Added additional parameters to support --ext-str options in `jsonne…

…t`. (#1)

.github/workflows/examples.yml

@@ -14,6 +14,7 @@ jobs:
         id: jsonnet
         with:
           file: 'test/example.jsonnet'
+          params: 'test=true,env=stag'
   render_jsonnet_to_single_file:
     runs-on: ubuntu-latest
     name: Write rendered result to file
@@ -40,5 +41,6 @@ jobs:
         with:
           file: 'test/example.jsonnet'
           output_dir: test/multi-file-output/
+          params: 'test=true dryrun=false;env=prod'
       - name: Validation
         run: diff test/multi-file-output/person1 test/person1

README.md

@@ -14,6 +14,7 @@ and combine them with another GitHub action to:
 * `output_file` - when set, writes the STDOUT from Jsonnet invocation to $output-file. OPTIONAL
 * `output_dir` - when set, appends `-m $output_dir` to the Jsonnet invocation to render multiple output files to a single directory. OPTIONAL
 * `plaintext` - when set to any value, Jsonnet is invoked with the `-S` flag to emit plaintext rather than JSON-encoded output.
+* `params` - specify external `--ext-str` arguments. `dryrun=true env=prod` becomes `--ext-str dryrun=true --ext-str env=prod`. Use either of comma, space or semicolon as argument separator. OPTIONAL
 
 ## Output
 
@@ -40,6 +41,7 @@ steps:
     with:
       file: path/to/file.jsonnet
       output_file: output/file.json
+      params: dryrun=true env=prod
 ```
 
 ### Render multiple files in a single directory
@@ -51,4 +53,5 @@ steps:
     with:
       file: path/to/file.jsonnet
       output_dir: output/
+      params: dryrun=true;env=prod
 ```

action.yml

@@ -24,6 +24,12 @@ inputs:
       When set to `true`, invokes Jsonnet with the `-S` flag to print the output
       verbatim rather than encoded as JSON
     required: false
+  params:
+    description: |
+      Pass arguments to `jsonnet` that get mapped to `--ext-str` arguments. 
+      `dryrun=true env=prod` becomes `--ext-str dryrun=true --ext-str env=prod`. 
+      Use either of comma, space or semicolon as argument separator.
+    required: false
 runs:
   using: 'docker'
   image: 'Dockerfile'
@@ -32,3 +38,4 @@ runs:
     - ${{ inputs.output_dir }}
     - ${{ inputs.output_file }}
     - ${{ inputs.plaintext }}
+    - ${{ inputs.params }}

entrypoint.sh

@@ -20,12 +20,24 @@ else
   PLAINTEXT_ARG="-S"
 fi
 
+if [ -z "$INPUT_PARAMS" ]
+then
+  EXTERNAL_PARAMS_ARG=""
+else
+  INPUT_PARAMS=$(echo $INPUT_PARAMS | sed 's/[,;]/ /g')
+  EXTERNAL_PARAMS_ARG=""
+  for PARAM in $INPUT_PARAMS
+  do
+    EXTERNAL_PARAMS_ARG="$EXTERNAL_PARAMS_ARG --ext-str $PARAM"
+  done
+fi
+
 if [ -z "$INPUT_OUTPUT_FILE" ]
 then
   echo "Running jsonnet $OUTPUT_DIR_ARG $PLAINTEXT_ARG $INPUT_FILE"
-  jsonnet $OUTPUT_DIR_ARG $PLAINTEXT_ARG $INPUT_FILE
+  jsonnet $EXTERNAL_PARAMS_ARG $OUTPUT_DIR_ARG $PLAINTEXT_ARG $INPUT_FILE
 else
   echo "Running jsonnet $OUTPUT_DIR_ARG $PLAINTEXT_ARG $INPUT_FILE > $INPUT_OUTPUT_FILE"
-  OUTPUT=$(jsonnet $OUTPUT_DIR_ARG $PLAINTEXT_ARG $INPUT_FILE)
+  OUTPUT=$(jsonnet $EXTERNAL_PARAMS_ARG $OUTPUT_DIR_ARG $PLAINTEXT_ARG $INPUT_FILE)
   echo "$OUTPUT" > $INPUT_OUTPUT_FILE
 fi