Adding upstream version 18.2.2.upstream/18.2.2

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

1 files changed, 613 insertions, 0 deletions

diff --git a/src/pybind/mgr/restful/module.py b/src/pybind/mgr/restful/module.py
new file mode 100644
index 000000000..cb8391ecd
--- /dev/null
+++ b/src/pybind/mgr/restful/module.py
@@ -0,0 +1,613 @@
+"""
+A RESTful API for Ceph
+"""
+
+import os
+import json
+import time
+import errno
+import inspect
+import tempfile
+import threading
+import traceback
+import socket
+import fcntl
+
+from . import common
+from . import context
+
+from uuid import uuid4
+from pecan import jsonify, make_app
+from OpenSSL import crypto
+from pecan.rest import RestController
+from werkzeug.serving import make_server, make_ssl_devcert
+
+from .hooks import ErrorHook
+from mgr_module import MgrModule, CommandResult, NotifyType
+from mgr_util import build_url
+
+
+class CannotServe(Exception):
+    pass
+
+
+class CommandsRequest(object):
+    """
+    This class handles parallel as well as sequential execution of
+    commands. The class accept a list of iterables that should be
+    executed sequentially. Each iterable can contain several commands
+    that can be executed in parallel.
+
+    Example:
+    [[c1,c2],[c3,c4]]
+     - run c1 and c2 in parallel
+     - wait for them to finish
+     - run c3 and c4 in parallel
+     - wait for them to finish
+    """
+
+
+    def __init__(self, commands_arrays):
+        self.id = str(id(self))
+
+        # Filter out empty sub-requests
+        commands_arrays = [x for x in commands_arrays
+                           if len(x) != 0]
+
+        self.running = []
+        self.waiting = commands_arrays[1:]
+        self.finished = []
+        self.failed = []
+
+        self.lock = threading.RLock()
+        if not len(commands_arrays):
+            # Nothing to run
+            return
+
+        # Process first iteration of commands_arrays in parallel
+        results = self.run(commands_arrays[0])
+
+        self.running.extend(results)
+
+
+    def run(self, commands):
+        """
+        A static method that will execute the given list of commands in
+        parallel and will return the list of command results.
+        """
+
+        # Gather the results (in parallel)
+        results = []
+        for index, command in enumerate(commands):
+            tag = '%s:%s:%d' % (__name__, self.id, index)
+
+            # Store the result
+            result = CommandResult(tag)
+            result.command = common.humanify_command(command)
+            results.append(result)
+
+            # Run the command
+            context.instance.send_command(result, 'mon', '', json.dumps(command), tag)
+
+        return results
+
+
+    def next(self):
+        with self.lock:
+            if not self.waiting:
+                # Nothing to run
+                return
+
+            # Run a next iteration of commands
+            commands = self.waiting[0]
+            self.waiting = self.waiting[1:]
+
+            self.running.extend(self.run(commands))
+
+
+    def finish(self, tag):
+        with self.lock:
+            for index in range(len(self.running)):
+                if self.running[index].tag == tag:
+                    if self.running[index].r == 0:
+                        self.finished.append(self.running.pop(index))
+                    else:
+                        self.failed.append(self.running.pop(index))
+                    return True
+
+            # No such tag found
+            return False
+
+
+    def is_running(self, tag):
+        for result in self.running:
+            if result.tag == tag:
+                return True
+        return False
+
+
+    def is_ready(self):
+        with self.lock:
+            return not self.running and self.waiting
+
+
+    def is_waiting(self):
+        return bool(self.waiting)
+
+
+    def is_finished(self):
+        with self.lock:
+            return not self.running and not self.waiting
+
+
+    def has_failed(self):
+        return bool(self.failed)
+
+
+    def get_state(self):
+        with self.lock:
+            if not self.is_finished():
+                return "pending"
+
+            if self.has_failed():
+                return "failed"
+
+            return "success"
+
+
+    def __json__(self):
+        return {
+            'id': self.id,
+            'running': [
+                {
+                    'command': x.command,
+                    'outs': x.outs,
+                    'outb': x.outb,
+                } for x in self.running
+            ],
+            'finished': [
+                {
+                    'command': x.command,
+                    'outs': x.outs,
+                    'outb': x.outb,
+                } for x in self.finished
+            ],
+            'waiting': [
+                [common.humanify_command(y) for y in x]
+                for x in self.waiting
+            ],
+            'failed': [
+                {
+                    'command': x.command,
+                    'outs': x.outs,
+                    'outb': x.outb,
+                } for x in self.failed
+            ],
+            'is_waiting': self.is_waiting(),
+            'is_finished': self.is_finished(),
+            'has_failed': self.has_failed(),
+            'state': self.get_state(),
+        }
+
+
+
+class Module(MgrModule):
+    MODULE_OPTIONS = [
+        {'name': 'server_addr'},
+        {'name': 'server_port'},
+        {'name': 'key_file'},
+        {'name': 'enable_auth', 'type': 'bool', 'default': True},
+    ]
+
+    COMMANDS = [
+        {
+            "cmd": "restful create-key name=key_name,type=CephString",
+            "desc": "Create an API key with this name",
+            "perm": "rw"
+        },
+        {
+            "cmd": "restful delete-key name=key_name,type=CephString",
+            "desc": "Delete an API key with this name",
+            "perm": "rw"
+        },
+        {
+            "cmd": "restful list-keys",
+            "desc": "List all API keys",
+            "perm": "r"
+        },
+        {
+            "cmd": "restful create-self-signed-cert",
+            "desc": "Create localized self signed certificate",
+            "perm": "rw"
+        },
+        {
+            "cmd": "restful restart",
+            "desc": "Restart API server",
+            "perm": "rw"
+        },
+    ]
+
+    NOTIFY_TYPES = [NotifyType.command]
+
+    def __init__(self, *args, **kwargs):
+        super(Module, self).__init__(*args, **kwargs)
+        context.instance = self
+
+        self.requests = []
+        self.requests_lock = threading.RLock()
+
+        self.keys = {}
+        self.enable_auth = True
+
+        self.server = None
+
+        self.stop_server = False
+        self.serve_event = threading.Event()
+
+
+    def serve(self):
+        self.log.debug('serve enter')
+        while not self.stop_server:
+            try:
+                self._serve()
+                self.server.socket.close()
+            except CannotServe as cs:
+                self.log.warning("server not running: %s", cs)
+            except:
+                self.log.error(str(traceback.format_exc()))
+
+            # Wait and clear the threading event
+            self.serve_event.wait()
+            self.serve_event.clear()
+        self.log.debug('serve exit')
+
+    def refresh_keys(self):
+        self.keys = {}
+        rawkeys = self.get_store_prefix('keys/') or {}
+        for k, v in rawkeys.items():
+            self.keys[k[5:]] = v  # strip of keys/ prefix
+
+    def _serve(self):
+        # Load stored authentication keys
+        self.refresh_keys()
+
+        jsonify._instance = jsonify.GenericJSON(
+            sort_keys=True,
+            indent=4,
+            separators=(',', ': '),
+        )
+
+        server_addr = self.get_localized_module_option('server_addr', '::')
+        if server_addr is None:
+            raise CannotServe('no server_addr configured; try "ceph config-key set mgr/restful/server_addr <ip>"')
+
+        server_port = int(self.get_localized_module_option('server_port', '8003'))
+        self.log.info('server_addr: %s server_port: %d',
+                      server_addr, server_port)
+
+        cert = self.get_localized_store("crt")
+        if cert is not None:
+            cert_tmp = tempfile.NamedTemporaryFile()
+            cert_tmp.write(cert.encode('utf-8'))
+            cert_tmp.flush()
+            cert_fname = cert_tmp.name
+        else:
+            cert_fname = self.get_localized_store('crt_file')
+
+        pkey = self.get_localized_store("key")
+        if pkey is not None:
+            pkey_tmp = tempfile.NamedTemporaryFile()
+            pkey_tmp.write(pkey.encode('utf-8'))
+            pkey_tmp.flush()
+            pkey_fname = pkey_tmp.name
+        else:
+            pkey_fname = self.get_localized_module_option('key_file')
+
+        self.enable_auth = self.get_localized_module_option('enable_auth', True)
+        
+        if not cert_fname or not pkey_fname:
+            raise CannotServe('no certificate configured')
+        if not os.path.isfile(cert_fname):
+            raise CannotServe('certificate %s does not exist' % cert_fname)
+        if not os.path.isfile(pkey_fname):
+            raise CannotServe('private key %s does not exist' % pkey_fname)
+
+        # Publish the URI that others may use to access the service we're
+        # about to start serving
+        addr = self.get_mgr_ip() if server_addr == "::" else server_addr
+        self.set_uri(build_url(scheme='https', host=addr, port=server_port, path='/'))
+
+        # Create the HTTPS werkzeug server serving pecan app
+        self.server = make_server(
+            host=server_addr,
+            port=server_port,
+            app=make_app(
+                root='restful.api.Root',
+                hooks = [ErrorHook()],  # use a callable if pecan >= 0.3.2
+            ),
+            ssl_context=(cert_fname, pkey_fname),
+        )
+        sock_fd_flag = fcntl.fcntl(self.server.socket.fileno(), fcntl.F_GETFD)
+        if not (sock_fd_flag & fcntl.FD_CLOEXEC):
+            self.log.debug("set server socket close-on-exec")
+            fcntl.fcntl(self.server.socket.fileno(), fcntl.F_SETFD, sock_fd_flag | fcntl.FD_CLOEXEC)
+        if self.stop_server:
+            self.log.debug('made server, but stop flag set')
+        else:
+            self.log.debug('made server, serving forever')
+            self.server.serve_forever()
+
+
+    def shutdown(self):
+        self.log.debug('shutdown enter')
+        try:
+            self.stop_server = True
+            if self.server:
+                self.log.debug('calling server.shutdown')
+                self.server.shutdown()
+                self.log.debug('called server.shutdown')
+            self.serve_event.set()
+        except:
+            self.log.error(str(traceback.format_exc()))
+            raise
+        self.log.debug('shutdown exit')
+
+
+    def restart(self):
+        try:
+            if self.server:
+                self.server.shutdown()
+            self.serve_event.set()
+        except:
+            self.log.error(str(traceback.format_exc()))
+
+
+    def notify(self, notify_type: NotifyType, tag: str):
+        try:
+            self._notify(notify_type, tag)
+        except:
+            self.log.error(str(traceback.format_exc()))
+
+
+    def _notify(self, notify_type: NotifyType, tag):
+        if notify_type != NotifyType.command:
+            self.log.debug("Unhandled notification type '%s'", notify_type)
+            return
+        # we can safely skip all the sequential commands
+        if tag == 'seq':
+            return
+        try:
+            with self.requests_lock:
+                request = next(x for x in self.requests if x.is_running(tag))
+            request.finish(tag)
+            if request.is_ready():
+                request.next()
+        except StopIteration:
+            # the command was not issued by me
+            pass
+
+    def config_notify(self):
+        self.enable_auth = self.get_localized_module_option('enable_auth', True)
+
+
+    def create_self_signed_cert(self):
+        # create a key pair
+        pkey = crypto.PKey()
+        pkey.generate_key(crypto.TYPE_RSA, 2048)
+
+        # create a self-signed cert
+        cert = crypto.X509()
+        cert.get_subject().O = "IT"
+        cert.get_subject().CN = "ceph-restful"
+        cert.set_serial_number(int(uuid4()))
+        cert.gmtime_adj_notBefore(0)
+        cert.gmtime_adj_notAfter(10*365*24*60*60)
+        cert.set_issuer(cert.get_subject())
+        cert.set_pubkey(pkey)
+        cert.sign(pkey, 'sha512')
+
+        return (
+            crypto.dump_certificate(crypto.FILETYPE_PEM, cert),
+            crypto.dump_privatekey(crypto.FILETYPE_PEM, pkey)
+        )
+
+
+    def handle_command(self, inbuf, command):
+        self.log.warning("Handling command: '%s'" % str(command))
+        if command['prefix'] == "restful create-key":
+            if command['key_name'] in self.keys:
+                return 0, self.keys[command['key_name']], ""
+
+            else:
+                key = str(uuid4())
+                self.keys[command['key_name']] = key
+                self.set_store('keys/' + command['key_name'], key)
+
+            return (
+                0,
+                self.keys[command['key_name']],
+                "",
+            )
+
+        elif command['prefix'] == "restful delete-key":
+            if command['key_name'] in self.keys:
+                del self.keys[command['key_name']]
+                self.set_store('keys/' + command['key_name'], None)
+
+            return (
+                0,
+                "",
+                "",
+            )
+
+        elif command['prefix'] == "restful list-keys":
+            self.refresh_keys()
+            return (
+                0,
+                json.dumps(self.keys, indent=4, sort_keys=True),
+                "",
+            )
+
+        elif command['prefix'] == "restful create-self-signed-cert":
+            cert, pkey = self.create_self_signed_cert()
+            self.set_store(self.get_mgr_id() + '/crt', cert.decode('utf-8'))
+            self.set_store(self.get_mgr_id() + '/key', pkey.decode('utf-8'))
+
+            self.restart()
+            return (
+                0,
+                "Restarting RESTful API server...",
+                ""
+            )
+
+        elif command['prefix'] == 'restful restart':
+            self.restart();
+            return (
+                0,
+                "Restarting RESTful API server...",
+                ""
+            )
+
+        else:
+            return (
+                -errno.EINVAL,
+                "",
+                "Command not found '{0}'".format(command['prefix'])
+            )
+
+
+    def get_doc_api(self, root, prefix=''):
+        doc = {}
+        for _obj in dir(root):
+            obj = getattr(root, _obj)
+
+            if isinstance(obj, RestController):
+                doc.update(self.get_doc_api(obj, prefix + '/' + _obj))
+
+        if getattr(root, '_lookup', None) and isinstance(root._lookup('0')[0], RestController):
+            doc.update(self.get_doc_api(root._lookup('0')[0], prefix + '/<arg>'))
+
+        prefix = prefix or '/'
+
+        doc[prefix] = {}
+        for method in 'get', 'post', 'patch', 'delete':
+            if getattr(root, method, None):
+                doc[prefix][method.upper()] = inspect.getdoc(getattr(root, method)).split('\n')
+
+        if len(doc[prefix]) == 0:
+            del doc[prefix]
+
+        return doc
+
+
+    def get_mons(self):
+        mon_map_mons = self.get('mon_map')['mons']
+        mon_status = json.loads(self.get('mon_status')['json'])
+
+        # Add more information
+        for mon in mon_map_mons:
+            mon['in_quorum'] = mon['rank'] in mon_status['quorum']
+            mon['server'] = self.get_metadata("mon", mon['name'])['hostname']
+            mon['leader'] = mon['rank'] == mon_status['quorum'][0]
+
+        return mon_map_mons
+
+
+    def get_osd_pools(self):
+        osds = dict(map(lambda x: (x['osd'], []), self.get('osd_map')['osds']))
+        pools = dict(map(lambda x: (x['pool'], x), self.get('osd_map')['pools']))
+        crush = self.get('osd_map_crush')
+        crush_rules = crush['rules']
+
+        osds_by_pool = {}
+        for pool_id, pool in pools.items():
+            pool_osds = None
+            for rule in [r for r in crush_rules if r['rule_id'] == pool['crush_rule']]:
+                pool_osds = common.crush_rule_osds(crush['buckets'], rule)
+
+            osds_by_pool[pool_id] = pool_osds
+
+        for pool_id in pools.keys():
+            for in_pool_id in osds_by_pool[pool_id]:
+                osds[in_pool_id].append(pool_id)
+
+        return osds
+
+
+    def get_osds(self, pool_id=None, ids=None):
+        # Get data
+        osd_map = self.get('osd_map')
+        osd_metadata = self.get('osd_metadata')
+
+        # Update the data with the additional info from the osd map
+        osds = osd_map['osds']
+
+        # Filter by osd ids
+        if ids is not None:
+            osds = [x for x in osds if str(x['osd']) in ids]
+
+        # Get list of pools per osd node
+        pools_map = self.get_osd_pools()
+
+        # map osd IDs to reweight
+        reweight_map = dict([
+            (x.get('id'), x.get('reweight', None))
+            for x in self.get('osd_map_tree')['nodes']
+        ])
+
+        # Build OSD data objects
+        for osd in osds:
+            osd['pools'] = pools_map[osd['osd']]
+            osd['server'] = osd_metadata.get(str(osd['osd']), {}).get('hostname', None)
+
+            osd['reweight'] = reweight_map.get(osd['osd'], 0.0)
+
+            if osd['up']:
+                osd['valid_commands'] = common.OSD_IMPLEMENTED_COMMANDS
+            else:
+                osd['valid_commands'] = []
+
+        # Filter by pool
+        if pool_id:
+            pool_id = int(pool_id)
+            osds = [x for x in osds if pool_id in x['pools']]
+
+        return osds
+
+
+    def get_osd_by_id(self, osd_id):
+        osd = [x for x in self.get('osd_map')['osds']
+               if x['osd'] == osd_id]
+
+        if len(osd) != 1:
+            return None
+
+        return osd[0]
+
+
+    def get_pool_by_id(self, pool_id):
+        pool = [x for x in self.get('osd_map')['pools']
+                if x['pool'] == pool_id]
+
+        if len(pool) != 1:
+            return None
+
+        return pool[0]
+
+
+    def submit_request(self, _request, **kwargs):
+        with self.requests_lock:
+            request = CommandsRequest(_request)
+            self.requests.append(request)
+        if kwargs.get('wait', 0):
+            while not request.is_finished():
+                time.sleep(0.001)
+        return request
+
+
+    def run_command(self, command):
+        # tag with 'seq' so that we can ignore these in notify function
+        result = CommandResult('seq')
+
+        self.send_command(result, 'mon', '', json.dumps(command), 'seq')
+        return result.wait()