Setup micro-service of multivim broker

[multicloud/framework.git] / multivimbroker / multivimbroker / pub / utils / restcall.py

diff --git a/multivimbroker/multivimbroker/pub/utils/restcall.py b/multivimbroker/multivimbroker/pub/utils/restcall.py
new file mode 100644 (file)
index 0000000..440ed24
--- /dev/null
+++ b/multivimbroker/multivimbroker/pub/utils/restcall.py
@@ -0,0 +1,92 @@
+# Copyright (c) 2017 Wind River Systems, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+
+import sys
+import traceback
+import logging
+import urllib2
+import uuid
+import httplib2
+
+from multivimbroker.pub.config.config import MSB_SERVICE_IP, MSB_SERVICE_PORT
+
+rest_no_auth, rest_oneway_auth, rest_bothway_auth = 0, 1, 2
+HTTP_200_OK, HTTP_201_CREATED, HTTP_204_NO_CONTENT, HTTP_202_ACCEPTED = '200', '201', '204', '202'
+status_ok_list = [HTTP_200_OK, HTTP_201_CREATED, HTTP_204_NO_CONTENT, HTTP_202_ACCEPTED]
+HTTP_404_NOTFOUND, HTTP_403_FORBIDDEN, HTTP_401_UNAUTHORIZED, HTTP_400_BADREQUEST = '404', '403', '401', '400'
+
+logger = logging.getLogger(__name__)
+
+
+def call_req(base_url, user, passwd, auth_type, resource, method, content=''):
+    callid = str(uuid.uuid1())
+    logger.debug("[%s]call_req('%s','%s','%s',%s,'%s','%s','%s')" % (
+        callid, base_url, user, passwd, auth_type, resource, method, content))
+    ret = None
+    resp_status = ''
+    try:
+        full_url = combine_url(base_url, resource)
+        headers = {'content-type': 'application/json', 'accept': 'application/json'}
+        if user:
+            headers['Authorization'] = 'Basic ' + ('%s:%s' % (user, passwd)).encode("base64")
+        ca_certs = None
+        for retry_times in range(3):
+            http = httplib2.Http(ca_certs=ca_certs, disable_ssl_certificate_validation=(auth_type == rest_no_auth))
+            http.follow_all_redirects = True
+            try:
+                resp, resp_content = http.request(full_url, method=method.upper(), body=content, headers=headers)
+                resp_status, resp_body = resp['status'], resp_content.decode('UTF-8')
+                logger.debug("[%s][%d]status=%s,resp_body=%s)" % (callid, retry_times, resp_status, resp_body))
+                if resp_status in status_ok_list:
+                    ret = [0, resp_body, resp_status]
+                else:
+                    ret = [1, resp_body, resp_status]
+                break
+            except Exception as ex:
+                if 'httplib.ResponseNotReady' in str(sys.exc_info()):
+                    logger.debug("retry_times=%d", retry_times)
+                    logger.error(traceback.format_exc())
+                    ret = [1, "Unable to connect to %s" % full_url, resp_status]
+                    continue
+                raise ex
+    except urllib2.URLError as err:
+        ret = [2, str(err), resp_status]
+    except Exception as ex:
+        logger.error(traceback.format_exc())
+        logger.error("[%s]ret=%s" % (callid, str(sys.exc_info())))
+        res_info = str(sys.exc_info())
+        if 'httplib.ResponseNotReady' in res_info:
+            res_info = "The URL[%s] request failed or is not responding." % full_url
+        ret = [3, res_info, resp_status]
+    except:
+        logger.error(traceback.format_exc())
+        ret = [4, str(sys.exc_info()), resp_status]
+
+    logger.debug("[%s]ret=%s" % (callid, str(ret)))
+    return ret
+
+
+def req_by_msb(resource, method, content=''):
+    base_url = "http://%s:%s/" % (MSB_SERVICE_IP, MSB_SERVICE_PORT)
+    return call_req(base_url, "", "", rest_no_auth, resource, method, content)
+
+
+def combine_url(base_url, resource):
+    full_url = None
+    if base_url.endswith('/') and resource.startswith('/'):
+        full_url = base_url[:-1] + resource
+    elif base_url.endswith('/') and not resource.startswith('/'):
+        full_url = base_url + resource
+    elif not base_url.endswith('/') and resource.startswith('/'):
+        full_url = base_url + resource
+    else:
+        full_url = base_url + '/' + resource
+    return full_url