[GitHub] upgle opened a new pull request #3138: Add bash kind action

[GitBox <gi...@apache.org>]

upgle opened a new pull request #3138: Add bash kind action
URL: https://github.com/apache/incubator-openwhisk/pull/3138
 
 
   This is a new bash kind action. Related issue is #2927.
   
   bash action runtime is based on `openwhisk/dockerskeleton` and action proxy is overrided for bash script. also added jq to handle json in bash script
   
   ## How to use
   ```
   cat <<EOF > exec
   #!/bin/bash
   echo \$_test
   EOF
   ```
   It returns only the last line, supports auto boxing. (no need to make json object in script)
   
   ```
   $ wsk -i action update test exec --kind bash
   ok: updated action test
   $ wsk -i action invoke hello -r -p test "Hello World!"
   {
       "result": "Hello World!"
   }
   ```
   ## Using parameters easily
   The parameters are easy to use as environment variables in bash scripts. access parameters using environment variables is more intuitive and easier to use.
   
   [sungjunyoung/openwhisk-bashAction](https://github.com/sungjunyoung/openwhisk-bashAction), This is the repository in which it is implemented
   
   
   1. Object
   ```json
   {
     "key":{
       "key1":"value1",
       "key2":"value2"
     }
   }
   ```
   ```bash
   #!/bin/bash
   echo $_key_key1
   echo $_key_key2
   ```
   2. List
   ```
   {
     "key":[
       {"first":"value1"},
       {"second":"value2"}
     ]
   }
   ```
   ```bash
   #!/bin/bash
   echo $_key_0_first
   echo $_key_1_second
   ```
   
   3. also can be access theme using jq, jq is aleady installed.
   ```bash
   #!/bin/bash
   ARGS=$@
   A=`echo "$ARGS" | jq '."a"'`
   B=`echo "$ARGS" | jq '."b"'`
   C=`echo "$ARGS" | jq '."c"[0]'`
   RES=$(($B + $C))
   ```
   
   ## Testing
   ```
   ./gradlew tests:test --tests actionContainers.BashActionContainerTests
   ```
   
   

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