OOF - Externalize configuration with Consul

Issue-ID: OPTFRA-875

Signed-off-by: hariharan97 <rh20085046@wipro.com>
Change-Id: I30d25e082227d7b39f7d391365197e9130dc51e8
Signed-off-by: hariharan97 <rh20085046@wipro.com>

6 files changed, 86 insertions, 2 deletions

diff --git a/config/osdf_config.yaml b/config/osdf_config.yaml
index 1800ce5..3459939 100755
--- a/config/osdf_config.yaml
+++ b/config/osdf_config.yaml
@@ -72,3 +72,11 @@ pciHMSPassword: passwd
 
 #key
 #appkey: os35@rrtky400fdntc#001t5
+
+#consulconfig
+consulHost: '127.0.0.1'
+consulPort: 8500
+consulScheme: 'http'
+consulVerify: True
+consulCert: None
+activateConsulConfig: False
diff --git a/osdf/config/base.py b/osdf/config/base.py
index 2393642..be693cb 100644
--- a/osdf/config/base.py
+++ b/osdf/config/base.py
@@ -18,10 +18,11 @@
 #
 
 import os
-
+from osdf.config.consulconfig import call_consul_kv
 import osdf.config.credentials as creds
 import osdf.config.loader as config_loader
 from osdf.utils.programming_utils import DotDict
+from threading import Thread
 
 config_spec = {
     "deployment": os.environ.get("OSDF_CONFIG_FILE", "config/osdf_config.yaml"),
@@ -39,3 +40,10 @@ http_basic_auth_credentials = creds.load_credentials(osdf_config)
 dmaap_creds = creds.dmaap_creds()
 
 creds_prefixes = {"so": "so", "cm": "cmPortal", "pcih": "pciHMS"}
+
+osdf_config_deployment = osdf_config.deployment
+
+
+if osdf_config.deployment.get('activateConsulConfig'):
+    consulthread = Thread(target=call_consul_kv, args=(osdf_config,))
+    consulthread.start()
diff --git a/osdf/config/consulconfig.py b/osdf/config/consulconfig.py
new file mode 100644
index 0000000..fc5b3fe
--- /dev/null
+++ b/osdf/config/consulconfig.py
@@ -0,0 +1,52 @@
+from consul.base import Timeout
+from consul.tornado import Consul
+import json
+from osdf.logging.osdf_logging import debug_log
+from tornado.gen import coroutine
+from tornado.ioloop import IOLoop
+
+
+class Config(object):
+    def __init__(self, loop, osdf_final_config):
+        self.config = osdf_final_config
+        osdf_config = self.config['osdf_config']
+        self.consul = Consul(host=osdf_config['consulHost'], port=osdf_config['consulPort'],
+                             scheme=osdf_config['consulScheme'], verify=osdf_config['consulVerify'],
+                             cert=osdf_config['consulCert'])
+        result = json.dumps(self.config)
+        self.consul.kv.put("osdfconfiguration", result)
+        loop.add_callback(self.watch)
+
+    @coroutine
+    def watch(self):
+        index = None
+        while True:
+            try:
+                index, data = yield self.consul.kv.get('osdfconfiguration', index=index)
+                if data is not None:
+                    self.update_config(data)
+            except Timeout:
+                pass
+            except Exception as e:
+                debug_log.debug('Exception Encountered {}'.format(e))
+
+    def update_config(self, data):
+        new_config = json.loads(data['Value'].decode('utf-8'))
+        osdf_deployment = new_config['osdf_config']
+        osdf_core = new_config['common_config']
+        self.config['osdf_config'].update(osdf_deployment)
+        self.config['common_config'].update(osdf_core)
+        debug_log.debug("updated config {}".format(new_config))
+        debug_log.debug("value changed")
+
+
+def call_consul_kv(osdf_config):
+    osdf_final_config = {
+        'osdf_config': osdf_config.deployment,
+        'common_config': osdf_config.core
+    }
+    io_loop = IOLoop()
+    io_loop.make_current()
+    IOLoop.current(instance=False)
+    _ = Config(io_loop, osdf_final_config)
+    io_loop.start()
diff --git a/requirements.txt b/requirements.txt
index c3749e8..033c65c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,3 +15,5 @@ pymzn>=0.18.3
 onappylog>=1.0.9
 pathtools>=0.1.2
 pycryptodome>=3.9.6
+python-consul>=1.1.0
+tornado>=6.1
diff --git a/test/config/osdf_config.yaml b/test/config/osdf_config.yaml
index ef73d4c..793de63 100755
--- a/test/config/osdf_config.yaml
+++ b/test/config/osdf_config.yaml
@@ -79,3 +79,11 @@ desHeaders:
   Content-Type: application/json
 desUsername:
 desPassword:
+
+#consulconfig
+consulHost: '127.0.0.1'
+consulPort: 8500
+consulScheme: 'http'
+consulVerify: True
+consulCert: None
+activateConsulConfig: False
\ No newline at end of file
diff --git a/test/functest/simulators/simulated-config/osdf_config.yaml b/test/functest/simulators/simulated-config/osdf_config.yaml
index d4d20c9..2f03d99 100755
--- a/test/functest/simulators/simulated-config/osdf_config.yaml
+++ b/test/functest/simulators/simulated-config/osdf_config.yaml
@@ -77,4 +77,10 @@ aaiGetControllersUrl: /aai/v19/external-system/esr-thirdparty-sdnc-list
 controllerQueryUrl: /aai/v19/query?format=resource
 aaiGetInterDomainLinksUrl: /aai/v19/network/logical-links?link-type=inter-domain&operational-status=up
 
-
+#consulconfig
+consulHost: '127.0.0.1'
+consulPort: 8500
+consulScheme: 'http'
+consulVerify: True
+consulCert: None
+activateConsulConfig: False