From 425015014eab514b377e6454771540d284e48a58 Mon Sep 17 00:00:00 2001
From: Pedro Alvarez <pedro.alvarez@codethink.co.uk>
Date: Mon, 28 Mar 2016 16:38:42 +0000
Subject: Start creating RequestsManager to listen to requests

Change-Id: I5b660939333c57a6a47f384dc4f346a48334ffe9
---
 gear/client.py | 71 +++++++++++++++++++++++++++++++++++++++++++++++++---------
 1 file changed, 61 insertions(+), 10 deletions(-)

(limited to 'gear')

diff --git a/gear/client.py b/gear/client.py
index dea67a0d..9dc1df60 100644
--- a/gear/client.py
+++ b/gear/client.py
@@ -3,6 +3,8 @@ import sys
 import json
 import threading
 import requests
+import time
+import signal
 import urlparse
 import distbuild
 #TODO: values from settings
@@ -263,17 +265,20 @@ class BuilderClient(gear.Client):
         job.data = []
         return job
 
-class RequestsController():
+class RequestsController(threading.Thread):
     def __init__(self):
+        super(RequestsController, self).__init__()
         self.building_list = []
         self.next_id = 1
         self.new_request_lock = threading.Lock()
         self.lock_queue = threading.Condition()
         self.build_requests = []
         self.build_status_lock = threading.Lock()
+        self.stopped = False
 
     def add_request(self, request):
         json_request = json.dumps(request)
+        print "DEBUG: adding request - %s" % json_request
         request_data = {}
         with self.new_request_lock:
             request_data['id'] = self.next_id
@@ -325,20 +330,66 @@ class RequestsController():
                         artifact.state = BUILDING
                         print "TO %s: Artifact %s building" % (request['id'],artifact.name)
 
-    #consider chunks case
+    def shutdown(self):
+        self.stopped = True
+        with self.lock_queue:
+            self.lock_queue.notify()
 
-    def loop(self):
-        while True:
+    def run(self):
+        while not self.stopped:
             with self.lock_queue:
-                self.lock_queue.wait(20)
-            self.queue_if_possible()
+                self.lock_queue.wait()
+            if not self.stopped:
+                self.queue_if_possible()
+
+
+class RequestsManager(threading.Thread):
+    def __init__(self, requests_controller):
+        super(RequestsManager, self).__init__()
+        self.requests_controller = requests_controller
+        self.worker = gear.Worker('controller')
+        self.worker.addServer('localhost')
+        self.worker.registerFunction("build-request")
+        self.stopped = False
+
+    def run(self):
+        while not self.stopped:
+            try:
+                print "DEBUG: Waiting for job"
+                job = self.worker.getJob()
+                self._handle_job(job)
+            except gear.InterruptedError:
+                print 'We were asked to stop waiting for jobs'
+
+    def shutdown(self):
+        self.stopped = True
+        self.worker.stopWaitingForJobs()
+
+    def _handle_job(self, job):
+        build_request=json.loads(job.arguments)
+        self.requests_controller.add_request(build_request)
 
 request = {}
 request['repo'] = "baserock:baserock/definitions"
 request['ref'] = "fbce45e45da79e5c35341845ec3b3d7c321e6ff2"
 request['system'] = "systems/minimal-system-x86_64-generic.morph"
-requests_controller = RequestsController()
-requests_controller.add_request(request)
-requests_controller.add_request(request)
 
-requests_controller.loop()
+# Command line
+requests_controller = RequestsController()
+requests_manager = RequestsManager(requests_controller)
+
+def term_handler(signum, frame):
+    requests_manager.shutdown()
+    requests_controller.shutdown()
+signal.signal(signal.SIGTERM, term_handler)
+
+requests_controller.start()
+requests_manager.start()
+
+while not requests_controller.stopped:
+    try:
+        time.sleep(3)
+    except KeyboardInterrupt:
+        print "Ctrl + C: asking tasks to exit nicely...\n"
+        requests_manager.shutdown()
+        requests_controller.shutdown()
-- 
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