Update ci example run script (#162)

* Update ci example run script

updates the bazel path to these actions

* update config

* more updates

* set workspace

* add set flags

* update args

* safer parsing of impacted targets

Author: tinder-maxwellelliott

.github/workflows/ci.yaml

@@ -55,7 +55,7 @@ jobs:
         with:
           fetch-depth: 0
       - name: Run bazel-diff example script
-        run: USE_BAZEL_VERSION=latest ./bazel-diff-example.sh $(pwd) bazel $(git rev-parse HEAD~1) $(git rev-parse HEAD)
+        run: USE_BAZEL_VERSION=latest ./bazel-diff-example.sh "$GITHUB_WORKSPACE" ~/go/bin/bazelisk $(git rev-parse HEAD~1) $(git rev-parse HEAD)
   test-jre11:
     runs-on: ubuntu-latest
     steps:
@@ -103,7 +103,7 @@ jobs:
         with:
           fetch-depth: 0
       - name: Run bazel-diff example script
-        run: USE_BAZEL_VERSION=latest ./bazel-diff-example.sh $(pwd) bazel $(git rev-parse HEAD~1) $(git rev-parse HEAD)
+        run: USE_BAZEL_VERSION=latest ./bazel-diff-example.sh "$GITHUB_WORKSPACE" ~/go/bin/bazelisk $(git rev-parse HEAD~1) $(git rev-parse HEAD)
   deploy:
     needs: [test-jre8, test-jre11]
     runs-on: ubuntu-latest

bazel-diff-example.sh

@@ -1,5 +1,7 @@
 #!/bin/bash
 
+set -ex
+
 # Path to your Bazel WORKSPACE directory
 workspace_path=$1
 # Path to your Bazel executable
@@ -14,27 +16,23 @@ final_hashes_json="/tmp/final_hashes.json"
 impacted_targets_path="/tmp/impacted_targets.txt"
 bazel_diff="/tmp/bazel_diff"
 
-shared_flags=""
-
-# Uncomment the line below to see debug information
-# shared_flags="--config=verbose"
-
-"$bazel_path" run :bazel-diff "$shared_flags" --script_path="$bazel_diff"
+"$bazel_path" run :bazel-diff --script_path="$bazel_diff"
 
 git -C "$workspace_path" checkout "$previous_revision" --quiet
 
 echo "Generating Hashes for Revision '$previous_revision'"
 $bazel_diff generate-hashes -w "$workspace_path" -b "$bazel_path" $starting_hashes_json
 
-git -C "$workspace_path" checkout $final_revision --quiet
+git -C "$workspace_path" checkout "$final_revision" --quiet
 
 echo "Generating Hashes for Revision '$final_revision'"
 $bazel_diff generate-hashes -w "$workspace_path" -b "$bazel_path" $final_hashes_json
 
 echo "Determining Impacted Targets"
 $bazel_diff get-impacted-targets -sh $starting_hashes_json -fh $final_hashes_json -o $impacted_targets_path
 
-IFS=$'\n' read -d '' -r -a impacted_targets < $impacted_targets_path
+impacted_targets=()
+IFS=$'\n' read -d '' -r -a impacted_targets < $impacted_targets_path || true
 formatted_impacted_targets=$(IFS=$'\n'; echo "${impacted_targets[*]}")
 echo "Impacted Targets between $previous_revision and $final_revision:"
 echo "$formatted_impacted_targets"