Retrieval of information by release channel

Polls omahaproxy for data about Chrome releases

BUG=
NOTRY=true

Review URL: https://codereview.chromium.org/1063073003

Cr-Commit-Position: refs/heads/master@{#27841}

tools/release/releases.py

@@ -381,7 +381,7 @@ class RetrieveChromiumV8Releases(Step):
 
 
 # TODO(machenbach): Unify common code with method above.
-class RietrieveChromiumBranches(Step):
+class RetrieveChromiumBranches(Step):
   MESSAGE = "Retrieve Chromium branch information."
 
   def RunStep(self):
@@ -433,6 +433,37 @@ class RietrieveChromiumBranches(Step):
       releases_dict.get(revision, {})["chromium_branch"] = ranges
 
 
+class RetrieveInformationOnChromeReleases(Step):
+  MESSAGE = 'Retrieves relevant information on the latest Chrome releases'
+
+  def Run(self):
+
+    params = None
+    result_raw = self.ReadURL(
+                             "http://omahaproxy.appspot.com/all.json",
+                             params,
+                             wait_plan=[5, 20]
+                             )
+    recent_releases = json.loads(result_raw)
+
+    canaries = []
+
+    for current_os in recent_releases:
+      for current_version in current_os["versions"]:
+        current_candidate = {
+                            "chrome_version": current_version["version"],
+                           "os": current_version["os"],
+                           "release_date": current_version["current_reldate"],
+                           "v8_version": current_version["v8_version"],
+                           }
+
+        if current_version["channel"] == "canary":
+          canaries.append(current_candidate)
+
+    chrome_releases = {"canaries": canaries}
+    self["chrome_releases"] = chrome_releases
+
+
 class CleanUp(Step):
   MESSAGE = "Clean up."
 
@@ -444,6 +475,12 @@ class WriteOutput(Step):
   MESSAGE = "Print output."
 
   def Run(self):
+
+    output = {
+              "releases": self["releases"],
+              "chrome_releases": self["chrome_releases"],
+              }
+
     if self._options.csv:
       with open(self._options.csv, "w") as f:
         writer = csv.DictWriter(f,
@@ -455,9 +492,9 @@ class WriteOutput(Step):
           writer.writerow(release)
     if self._options.json:
       with open(self._options.json, "w") as f:
-        f.write(json.dumps(self["releases"]))
+        f.write(json.dumps(output))
     if not self._options.csv and not self._options.json:
-      print self["releases"]  # pragma: no cover
+      print output  # pragma: no cover
 
 
 class Releases(ScriptsBase):
@@ -486,12 +523,14 @@ class Releases(ScriptsBase):
     }
 
   def _Steps(self):
+
     return [
       Preparation,
       RetrieveV8Releases,
       UpdateChromiumCheckout,
       RetrieveChromiumV8Releases,
-      RietrieveChromiumBranches,
+      RetrieveChromiumBranches,
+      RetrieveInformationOnChromeReleases,
       CleanUp,
       WriteOutput,
     ]

tools/release/test_scripts.py

@@ -1419,8 +1419,18 @@ Cr-Commit-Position: refs/heads/4.2.71@{#1}
       Cmd("git branch -r", " weird/123\n  branch-heads/7\n", cwd=chrome_dir),
       Cmd("git show refs/branch-heads/7:DEPS", c_deps % "hash_345",
           cwd=chrome_dir),
+      URL("http://omahaproxy.appspot.com/all.json", """[{
+        "os": "win",
+        "versions": [{
+          "version": "1.1.1.1",
+          "v8_version": "2.2.2.2",
+          "current_reldate": "04/09/15",
+          "os": "win",
+          "channel": "canary"
+          }]
+        }]"""),
       Cmd("git checkout -f origin/master", ""),
-      Cmd("git branch -D %s" % TEST_CONFIG["BRANCHNAME"], ""),
+      Cmd("git branch -D %s" % TEST_CONFIG["BRANCHNAME"], "")
     ])
 
     args = ["-c", TEST_CONFIG["CHROMIUM"],
@@ -1436,7 +1446,15 @@ Cr-Commit-Position: refs/heads/4.2.71@{#1}
            "3.3.1.1,3.3,234,,abc12\r\n")
     self.assertEquals(csv, FileToText(csv_output))
 
-    expected_json = [
+    expected_json = {"chrome_releases":{
+                                        "canaries": [
+                                                     {
+                           "chrome_version": "1.1.1.1",
+                           "os": "win",
+                           "release_date": "04/09/15",
+                           "v8_version": "2.2.2.2",
+                           }]},
+                     "releases":[
       {
         "revision": "1",
         "revision_git": "hash_456",
@@ -1493,8 +1511,8 @@ Cr-Commit-Position: refs/heads/4.2.71@{#1}
         "date": "18:15",
         "chromium_branch": "",
         "revision_link": "https://code.google.com/p/v8/source/detail?r=234",
-      },
-    ]
+      },],
+    }
     self.assertEquals(expected_json, json.loads(FileToText(json_output)))