add travis_after_all to ensure that gem is only published if all buil…

…ds succeed

.travis.yml

@@ -9,11 +9,41 @@ rvm:
   - 2.0.0
   - 2.1.5
   - 2.2.2
-script:
-  - bundle exec rake ci
 deploy:
   provider: rubygems
   api_key:
     secure: "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"
   on:
     tags: true
+    condition: $SAFE_TO_DEPLOY = "true"
+    branch: master
+
+# all this travis_after_all nonsense is a hack to ensure that travis only publishes to rubygems after *all* builds pass, not just the first one
+script:
+  - curl -o travis_after_all.py https://raw.githubusercontent.com/dmakhno/travis_after_all/5acf1b8d164e7da313f72a8634bdd95182f890f5/travis_after_all.py
+  - bundle exec rake ci
+after_success:
+  - python travis_after_all.py
+  - export $(cat .to_export_back)
+  - |
+      if [ "$BUILD_LEADER" = "YES" ]; then
+        if [ "$BUILD_AGGREGATE_STATUS" = "others_succeeded" ]; then
+          echo "All Succeded! PUBLISHING..."
+          export SAFE_TO_DEPLOY = "true"
+        else
+          echo "Some Failed"
+        fi
+      fi
+after_failure:
+  - python travis_after_all.py
+  - export $(cat .to_export_back)
+  - |
+      if [ "$BUILD_LEADER" = "YES" ]; then
+        if [ "$BUILD_AGGREGATE_STATUS" = "others_failed" ]; then
+          echo "All Failed"
+        else
+          echo "Some Failed"
+        fi
+      fi
+after_script:
+  - echo leader=$BUILD_LEADER status=$BUILD_AGGREGATE_STATUS