[dev-util] Add stage_debug,symbolicate_dump endpoints to dev server
Add an endpoint to the dev server that will synchronously download
and stage the debug symbols for a given build.
Add an endpoint to the dev server that will symbolicate a minidump.
BUG=chromium-os:29850,chromium-os:30399
TEST=unit
TEST=run dev server, use curl to make it download some artifacts; ensure
TEST=debug.tgz is _not_ downloaded immediately, but that the rest of the build is staged.
TEST=run dev server, use curl to make it download debug_symbols; check to
TEST=see that debug symbols are staged in static/archive
TEST=once symbols are staged, run the dev server in your
TEST=chroot and use curl with a minidump file like this:
TEST= curl -F minidump=@/home/cmasone/chromeos/phooey/powerd.20120424.141235.1005.dmp http://localhost:8080/symbolicate_dump
Change-Id: Ie460526396d2b9999137142c723b87793bc23aaa
Reviewed-on: https://gerrit.chromium.org/gerrit/21696
Reviewed-by: Chris Sosa <sosa@chromium.org>
Commit-Ready: Chris Masone <cmasone@chromium.org>
Tested-by: Chris Masone <cmasone@chromium.org>
diff --git a/devserver.py b/devserver.py
index bb22e22..a9c9cd0 100755
--- a/devserver.py
+++ b/devserver.py
@@ -7,11 +7,14 @@
"""A CherryPy-based webserver to host images and build packages."""
import cherrypy
+import cStringIO
import logging
import optparse
import os
import re
import sys
+import subprocess
+import tempfile
import autoupdate
import devserver_util
@@ -240,6 +243,61 @@
return return_obj
@cherrypy.expose
+ def stage_debug(self, **kwargs):
+ """Downloads and stages debug symbol payloads from Google Storage.
+
+ This methods downloads the debug symbol build artifact synchronously,
+ and then stages it for use by symbolicate_dump/.
+
+ Args:
+ archive_url: Google Storage URL for the build.
+
+ Example URL:
+ 'http://myhost/stage_debug?archive_url=gs://chromeos-image-archive/'
+ 'x86-generic/R17-1208.0.0-a1-b338'
+ """
+ archive_url = kwargs.get('archive_url')
+ if not archive_url:
+ raise DevServerError("Didn't specify the archive_url in request")
+
+ return downloader.SymbolDownloader(updater.static_dir).Download(archive_url)
+
+ @cherrypy.expose
+ def symbolicate_dump(self, minidump):
+ """Symbolicates a minidump using pre-downloaded symbols, returns it.
+
+ Callers will need to POST to this URL with a body of MIME-type
+ "multipart/form-data".
+ The body should include a single argument, 'minidump', containing the
+ binary-formatted minidump to symbolicate.
+
+ It is up to the caller to ensure that the symbols they want are currently
+ staged.
+
+ Args:
+ minidump: The binary minidump file to symbolicate.
+ """
+ to_return = ''
+ with tempfile.NamedTemporaryFile() as local:
+ while True:
+ data = minidump.file.read(8192)
+ if not data:
+ break
+ local.write(data)
+ local.flush()
+ stackwalk = subprocess.Popen(['minidump_stackwalk',
+ local.name,
+ updater.static_dir + '/debug/breakpad'],
+ stdout=subprocess.PIPE,
+ stderr=subprocess.PIPE)
+ to_return, error_text = stackwalk.communicate()
+ if stackwalk.returncode != 0:
+ raise DevServerError("Can't generate stack trace: %s (rc=%d)" % (
+ error_text, stackwalk.returncode))
+
+ return to_return
+
+ @cherrypy.expose
def wait_for_status(self, **kwargs):
"""Waits for background artifacts to be downloaded from Google Storage.