Set up automated retry (#1714)

Summary:
Circle occasionally fails with a network error in one of the Android dependencies. This uses a simple retry to alleviate the need to manually restart the tasks.

Pull Request resolved: https://github.com/facebook/flipper/pull/1714

Test Plan: Ran this on my private fork: https://app.circleci.com/pipelines/github/passy/flipper-1/9/workflows/e1b40086-1dce-49eb-a178-81052145ed0f

Reviewed By: nikoant

Differential Revision: D25170790

Pulled By: passy

fbshipit-source-id: 220759fb227855eac807d64f41c78f5781599515

.circleci/config.yml

@@ -14,20 +14,28 @@ jobs:
     executor: default-executor
     steps:
       - checkout
+      - run:
+          name: install retry
+          command: scripts/install-retry.sh
       - run:
           name: build and deploy
           command: |
             yes | sdkmanager "platforms;android-27" || true
-            ./gradlew :android:assembleRelease && scripts/publish-android-snapshot.sh
+            /tmp/retry -m 3 ./gradlew :android:assembleRelease
+            /tmp/retry -m 3 scripts/publish-android-snapshot.sh
   release:
     executor: default-executor
     steps:
       - checkout
+      - run:
+          name: install retry
+          command: scripts/install-retry.sh
       - run:
           name: build and deploy
           command: |
             yes | sdkmanager "platforms;android-27" || true
-            ./gradlew :android:assembleRelease && scripts/publish-android-release.sh
+            /tmp/retry -m 3 ./gradlew :android:assembleRelease
+            /tmp/retry -m 3 scripts/publish-android-release.sh
 workflows:
   version: 2
   build-and-deploy:

scripts/install-retry.sh

@@ -0,0 +1,16 @@
+#!/bin/bash -xe
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+# try to install with wget
+command -v wget &>/dev/null && wget -O /tmp/retry "https://github.com/moul/retry/releases/download/v0.5.0/retry_$(uname -s)_$(uname -m)" || true
+
+# try to install with curl
+if [ ! -f /tmp/retry ]; then
+  command -v curl &>/dev/null && curl -L -o /tmp/retry "https://github.com/moul/retry/releases/download/v0.5.0/retry_$(uname -s)_$(uname -m)"
+fi
+
+chmod +x /tmp/retry
+/tmp/retry --version