Adding upstream version 5.3.1.upstream/5.3.1upstream

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

20 files changed, 175 insertions, 0 deletions

diff --git a/modules/etcd/.packaging/centos/7/pre-test.sh b/modules/etcd/.packaging/centos/7/pre-test.sh
new file mode 100755
index 0000000..4df79d9
--- /dev/null
+++ b/modules/etcd/.packaging/centos/7/pre-test.sh
@@ -0,0 +1 @@
+luarocks install etcd --from=https://mah0x211.github.io/rocks/
diff --git a/modules/etcd/.packaging/centos/7/rundeps b/modules/etcd/.packaging/centos/7/rundeps
new file mode 100644
index 0000000..795a3c4
--- /dev/null
+++ b/modules/etcd/.packaging/centos/7/rundeps
@@ -0,0 +1,6 @@
+openssl-devel
+lua-devel
+luarocks
+git
+gcc
+make
diff --git a/modules/etcd/.packaging/centos/8/NOTSUPPORTED b/modules/etcd/.packaging/centos/8/NOTSUPPORTED
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/modules/etcd/.packaging/centos/8/NOTSUPPORTED
diff --git a/modules/etcd/.packaging/debian/10/pre-test.sh b/modules/etcd/.packaging/debian/10/pre-test.sh
new file mode 100755
index 0000000..20073dc
--- /dev/null
+++ b/modules/etcd/.packaging/debian/10/pre-test.sh
@@ -0,0 +1 @@
+luarocks --lua-version 5.1 install etcd --from=https://mah0x211.github.io/rocks/
diff --git a/modules/etcd/.packaging/debian/10/rundeps b/modules/etcd/.packaging/debian/10/rundeps
new file mode 100644
index 0000000..02d3fcf
--- /dev/null
+++ b/modules/etcd/.packaging/debian/10/rundeps
@@ -0,0 +1,4 @@
+libssl-dev
+luarocks
+git
+make
diff --git a/modules/etcd/.packaging/debian/9/pre-test.sh b/modules/etcd/.packaging/debian/9/pre-test.sh
new file mode 100755
index 0000000..4df79d9
--- /dev/null
+++ b/modules/etcd/.packaging/debian/9/pre-test.sh
@@ -0,0 +1 @@
+luarocks install etcd --from=https://mah0x211.github.io/rocks/
diff --git a/modules/etcd/.packaging/debian/9/rundeps b/modules/etcd/.packaging/debian/9/rundeps
new file mode 100644
index 0000000..02d3fcf
--- /dev/null
+++ b/modules/etcd/.packaging/debian/9/rundeps
@@ -0,0 +1,4 @@
+libssl-dev
+luarocks
+git
+make
diff --git a/modules/etcd/.packaging/fedora/31/NOTSUPPORTED b/modules/etcd/.packaging/fedora/31/NOTSUPPORTED
new file mode 100644
index 0000000..b912289
--- /dev/null
+++ b/modules/etcd/.packaging/fedora/31/NOTSUPPORTED
@@ -0,0 +1,16 @@
+Error installing etcd using luarocks:
+
+
+
+Missing dependencies for process 1.9.0-1:
+   luarocks-fetch-gitrec >= 0.2 (not installed)
+
+process 1.9.0-1 depends on luarocks-fetch-gitrec >= 0.2 (not installed)
+Installing https://luarocks.org/luarocks-fetch-gitrec-0.2-1.src.rock
+
+No existing manifest. Attempting to rebuild...
+luarocks-fetch-gitrec 0.2-1 is now installed in /root/.luarocks (license: MIT)
+
+
+Error: Unknown protocol gitrec
+
diff --git a/modules/etcd/.packaging/fedora/32/NOTSUPPORTED b/modules/etcd/.packaging/fedora/32/NOTSUPPORTED
new file mode 100644
index 0000000..b912289
--- /dev/null
+++ b/modules/etcd/.packaging/fedora/32/NOTSUPPORTED
@@ -0,0 +1,16 @@
+Error installing etcd using luarocks:
+
+
+
+Missing dependencies for process 1.9.0-1:
+   luarocks-fetch-gitrec >= 0.2 (not installed)
+
+process 1.9.0-1 depends on luarocks-fetch-gitrec >= 0.2 (not installed)
+Installing https://luarocks.org/luarocks-fetch-gitrec-0.2-1.src.rock
+
+No existing manifest. Attempting to rebuild...
+luarocks-fetch-gitrec 0.2-1 is now installed in /root/.luarocks (license: MIT)
+
+
+Error: Unknown protocol gitrec
+
diff --git a/modules/etcd/.packaging/leap/15.2/pre-test.sh b/modules/etcd/.packaging/leap/15.2/pre-test.sh
new file mode 100755
index 0000000..20073dc
--- /dev/null
+++ b/modules/etcd/.packaging/leap/15.2/pre-test.sh
@@ -0,0 +1 @@
+luarocks --lua-version 5.1 install etcd --from=https://mah0x211.github.io/rocks/
diff --git a/modules/etcd/.packaging/leap/15.2/rundeps b/modules/etcd/.packaging/leap/15.2/rundeps
new file mode 100644
index 0000000..e8df59b
--- /dev/null
+++ b/modules/etcd/.packaging/leap/15.2/rundeps
@@ -0,0 +1,6 @@
+libopenssl-devel
+lua51-devel
+lua51-luarocks
+git
+gcc
+make
diff --git a/modules/etcd/.packaging/test.config b/modules/etcd/.packaging/test.config
new file mode 100644
index 0000000..1cc7e5a
--- /dev/null
+++ b/modules/etcd/.packaging/test.config
@@ -0,0 +1,4 @@
+-- SPDX-License-Identifier: GPL-3.0-or-later
+modules.load('etcd')
+assert(etcd)
+quit()
diff --git a/modules/etcd/.packaging/ubuntu/16.04/pre-test.sh b/modules/etcd/.packaging/ubuntu/16.04/pre-test.sh
new file mode 100755
index 0000000..4df79d9
--- /dev/null
+++ b/modules/etcd/.packaging/ubuntu/16.04/pre-test.sh
@@ -0,0 +1 @@
+luarocks install etcd --from=https://mah0x211.github.io/rocks/
diff --git a/modules/etcd/.packaging/ubuntu/16.04/rundeps b/modules/etcd/.packaging/ubuntu/16.04/rundeps
new file mode 100644
index 0000000..a355a9f
--- /dev/null
+++ b/modules/etcd/.packaging/ubuntu/16.04/rundeps
@@ -0,0 +1,3 @@
+libssl-dev
+luarocks
+git
diff --git a/modules/etcd/.packaging/ubuntu/18.04/pre-test.sh b/modules/etcd/.packaging/ubuntu/18.04/pre-test.sh
new file mode 100755
index 0000000..4df79d9
--- /dev/null
+++ b/modules/etcd/.packaging/ubuntu/18.04/pre-test.sh
@@ -0,0 +1 @@
+luarocks install etcd --from=https://mah0x211.github.io/rocks/
diff --git a/modules/etcd/.packaging/ubuntu/18.04/rundeps b/modules/etcd/.packaging/ubuntu/18.04/rundeps
new file mode 100644
index 0000000..a355a9f
--- /dev/null
+++ b/modules/etcd/.packaging/ubuntu/18.04/rundeps
@@ -0,0 +1,3 @@
+libssl-dev
+luarocks
+git
diff --git a/modules/etcd/.packaging/ubuntu/20.04/pre-test.sh b/modules/etcd/.packaging/ubuntu/20.04/pre-test.sh
new file mode 100755
index 0000000..20073dc
--- /dev/null
+++ b/modules/etcd/.packaging/ubuntu/20.04/pre-test.sh
@@ -0,0 +1 @@
+luarocks --lua-version 5.1 install etcd --from=https://mah0x211.github.io/rocks/
diff --git a/modules/etcd/.packaging/ubuntu/20.04/rundeps b/modules/etcd/.packaging/ubuntu/20.04/rundeps
new file mode 100644
index 0000000..02d3fcf
--- /dev/null
+++ b/modules/etcd/.packaging/ubuntu/20.04/rundeps
@@ -0,0 +1,4 @@
+libssl-dev
+luarocks
+git
+make
diff --git a/modules/etcd/README.rst b/modules/etcd/README.rst
new file mode 100644
index 0000000..567151d
--- /dev/null
+++ b/modules/etcd/README.rst
@@ -0,0 +1,46 @@
+.. SPDX-License-Identifier: GPL-3.0-or-later
+
+.. _mod-etcd:
+
+Etcd support
+------------
+
+The `etcd` module connects to `etcd <https://etcd.io/>`_ peers and watches
+for configuration changes. By default, the module watches the subtree under
+``/knot-resolver`` directory, but you can change this in the
+`etcd library configuration <https://github.com/mah0x211/lua-etcd#cli-err--etcdnew-optiontable->`_.
+
+The subtree structure corresponds to the configuration variables in the declarative style.
+
+.. code-block:: bash
+
+	$ etcdctl set /knot-resolvevr/net/127.0.0.1 53
+	$ etcdctl set /knot-resolver/cache/size 10000000
+
+Configures all listening nodes to following configuration:
+
+.. code-block:: lua
+
+	net = { '127.0.0.1' }
+	cache.size = 10000000
+
+Example configuration
+^^^^^^^^^^^^^^^^^^^^^
+
+.. code-block:: lua
+
+	modules.load('etcd')
+        etcd.config({
+                prefix = '/knot-resolver',
+                peer = 'http://127.0.0.1:7001'
+        })
+
+.. warning:: Work in progress!
+
+Dependencies
+^^^^^^^^^^^^
+
+* `lua-etcd <https://github.com/mah0x211/lua-etcd>`_ library available in LuaRocks
+
+    ``$ luarocks --lua-version 5.1 install etcd --from=https://mah0x211.github.io/rocks/``
+
diff --git a/modules/etcd/etcd.lua b/modules/etcd/etcd.lua
new file mode 100644
index 0000000..ab58024
--- /dev/null
+++ b/modules/etcd/etcd.lua
@@ -0,0 +1,56 @@
+--- @module etcd
+-- SPDX-License-Identifier: GPL-3.0-or-later
+local etcd = {}
+
+-- @function update subtree configuration
+local function update_subtree(tree)
+	if not tree then return end
+	for _, k in pairs(tree) do
+		if k.dir then
+			update_subtree(k.nodes)
+		else
+			local key,opt = k.key:gmatch('([^/]+)/([^/]+)$')()
+			if _G[key][opt] ~= k.value then
+				_G[key][opt] = k.value
+			end
+		end
+	end
+end
+
+-- @function reload whole configuration
+function etcd.reload()
+	local res, err = etcd.cli:readdir('/', true)
+	if err then
+		error(err)
+	end
+	update_subtree(res.body.node.nodes)
+end
+
+function etcd.init()
+	etcd.Etcd = require('etcd.luasocket')
+	etcd.defaults = { prefix = '/knot-resolver' }
+end
+
+function etcd.deinit()
+	if etcd.ev then event.cancel(etcd.ev) end
+end
+
+function etcd.config(conf)
+	local options = etcd.defaults
+	if type(conf) == 'table' then
+		for k,v in pairs(conf) do options[k] = v end
+	end
+	-- create connection
+	local cli, err = etcd.Etcd.new(options)
+	if err then
+		error(err)
+	end
+	etcd.cli = cli
+	-- schedule recurrent polling
+	-- @todo: the etcd has watch() API, but this requires
+	--        coroutines on socket operations
+	if etcd.ev then event.cancel(etcd.ev) end
+	etcd.ev = event.recurrent(5 * sec, etcd.reload)
+end
+
+return etcd