Initial checkin of prometheus example plugins for the blog post

examples/plugins/prometheus/1-basic-http-server.py

@@ -0,0 +1,40 @@
+#!/usr/bin/env python
+
+import BaseHTTPServer
+import SocketServer
+import errno
+import os
+import signal
+import socket
+
+PLUGIN_ID="prometheus"
+PLUGIN_UNIX_SOCK = "/var/run/scope/plugins/" + PLUGIN_ID + ".sock"
+
+class Handler(BaseHTTPServer.BaseHTTPRequestHandler):
+    def do_GET(self):
+        # The logger requires a client_address, but unix sockets don't have
+        # one, so we fake it.
+        self.client_address = "-"
+
+        # Send the headers
+        self.send_response(200)
+        self.end_headers()
+
+        # Send the body
+        self.wfile.write(b"foo")
+
+def mkdir_p(path):
+    try:
+        os.makedirs(path)
+    except OSError as exc:
+        if exc.errno == errno.EEXIST and os.path.isdir(path):
+            pass
+        else:
+            raise
+
+def main():
+    mkdir_p(os.path.dirname(PLUGIN_UNIX_SOCK))
+    server = SocketServer.UnixStreamServer(PLUGIN_UNIX_SOCK, Handler)
+    server.serve_forever()
+
+main()