[MRG] Configures Travis CI to fail fast (#13218)

thomasjpfan · ogrisel · commit d19a5dcb0444 · 2019-02-22T09:03:05.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -27,6 +27,13 @@ matrix:
       language: generic
       if: type != cron
       os: osx
+      addons:
+        homebrew:
+          packages:
+            # For travis_fastfail.sh
+            - jq
+            # install OpenMP not present by default on osx
+            - libomp
     # Linux environment to test that scikit-learn can be built against
     # versions of numpy, scipy with ATLAS that comes with Ubuntu Xenial 16.04
     # i.e. numpy 1.11 and scipy 0.17
@@ -66,7 +73,7 @@ matrix:
        if: type = cron OR commit_message =~ /\[scipy-dev\]/
 
 install: source build_tools/travis/install.sh
-script: 
+script:
   - bash build_tools/travis/test_script.sh
   - bash build_tools/travis/test_docs.sh
   - bash build_tools/travis/test_pytest_soft_dependency.sh
diff --git a/build_tools/travis/install.sh b/build_tools/travis/install.sh
@@ -13,6 +13,9 @@
 
 set -e
 
+# Fail fast
+build_tools/travis/travis_fastfail.sh
+
 echo 'List files from cached directories'
 echo 'pip:'
 ls $HOME/.cache/pip
@@ -27,9 +30,6 @@ then
 	ccache --max-size 100M --show-stats
 elif [ $TRAVIS_OS_NAME = "osx" ]
 then
-    # install OpenMP not present by default on osx
-    brew install libomp
-
     # enable OpenMP support for Apple-clang
     export CC=/usr/bin/clang
     export CXX=/usr/bin/clang++
@@ -149,3 +149,6 @@ then
 fi
 # Useful for debugging how ccache is used
 # cat $CCACHE_LOGFILE
+
+# fast fail
+build_tools/travis/travis_fastfail.sh
diff --git a/build_tools/travis/travis_fastfail.sh b/build_tools/travis/travis_fastfail.sh
@@ -0,0 +1,28 @@
+#!/bin/sh
+# This file is a part of Julia. License is MIT: https://julialang.org/license
+
+curlhdr="Accept: application/vnd.travis-ci.2+json"
+endpoint="https://api.travis-ci.org/repos/$TRAVIS_REPO_SLUG"
+
+# Fail fast for superseded builds to PR's
+if [ "$TRAVIS_PULL_REQUEST" != "false" ]; then
+  newestbuildforthisPR=$(curl -H "$curlhdr" $endpoint/builds?event_type=pull_request | \
+      jq ".builds | map(select(.pull_request_number == $TRAVIS_PULL_REQUEST))[0].number")
+  if [ $newestbuildforthisPR != null -a $newestbuildforthisPR != \"$TRAVIS_BUILD_NUMBER\" ]; then
+    echo "There are newer queued builds for this pull request, failing early."
+    exit 1
+  fi
+else
+  # And for non-latest push builds in branches other than master or release*
+  case $TRAVIS_BRANCH in
+    master | release*)
+      ;;
+    *)
+      if [ \"$TRAVIS_BUILD_NUMBER\" != $(curl -H "$curlhdr" \
+          $endpoint/branches/$TRAVIS_BRANCH | jq ".branch.number") ]; then
+        echo "There are newer queued builds for this branch, failing early."
+        exit 1
+      fi
+      ;;
+  esac
+fi
