[libc++] This is a dummy Phabricator review to test pre-commit testing

[ldionne]

Trigger build

[ldionne]

Don't run CI for real to speed things up.

[ldionne]

Pretend that one job is failing to see what happens

[ldionne]

Turn on Phabricator reporting

[ldionne]

Turn back on full testing. Let's see how that goes.

[ldionne]

Added exponential backoff retries in phabricator-report

[ldionne]

Don't run the benchmarks for now, that's really too long.

[ldionne]

Don't run the benchmarks, it's too long.

[ldionne]

Adjust how we're determining failures.

[ldionne]

Try running the buildkite agent as non-root.

[ldionne]

Run as non-root in a way that actually works.

[ldionne]

Fix which GCC is used

[ldionne]

Rebase onto master to get some fixes in

[ldionne]

Rebase onto master with GCC fixes

[ldionne]

Also handle non-phab review commits

[ldionne]

Play around with triggering

[ldionne]

Try fixing trigger

[ldionne]

Correct pipeline name

[ldionne]

Improve message

[ldionne]

Rebase onto master

[ldionne]

Rebase onto master

libcxx/utils/ci/buildkite-pipeline.yml

 #
 # This file should never contain logic -- all the logic must be offloaded
 # into scripts. This is critical to being able to reproduce CI issues outside
 # of the CI environment, which is important for debugging.
 #
 
 steps:
   - label: "C++03"
-    command: "set -o pipefail && libcxx/utils/ci/run-buildbot.sh x86_64-ubuntu-cxx03"
+    command: "set -o pipefail && libcxx/utils/ci/run-buildbot.sh x86_64-ubuntu-cxx03 | libcxx/utils/ci/phabricator-report"
     agents:
       queue: "libcxx-builders"
 
   - label: "C++11"
-    command: "set -o pipefail && libcxx/utils/ci/run-buildbot.sh x86_64-ubuntu-cxx11"
+    command: "set -o pipefail && libcxx/utils/ci/run-buildbot.sh x86_64-ubuntu-cxx11 | libcxx/utils/ci/phabricator-report"
     agents:
       queue: "libcxx-builders"
 
   - label: "C++14"
-    command: "set -o pipefail && libcxx/utils/ci/run-buildbot.sh x86_64-ubuntu-cxx14"
+    command: "set -o pipefail && libcxx/utils/ci/run-buildbot.sh x86_64-ubuntu-cxx14 | libcxx/utils/ci/phabricator-report"
     agents:
       queue: "libcxx-builders"
 
   - label: "C++17"
-    command: "set -o pipefail && libcxx/utils/ci/run-buildbot.sh x86_64-ubuntu-cxx17"
+    command: "set -o pipefail && libcxx/utils/ci/run-buildbot.sh x86_64-ubuntu-cxx17 | libcxx/utils/ci/phabricator-report"
     agents:
       queue: "libcxx-builders"
 
   - label: "C++20"
-    command: "set -o pipefail && libcxx/utils/ci/run-buildbot.sh x86_64-ubuntu-cxx2a"
+    command: "set -o pipefail && libcxx/utils/ci/run-buildbot.sh x86_64-ubuntu-cxx2a | libcxx/utils/ci/phabricator-report"
     agents:
       queue: "libcxx-builders"
 
   - label: "-fno-exceptions"
-    command: "set -o pipefail && libcxx/utils/ci/run-buildbot.sh x86_64-ubuntu-noexceptions"
+    command: "set -o pipefail && libcxx/utils/ci/run-buildbot.sh x86_64-ubuntu-noexceptions | libcxx/utils/ci/phabricator-report"
     agents:
       queue: "libcxx-builders"
 
   - label: "32 bits"
-    command: "set -o pipefail && libcxx/utils/ci/run-buildbot.sh x86_64-ubuntu-32bit"
+    command: "set -o pipefail && libcxx/utils/ci/run-buildbot.sh x86_64-ubuntu-32bit | libcxx/utils/ci/phabricator-report"
     agents:
       queue: "libcxx-builders"
 
   - label: "GCC/C++20"
-    command: "set -o pipefail && libcxx/utils/ci/run-buildbot.sh x86_64-ubuntu-gcc"
+    command: "set -o pipefail && libcxx/utils/ci/run-buildbot.sh x86_64-ubuntu-gcc | libcxx/utils/ci/phabricator-report"
     agents:
       queue: "libcxx-builders"
 
   - label: "ASAN"
-    command: "set -o pipefail && libcxx/utils/ci/run-buildbot.sh x86_64-ubuntu-asan"
+    command: "set -o pipefail && libcxx/utils/ci/run-buildbot.sh x86_64-ubuntu-asan | libcxx/utils/ci/phabricator-report"
     agents:
       queue: "libcxx-builders"
 
   - label: "TSAN"
-    command: "set -o pipefail && libcxx/utils/ci/run-buildbot.sh x86_64-ubuntu-tsan"
+    command: "set -o pipefail && libcxx/utils/ci/run-buildbot.sh x86_64-ubuntu-tsan | libcxx/utils/ci/phabricator-report"
     agents:
       queue: "libcxx-builders"
 
   - label: "UBSAN"
-    command: "set -o pipefail && libcxx/utils/ci/run-buildbot.sh x86_64-ubuntu-ubsan"
+    command: "set -o pipefail && libcxx/utils/ci/run-buildbot.sh x86_64-ubuntu-ubsan | libcxx/utils/ci/phabricator-report"
     agents:
       queue: "libcxx-builders"
 
   - label: "With LLVM's libunwind"
-    command: "set -o pipefail && libcxx/utils/ci/run-buildbot.sh x86_64-ubuntu-with_llvm_unwinder"
+    command: "set -o pipefail && libcxx/utils/ci/run-buildbot.sh x86_64-ubuntu-with_llvm_unwinder | libcxx/utils/ci/phabricator-report"
     agents:
       queue: "libcxx-builders"
 
   - label: "Single-threaded"
-    command: "set -o pipefail && libcxx/utils/ci/run-buildbot.sh x86_64-ubuntu-singlethreaded"
+    command: "set -o pipefail && libcxx/utils/ci/run-buildbot.sh x86_64-ubuntu-singlethreaded | libcxx/utils/ci/phabricator-report"
     agents:
       queue: "libcxx-builders"

libcxx/utils/ci/phabricator-report

 #!/usr/bin/env python3
 #===----------------------------------------------------------------------===##
 #
 # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 # See https://llvm.org/LICENSE.txt for license information.
 # SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 #
 #===----------------------------------------------------------------------===##
 
 import argparse
 import io
 import os
 import phabricator
 import re
+import socket
 import subprocess
 import sys
 import time
 
 LLVM_REVIEWS_API = "https://reviews.llvm.org/api/"
 
+def exponentialBackoffRetry(f, exception, maxAttempts=3):
+    """Tries calling a function, but retry with exponential backoff if the
+       function fails with the specified exception.
+    """
+    waitTime = 1
+    attempts = 0
+    while True:
+        try:
+            f()
+            break
+        except exception as e:
+            attempts += 1
+            if attempts == maxAttempts:
+                raise e
+            else:
+                time.sleep(waitTime)
+                waitTime *= 2
+
 def main(argv):
     parser = argparse.ArgumentParser(
         description="""
 This script gathers information about a Buildkite build and updates the
 Phabricator review associated to the HEAD commit with those results.
 
 The intended usage of this script is to pipe the output of a command defined
 in a Buildkite pipeline into it. The script will echo everything to stdout,
""")
     if not phabricatorID:
         raise RuntimeError('Could not find the Phabricator ID in the commit message. '
                            'The commit message was:\n{}'.format(commitMessage))
     else:
         phabricatorID = phabricatorID.group(1)
 
     token = os.environ['CONDUIT_TOKEN']
     phab = phabricator.Phabricator(token=token, host=LLVM_REVIEWS_API)
-    phab.harbormaster.sendmessage(buildTargetPHID=phabricatorID, type=result, unit=[resultObject])
+    exponentialBackoffRetry(
+        lambda: phab.harbormaster.sendmessage(buildTargetPHID=phabricatorID, type=result, unit=[resultObject]),
+        exception=socket.timeout
+    )
 
 if __name__ == '__main__':
     main(sys.argv[1:])