Currently we hand over a crash ping to the pingsender via a pipe; if the
pingsender fails to send the ping we rely on the CrashManager assembling and
sending one instead. Since the crashmanager is not aware of whether the ping
was sent or not this causes duplication on the server side. To solve this
problem we save the ping to disk instead, read it from the pingsender and
delete the file only if the ping was sent. In this scenario the CrashManager
will know that a ping was already sent and will not send a new one.
This patch removes all the code used to deal with pipes between the telemetry,
crashreporter and pingsender code and also tries to cut down the amount of
platform-specific code we have in this machinery.
MozReview-Commit-ID: ASm2jnDagCK
This patch changes the crashreporter client code as well as the crash service
code to compute a SHA256 hash of a crash' minidump file and add it to the
crash ping. The crash service code computes the hash on the fly before handing
over the crash to the crash manager; the crash manager will then add it to the
crash ping. The crashreporter client on the other hand sends the hash via the
ping it generates but it also adds it to the event file so that the crash
manager can pick it up and send it along with its own crash ping. On Fennec
the crashreporter activity takes care of computing the hash.
SHA256 hash computation uses nsICryptoHash in the crash service, the
java.security.MessageDigest class in Fennec, the bundled NSS library in the
crashreporter when running on Windows and Mac and the system-provided NSS
library under Linux. The latter is required because the crashreporter client
uses the system curl library which is linked to NSS and which would thus clash
with the bundled one if used together.
This patch introduces two new methods for the nsICrashService interface:
|getMinidumpForID()| and |getExtraFileForID()|, these reliably retrieve the
.dmp and .extra files associated with a crash and ensure the files exist
before returning. These new methods are used in the CrashService for
processing and will become the only way to reliably retrieve those files
from a crash ID.
MozReview-Commit-ID: 8BKvqj6URcO
crashDate having only per-day resolution was making client delay analysis
rather inaccurate.
crashTime is an ISO8601 string with per-hour resolution which should smooth
things over on the analysis side.
If per-hour is still too coarse, the use of an ISO string allows us to adapt
later to increasing the resolution, if it passes data review. The underlying
crash timestamp has per-second resolution.
MozReview-Commit-ID: 2hwJHSi8Xje
There was a hard-coded date in test_crash_manager.js of around August 3,
2013. This meant that about a year later we would start to run into
boundary issues since we weren't wrapping Date.now() inside
CrashManager.jsm.
It turns out the actual value of DUMMY_DATE doesn't really matter. So,
the test has been changed to produce a value that is reasonably modern.
While I was debugging this, I noticed we're not getting logging in the
tests. So I added that.
