Add an HTTP cache for SDC tests

Add a python script with SDC cached file from a test lab

Issue-ID: CLAMP-85
Change-Id: Ib932d5c80a399b85ae093dabb76c214e9f54ca63
Signed-off-by: Determe, Sebastien (sd378r) <sd378r@intl.att.com>

1 files changed, 124 insertions, 0 deletions

diff --git a/src/test/resources/http-cache/sdc_proxy.py b/src/test/resources/http-cache/sdc_proxy.py
new file mode 100644
index 000000000..301e7af9d
--- /dev/null
+++ b/src/test/resources/http-cache/sdc_proxy.py
@@ -0,0 +1,124 @@
+#!/usr/bin/env python2
+###
+# ============LICENSE_START=======================================================
+# ONAP CLAMP
+# ================================================================================
+# Copyright (C) 2018 AT&T Intellectual Property. All rights
+#                             reserved.
+# ================================================================================
+# 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.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ============LICENSE_END============================================
+# ===================================================================
+# ECOMP is a trademark and service mark of AT&T Intellectual Property.
+###
+
+import json
+import requests
+import os
+import sys
+import SimpleHTTPServer
+import SocketServer
+import argparse
+import tempfile
+import signal
+
+parser = argparse.ArgumentParser(description="SDC Cache & Replay")
+parser.add_argument("--username", "-u", type=str, help="Set the username for contacting SDC")
+parser.add_argument("--password", "-p", type=str, help="Set the password for contacting SDC")
+parser.add_argument("--root",     "-r", default=tempfile.mkdtemp, type=str, help="Root folder for the proxy cache")
+parser.add_argument("--proxy"         , type=str, help="Url of the  Act as a proxy. If not set, this script only uses the cache and will return a 404 if files aren't found")
+parser.add_argument("--port",     "-P", type=int, default="8081", help="Port on which the proxy should listen to")
+parser.add_argument("--verbose",  "-v", type=bool, help="Print more information in case of error")
+options = parser.parse_args()
+
+
+PORT = options.port
+SDC_HOST = options.proxy
+SDC_AUTH = (options.username, options.password)
+SDC_HEADERS = {'X-ECOMP-InstanceID':'CLAMP'}
+CACHE_ROOT = options.root
+
+def signal_handler(signal_sent, frame):
+    global httpd
+    if signal_sent == signal.SIGINT:
+        print('Got Ctrl-C (SIGINT)')
+        httpd.socket.close()
+        httpd.shutdown()
+        httpd.server_close()
+
+class Proxy(SimpleHTTPServer.SimpleHTTPRequestHandler):
+
+    def print_headers(self):
+        for header,value in self.headers.items():
+            print("%s : %s" % (header, value))
+
+    def check_credentials(self):
+        pass
+
+    def _send_content(self, header_file, content_file):
+        self.send_response(200)
+        with open(header_file, 'rb') as f:
+            headers = json.load(f)
+            for key,value in headers.items():
+                if key in ('Transfer-Encoding',):
+                    continue
+                self.send_header(key, value)
+            self.end_headers()
+        with open(content_file,'rb') as f:
+            fc = f.read()
+            self.wfile.write(fc)
+
+    def _write_cache(self,cached_file, header_file, content_file, response):
+        os.makedirs(cached_file, True)
+        with open(content_file, 'w') as f:
+            f.write(response.raw.read())
+        with open(header_file, 'w') as f:
+            json.dump(dict(response.raw.headers), f)
+    # Entry point of the code
+    def do_GET(self):
+
+        self.print_headers()
+        self.check_credentials()
+
+        cached_file = '%s/%s' % (CACHE_ROOT, self.path,)
+        cached_file_content = "%s/.file" % (cached_file,)
+        cached_file_header = "%s/.header" % (cached_file,)
+
+        _file_available = os.path.exists(cached_file_content)
+        if not _file_available and not SDC_HOST:
+            self.send_response(404)
+            return "404 Not found"
+
+        if not _file_available:
+            print("Request for not cached file : %s" % (cached_file,))
+            url = '%s%s' % (SDC_HOST, self.path)
+            response = requests.get(url, auth=SDC_AUTH, headers=SDC_HEADERS, stream=True)
+
+            if response.status_code == 200:
+                self._write_cache(cached_file, cached_file_header, cached_file_content, response)
+            else:
+                print('Error when requesting file :')
+                print('Requested url : %s' % (url,))
+                print('Status code : %s' % (response.status_code,))
+                print('Content : %s' % (response.content,))
+                self.send_response(response.status_code)
+                return response.content
+
+        self._send_content(cached_file_header, cached_file_content)
+
+# Main code that start the HTTP server
+httpd = SocketServer.ForkingTCPServer(('', PORT), Proxy)
+httpd.allow_reuse_address = True
+print "Listening on port "+ str(PORT) + " and caching in " + CACHE_ROOT + "(Press Ctrl+C to stop HTTPD Caching script)"
+signal.signal(signal.SIGINT, signal_handler)
+httpd.serve_forever()
\ No newline at end of file