Support multiple runs of the action in the same job

README.md

@@ -93,12 +93,18 @@ Default `"v0.9.12"`.
 
 ## Outputs
 
+### plan
+
+If you have configured `plan_outputs` for **octodns**, PlanHtml or PlanMarkdown output will be written to `$GITHUB_WORKSPACE/octodns-sync.plan`.
+
+For convenience, this file is output by this action as the `plan` output if you need to use it in subsequent steps.
+
+### Log file
+
 `octodns-sync` will compare your configuration file to the configurations your providers have, and report any planned changes. The command logs this output in the workflow run log.
 
 That same output is saved to `$GITHUB_WORKSPACE/octodns-sync.log`.
 
-If you have configured `plan_outputs` for **octodns**, PlanHtml or PlanMarkdown output will be written to `$GITHUB_WORKSPACE/octodns-sync.plan`.
-
 ### Add pull request comment
 
 If you would like this action to add the `octodns-sync` plan to a pull request comment, configure `plan_outputs` in your **octodns** configuration, for example `public.yml`:

action.yml

@@ -25,6 +25,10 @@ inputs:
     description: 'Provide a token to use, if you set add_pr_comment to Yes.'
     required: true
     default: 'Not set'
+outputs:
+  plan:
+    description: 'Planned changes, if configured in octodns'
+    value: ${{ steps.run.outputs.plan}}
 
 runs:
   using: 'composite'

scripts/install.sh

@@ -3,11 +3,8 @@
 
 # Exit early if octodns is already installed
 if command -v octodns-sync; then
-  # Hello reader!
-  # This works as a cheap, relatively safe way to respond to #57
-  # If you'd like to improve it, please raise an issue or PR
-  echo "FAIL: It looks like octodns is already installed."
-  exit 1
+  echo "INFO: It looks like octodns is already installed."
+  exit 0
 fi
 
 # Set some variables

scripts/run.sh

@@ -8,6 +8,10 @@ _doit=$DOIT
 _logfile="${GITHUB_WORKSPACE}/octodns-sync.log"
 _planfile="${GITHUB_WORKSPACE}/octodns-sync.plan"
 
+echo "INFO: Cleaning up plan and log files if they already exist"
+rm -f "$_logfile"
+rm -f "$_planfile"
+
 echo "INFO: _config_path: ${_config_path}"
 if [ "${_doit}" = "--doit" ]; then
   script "${_logfile}" -e -c \
@@ -25,4 +29,13 @@ grep --quiet --fixed-strings --invert-match \
 '[COMMAND_EXIT_CODE="0"]'; then
   echo "FAIL: octodns-sync exited with an error."
   exit 1
-fi
+fi
+
+# https://github.community/t/set-output-truncates-multiline-strings/16852/4
+_plan="$(cat "$_planfile")"
+_plan="${_plan//'%'/'%25'}"
+_plan="${_plan//$'\n'/'%0A'}"
+_plan="${_plan//$'\r'/'%0D'}"
+
+# Output the plan file
+echo "::set-output name=plan::${_plan}"