Retrieving version of PowerDNS server by API

diff --git a/pp_lib/pdns_app.py b/pp_lib/pdns_app.py
index fa54c2be0897180116fd1c3a694d61d1bf09cb3d..91cf0384b390f8b9f97569a14a4d420c5306a83f 100644 (file)
--- a/pp_lib/pdns_app.py
+++ b/pp_lib/pdns_app.py
@@ -32,7 +32,7 @@ from .cfg_app import PpCfgAppError, PpConfigApplication
 from .pdns_zone import PdnsApiZone
 from .pdns_record import PdnsApiRecord, PdnsSoaData, PdnsApiRrset
 
-__version__ = '0.6.3'
+__version__ = '0.6.4'
 LOG = logging.getLogger(__name__)
 _LIBRARY_NAME = "pp-pdns-api-client"
 
@@ -118,6 +118,7 @@ class PpPDNSApplication(PpConfigApplication):
         self._api_host = self.api_hosts['global']
         self._api_port = self.default_api_port
         self._api_servername = self.default_api_servername
+        self._api_server_version = 'unknown'
         self._user_agent = '{}/{}'.format(_LIBRARY_NAME, self.version)
         self._timeout = self.default_timeout
 
@@ -213,6 +214,12 @@ class PpPDNSApplication(PpConfigApplication):
             raise PpPDNSAppError("Invalid API server name {!r} given.".format(value))
         self._api_servername = str(value).strip()
 
+    # -----------------------------------------------------------
+    @property
+    def api_server_version(self):
+        "The version of the PowerDNS server, how provided by API."
+        return self._api_server_version
+
     # -----------------------------------------------------------
     @property
     def user_agent(self):
@@ -280,6 +287,7 @@ class PpPDNSApplication(PpConfigApplication):
         res['environment'] = self.environment
         res['timeout'] = self.timeout
         res['user_agent'] = self.user_agent
+        res['api_server_version'] = self.api_server_version
 
         return res
 
@@ -466,6 +474,7 @@ class PpPDNSApplication(PpConfigApplication):
         logging.getLogger("requests").setLevel(logging.WARNING)
 
         super(PpPDNSApplication, self).pre_run()
+        self.get_api_server_version()
 
     # -------------------------------------------------------------------------
     def _run(self):
@@ -488,6 +497,25 @@ class PpPDNSApplication(PpConfigApplication):
         if self.verbose > 1:
             LOG.debug("executing post_run() ...")
 
+    # -------------------------------------------------------------------------
+    def get_api_server_version(self):
+
+        path = "/servers/{}".format(self.api_servername)
+        try:
+            json_response = self.perform_request(path)
+        except (PDNSApiNotFoundError, PDNSApiValidationError) as e:
+            LOG.error("Could not found server info.")
+            return None
+        if self.verbose > 2:
+            LOG.debug("Got a response:\n{}".format(pp(json_response)))
+
+        if 'version' in json_response:
+            self._api_server_version = json_response['version']
+            LOG.info("PowerDNS server version {!r}.".format(self.api_server_version))
+            return self.api_server_version
+        LOG.error("Did not found version info in server info:\n{}".format(pp(json_response)))
+        return None
+
     # -------------------------------------------------------------------------
     def _build_url(self, path):