAndDimensionsUpdated messages.
+message ChartDimensionUpdated {
+  string id = 1;
+  string chart_id = 2;
+  string node_id = 3;
+  string claim_id = 4;
+  string name = 5;
+  google.protobuf.Timestamp created_at = 6;
+  // null value means that the dimension is currently collected (live)
+  google.protobuf.Timestamp last_timestamp = 7;
+  aclk_lib.v1.ACLKMessagePosition position = 8;
+}
diff --git a/aclk/aclk-schemas/proto/chart/v1/instance.proto b/aclk/aclk-schemas/proto/chart/v1/instance.proto
new file mode 100644
index 00000000..25c99e7c
--- /dev/null
+++ b/aclk/aclk-schemas/proto/chart/v1/instance.proto
@@ -0,0 +1,32 @@
+syntax = "proto3";
+
+package chart.v1;
+
+import "proto/aclk/v1/lib.proto";
+
+option go_package = "chart/instance/v1;chartinstance";
+
+// ChartInstanceUpdated is a single event sent from the Agent to the Cloud containing chart instance data.
+//
+// ChartInstanceUpdated messages are dispatched in bulk to the Cloud wrapped in ChartsAndDimensionsUpdated messages.
+message ChartInstanceUpdated {
+  string id = 1;
+  string claim_id = 2;
+  string node_id = 3;
+  string name = 4;
+  map<string, string> chart_labels = 5;
+  MemoryMode memory_mode = 6;
+  // in seconds
+  uint32 update_every_interval = 7;
+  string config_hash = 8;
+  aclk_lib.v1.ACLKMessagePosition position = 9;
+}
+
+enum MemoryMode {
+  NONE = 0;
+  RAM = 1;
+  MAP = 2;
+  SAVE = 3;
+  ALLOC = 4;
+  DB_ENGINE = 5;
+}
diff --git a/aclk/aclk-schemas/proto/chart/v1/stream.proto b/aclk/aclk-schemas/proto/chart/v1/stream.proto
new file mode 100644
index 00000000..9473538f
--- /dev/null
+++ b/aclk/aclk-schemas/proto/chart/v1/stream.proto
@@ -0,0 +1,86 @@
+syntax = "proto3";
+
+package chart.v1;
+
+import "google/protobuf/timestamp.proto";
+
+import "proto/chart/v1/instance.proto";
+import "proto/chart/v1/dimension.proto";
+
+option go_package = "chart/stream/v1;chartstream";
+
+// StreamChartsAndDimensions is a Command produced by the Cloud, consumed by the Agent.
+//
+// It instructs the Agent to start sending ChartsAndDimensionsUpdated messages for a NodeInstance
+// after the last sequence_id that the Cloud has successfully ingested.
+message StreamChartsAndDimensions {
+  // claim_id, node_id pair is used to identify the Node Instance
+  string claim_id = 1;
+  string node_id = 2;
+
+  // sequence_id last verified sequence sent by the Agent
+  uint64 sequence_id = 3;
+  // batch_id identifies the stream_id and gets incremented every time the Cloud sends a new StreamChartsAndDimensions command
+  uint64 batch_id = 4;
+  // seq_id_created_at autogenerated timestamp in Agent's DB upon sequence_id creation
+  google.protobuf.Timestamp seq_id_created_at = 5;
+}
+
+
+// ChartsAndDimensionsAck is an Event produced by the Cloud, consumed by the Agent.
+//
+// This Event is an acknowledgment from the Cloud side that Chart messages up to a specific last_sequence_id
+// have been successfully ingested, and could be potentially deleted from the Agent's DB.
+message ChartsAndDimensionsAck {
+  string claim_id = 1;
+  string node_id = 2;
+  // the last verified stored message's seq_id
+  uint64 last_sequence_id = 3;
+}
+
+// ResetChartMessages is a Command produced by the Agent, consumed by the Cloud.
+//
+// This Command instructs the Cloud to clear its Chart state for a specific NodeInstance and re-sync
+// because of a ResetReason.
+message ResetChartMessages {
+  // claim_id, node_id pair is used to identify the Node Instance
+  string claim_id = 1;
+  string node_id = 2;
+
+  ResetReason reason = 3;
+}
+
+enum ResetReason {
+  DB_EMPTY = 0;
+  SEQ_ID_NOT_EXISTS = 1;
+  TIMESTAMP_MISMATCH = 2;
+}
+
+// ChartsAndDimensionsUpdated is a wrapper Event (`fat` message) produced by the Agent, consumed by the Cloud.
+//
+// It potentially includes a collection of ChartInstanceUpdated messages and|or a collection of ChartDimensionUpdated messages.
+message ChartsAndDimensionsUpdated {
+  repeated chart.v1.ChartInstanceUpdated charts = 1;
+  repeated chart.v1.ChartDimensionUpdated dimensions = 2;
+  uint64 batch_id = 3;
+}
+
+// RetentionUpdated includes the available retentions (in seconds) of the dimensions - of a specific node instance and memory-mode -
+// on a per update_every level.
+// This message is sent over upon Agent Database rotation events to inform the Cloud in total about the newly updated data retentions
+// of a node instance's dimensions.
+message RetentionUpdated {
+  // claim_id, node_id pair is used to identify the Node Instance
+  string claim_id = 1;
+  string node_id = 2;
+  // the memory_mode used by the node instance's chart instances
+  chart.v1.MemoryMode memory_mode = 3;
+  // this mapping identifies the newly updated available retention (in seconds) of the node instance's dimensions
+  // the keys are the update_every categories of various dimensions (1, 2, 4, 10 etc.),
+  // and the values are the available retention (in seconds) of each dimension belonging to the update_every category
+  // denoted by the key
+  map<uint32, uint32> interval_durations = 4;
+  // the timestamp when the db rotation event took place. Can be used in conjunction with the interval_durations
+  // to compute the beginning of each `updated_every` group's retention
+  google.protobuf.Timestamp rotation_timestamp = 5;
+}
diff --git a/aclk/aclk-schemas/proto/context/v1/context.proto b/aclk/aclk-schemas/proto/context/v1/context.proto
new file mode 100644
index 00000000..eb771f8e
--- /dev/null
+++ b/aclk/aclk-schemas/proto/context/v1/context.proto
@@ -0,0 +1,57 @@
+syntax = "proto3";
+
+package context.v1;
+
+option go_package = "context/v1;context";
+
+// ContextsUpdated is an Event produced by the Agent, consumed by the Cloud.
+//
+// it contains a collection of ContextUpdated messages for a specific NodeInstance.
+message ContextsUpdated {
+    // contexUpdates contains the collection of context updates
+    repeated ContextUpdated contextUpdates = 1;
+    // claim_id, node_id pair identifies the node instance
+    string claim_id = 2;
+    string node_id = 3;
+    // version_hash is the contexts version_hash result the cloud should
+    // get after applying this message updates.
+    uint64 version_hash = 4;
+    // it's and always increasing number to compare
+    // which version_hash is more recent between multiple
+    // ContextsUpdated messages. Bigger means more recent.
+    uint64 created_at = 5;
+}
+
+// ContextUpdated contains context data.
+message ContextUpdated {
+    // context id
+    string id = 1;
+    // context version is an epoch in seconds.
+    uint64 version = 2;
+    // first_entry, last_entry are epochs in seconds
+    uint64 first_entry = 3;
+    uint64 last_entry = 4;
+    // deleted flag is used to signal a context deletion
+    bool deleted = 5;
+    // context configuration fields
+    string title = 6;
+    uint64 priority = 7;
+    string chart_type = 8;
+    string units = 9;
+    string family = 10;
+}
+
+// ContextsSnapshot is an Event produced by the Agent, consumed by the Cloud.
+//
+// it contains a snapshot of the existing contexts on the Agent.
+// snapshot version and context versions are epochs in seconds so we can
+// identify if a context version was generated after a specific snapshot.
+message ContextsSnapshot {
+    // contexts contains the collection of existing contexts
+    repeated ContextUpdated contexts = 1;
+    // claim_id, node_id pair identifies the node instance
+    string claim_id = 2;
+    string node_id = 3;
+    // version is an epoch in seconds
+    uint64 version = 4;
+}
diff --git a/aclk/aclk-schemas/proto/context/v1/stream.proto b/aclk/aclk-schemas/proto/context/v1/stream.proto
new file mode 100644
index 00000000..a6e7e3ab
--- /dev/null
+++ b/aclk/aclk-schemas/proto/context/v1/stream.proto
@@ -0,0 +1,34 @@
+syntax = "proto3";
+
+package context.v1;
+
+option go_package = "context/v1;context";
+
+// ContextsCheckpoint is a Command produced by the Cloud, consumed by the Agent.
+//
+// It informs the Agent the contexts' version_hash that the cloud has for a specific NodeInstance.
+message ContextsCheckpoint {
+    // claim_id, node_id pair is used to identify the NodeInstance.
+    string claim_id = 1;
+    string node_id = 2;
+    // version_hash tells the Agent the current version hash for the contexts received
+    // if the version hash calculated by the Agent is different, Agent will request
+    // to re-sync all contexts.
+    uint64 version_hash= 3;
+}
+
+// StopStreamingContexts is a Command produced by the Cloud, consumed by the Agent.
+//
+// It instructs the Agent to stop sending ContextsUpdated messages for a NodeInstance
+// due to a reason.
+message StopStreamingContexts {
+    // claim_id, node_id pair is used to identify the node instance
+    string claim_id = 1;
+    string node_id = 2;
+    
+    StopStreamingContextsReason reason = 3;
+}
+
+enum StopStreamingContextsReason {
+  RATE_LIMIT_EXCEEDED = 0;
+}
diff --git a/aclk/aclk-schemas/proto/nodeinstance/connection/v1/connection.proto b/aclk/aclk-schemas/proto/nodeinstance/connection/v1/connection.proto
new file mode 100644
index 00000000..f0c02461
--- /dev/null
+++ b/aclk/aclk-schemas/proto/nodeinstance/connection/v1/connection.proto
@@ -0,0 +1,37 @@
+syntax = "proto3";
+option go_package = "nodeinstance/connection/v1;nodeinstanceconnection";
+
+package nodeinstance.v1;
+
+import "google/protobuf/timestamp.proto";
+import "proto/aclk/v1/lib.proto";
+
+message UpdateNodeInstanceConnection {
+    string claim_id = 1;
+    string node_id = 2;
+
+    // liveness whether node data are actively streamed to the agent.
+    bool liveness = 3;
+
+    // queryable whether the agent has data about the node.
+    bool queryable = 4;
+
+    int64 session_id = 5;
+
+    google.protobuf.Timestamp updated_at = 6;
+
+    // mqtt_broker_addr shard to use for reaching the agent
+    // cloud injects this information.
+    string mqtt_broker_addr = 7;
+
+    // vmq_instance_id broker shard to use for reaching the agent
+    // cloud injects this information.
+    int32 vmq_instance_id = 8;
+
+    // hops is the number of streaming hops between collection of node data
+    // and the claimed agent. Zero if no streaming is involved.
+    int32 hops = 9;
+
+    // capabilities of node instance NOT the NODE or agent!!!
+    repeated aclk_lib.v1.Capability capabilities = 10;
+}
diff --git a/aclk/aclk-schemas/proto/nodeinstance/create/v1/creation.proto b/aclk/aclk-schemas/proto/nodeinstance/create/v1/creation.proto
new file mode 100644
index 00000000..92233715
--- /dev/null
+++ b/aclk/aclk-schemas/proto/nodeinstance/create/v1/creation.proto
@@ -0,0 +1,32 @@
+syntax = "proto3";
+option go_package = "node_instance/creation/v1;node_instancecreation";
+
+package nodeinstance.create.v1;
+
+message CreateNodeInstance {
+    // Claim ID of the Agent the Node Instance belongs to.
+    // Eventually, the NodeInstance will be identified by the compilation of
+    // this claim_id and NodeID returned by `CreateNodeInstanceResult`
+    string claim_id = 1;
+    // Machine GUID of the Machine the request comes from
+    // Used to look for an existing NodeID in the space claim_id belongs to
+    string machine_guid = 2;
+    string hostname = 3;
+
+    // vmq_instance_id broker shard to use for reaching the agent
+    // cloud injects this information.
+    int32 vmq_instance_id = 4;
+    // mqtt_broker_addr shard to use for reaching the agent
+    // cloud injects this information.
+    string mqtt_broker_addr = 5;
+
+    // hops is the number of streaming hops between collection of node data
+    //   and the claimed agent. Zero if no streaming is involved.
+    int32 hops = 6;
+}
+
+message CreateNodeInstanceResult {
+    string node_id = 1;
+    string machine_guid = 2;
+}
+
diff --git a/aclk/aclk-schemas/proto/nodeinstance/info/v1/info.proto b/aclk/aclk-schemas/proto/nodeinstance/info/v1/info.proto
new file mode 100644
index 00000000..7aa9d044
--- /dev/null
+++ b/aclk/aclk-schemas/proto/nodeinstance/info/v1/info.proto
@@ -0,0 +1,148 @@
+syntax = "proto3";
+option go_package = "node_instance/info/v1;nodeinstanceinfo";
+
+package nodeinstance.info.v1;
+
+import "google/protobuf/timestamp.proto";
+import "proto/aclk/v1/lib.proto";
+
+// UpdateNodeInfo (Command)
+//
+// pulsar topic: `UpdateNodeInfo` (sharded)
+//
+// key: `claim_id,node_id`
+//
+// Publishers: `netdata/agent`
+// Subscribers: `cloud-node-mqtt-output-service`
+//
+// When:
+//  On nodeinstance connect
+//
+message UpdateNodeInfo {
+  string node_id = 7;
+
+  string claim_id = 1;
+
+  NodeInfo data = 2;
+  // to be obsoleted in future
+  // all new fields should go into node_info
+  // or node_instance_info respectively
+
+  google.protobuf.Timestamp updated_at = 3;
+
+  int64 session_id = 4;
+
+  string machine_guid = 5;
+
+  bool child = 6;
+
+  MachineLearningInfo ml_info = 8;
+  // to be obsoleted in far future
+
+  NodeInfo2 node_info = 9;
+  // node_info shows data about actual node
+  // for example feature (ml) for this
+  // node (child) might be available/enabled on the node (child) directly
+  // but not available trough the parent (node_instance)
+
+  NodeInstanceInfo node_instance_info = 10;
+  // info specific to the node_instance for this node available trough agent
+  // who sends this message.
+  // e.g. machine learning is enabled for this node and processing is done
+  // by the actual agent (parent). (child itself might or might not be
+  // ml ml_capable by itself (see node_info))
+}
+
+message NodeInfo2 {
+  repeated  aclk_lib.v1.Capability capabilities = 1;
+}
+
+message NodeInstanceInfo {
+  repeated  aclk_lib.v1.Capability capabilities = 1;
+}
+
+// NodeInfo describes the metadata of a node
+message NodeInfo {
+  string name = 1;
+
+  string os = 2;
+  string os_name = 3;
+  string os_version = 4;
+
+  string kernel_name = 5;
+  string kernel_version = 6;
+
+  string architecture = 7;
+
+  // number of cpu cores in the node
+  uint32 cpus = 8;
+
+  // human readable (value + unit) frequency of cpu
+  string cpu_frequency = 9;
+
+  // human readable (value + unit) size of node's memory
+  string memory = 10;
+
+  // human readable (value + unit) size of all (sum) node's disks
+  string disk_space = 11;
+
+  // version of the netdata agent
+  string version = 12;
+
+  // release channel of netdata agent (example: nightly)
+  string release_channel = 13;
+
+  string timezone = 14;
+
+  // virtualization_type example: kvm (optional)
+  string virtualization_type = 15;
+
+  // container_type example: docker (optional)
+  string container_type = 16;
+
+  string custom_info = 17;
+
+  // [Obsolete] repeated string services = 18;
+  reserved 18;
+
+  string machine_guid = 19;
+
+  // [Obsolete] repeated MirroredHostStatus mirrored_hosts_status = 20;
+  reserved 20;
+
+  map<string, string> host_labels = 21;
+
+  MachineLearningInfo ml_info = 22;
+  
+  // [Obsolete] repeated string collectors = 23;
+  reserved 23;
+}
+
+message MachineLearningInfo {
+  // have ML capability
+  bool ml_capable = 1;
+
+  // runs ML functionality
+  bool ml_enabled = 2;
+}
+
+// UpdateNodeCollectors (Command)
+//
+// key: `claim_id,node_id`
+//
+// Publishers: `netdata/agent`
+//
+// When:
+//  On nodeinstance connect (after agent settles) and on detection of change of collectors
+//
+
+message CollectorInfo {
+  string module = 1;
+  string plugin = 2;
+}
+
+message UpdateNodeCollectors {
+  string claim_id = 1;
+  string node_id = 2;
+  repeated CollectorInfo collectors = 3;
+}