From d2401bc3d6b3366951faacfd9984d37ee73d126b Mon Sep 17 00:00:00 2001
From: hariharan97 <rh20085046@wipro.com>
Date: Thu, 3 Dec 2020 13:33:11 +0530
Subject: 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>
---
 osdf/config/consulconfig.py | 52 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100644 osdf/config/consulconfig.py

(limited to 'osdf/config/consulconfig.py')

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()
-- 
cgit 1.2.3-korg