Consolidate steps, and make reporting less verbose.

README.md

@@ -25,7 +25,7 @@ Create a workflow `.yml` file in your repositories `.github/workflows` directory
 ### Outputs
 
 * `cache-hit` - A boolean value to indicate a cache was found for the packages requested.
-* `package_version_list` - The packages and versions that are installed as a comma delimited list with colon delimit on the package version (i.e. \<package1>:<version1\>,\<package2>:\<version2>,...).
+* `package-version-list` - The packages and versions that are installed as a comma delimited list with colon delimit on the package version (i.e. \<package1>:<version1\>,\<package2>:\<version2>,...).
   
 
 ### Cache scopes

action.yml

@@ -25,44 +25,27 @@ outputs:
     # This compound expression is needed because lhs can be empty.
     # Need to output true and false instead of true and nothing.
     value: ${{ steps.load-cache.outputs.cache-hit || false }}
-  package_version_list:
+  package-version-list:
     description: 'The packages and versions that are installed as a comma delimited list with colon delimit on the package version (i.e. <package>:<version,<package>:<version>).'
-    value: ${{ steps.get-package-versions.outputs.package_version_list }}
+    value: ${{ steps.post-cache.outputs.package-version-list }}
 
 runs:
   using: "composite"
   steps:
-    - name: Validate Packages
+    - id: pre-cache
-      run: ${{ github.action_path }}/validate_pkgs.sh "${{ inputs.version }}" ${{ inputs.packages }}
-      shell: bash
-
-    - name: Create Cache Key
       run: |
-        ${{ github.action_path }}/create_cache_key.sh "${{ inputs.version }})" ${{ inputs.packages }}
+        ${{ github.action_path }}/pre_cache_action.sh ~/cache-apt-pkgs "${{ inputs.version }}" ${{ inputs.packages }}
+        echo "CACHE_KEY=$(cat ~/cache-apt-pkgs/cache_key.md5)" >> $GITHUB_ENV
       shell: bash
 
-    - name: Load Package Cache
+    - id: load-cache
-      id: load-cache
       uses: actions/cache@v2
       with:
         path: ~/cache-apt-pkgs
         key: cache-apt-pkgs_${{ env.CACHE_KEY }}
 
-    - name: Load Packages      
+    - id: post-cache
       run: |      
-        if [ ! ${{ steps.load-cache.outputs.cache-hit }} ] || [ ${{ inputs.refresh }} ]; then
+        ${{ github.action_path }}/pre_cache_action.sh ~/cache-apt-pkgs "${{ inputs.version }}" ${{ inputs.packages }}
-          ${{ github.action_path }}/install_and_cache_pkgs.sh ~/cache-apt-pkgs ${{ inputs.packages }}
+        echo "::set-output name=package-version-list::$(cat ~/cache-apt-pkgs/manifest.log)"
-        else
-          ${{ github.action_path }}/restore_pkgs.sh ~/cache-apt-pkgs /          
-        fi
-      shell: bash
-
-    - name: Get Package Versions
-      id: get-package-versions
-      run: |
-        output=
-        for package in ${{ inputs.packages }}; do
-          output=$output,$package:$(dpkg -s $package | grep Version | awk '{print $2}')
-        done
-        echo '::set-output name=package_version_list::output'
       shell: bash

create_cache_key.sh

@@ -1,23 +0,0 @@
-#!/bin/bash
-
-# Fail on any error.
-set -e
-
-version=$1
-packages=${@:2}
-
-echo "::group::Create Cache Key"
-
-# Remove package delimiters, sort (requires newline) and then convert back to inline list.
-normalized_list=$(echo $packages | sed 's/[\s,]+/ /g' | tr ' ' '\n' | sort | tr '\n' ' ')
-echo "::debug::Normalized package list is '$normalized_list'."
-
-value=$(echo $normalized_list @ $version)
-echo "::debug::Value to hash is '$value'."
-
-key=$(echo $value | md5sum | /bin/cut -f1 -d' ')
-echo "::debug::Value hashed as '$key'."
-
-echo "::endgroup::"
-
-echo "CACHE_KEY=$key" >> $GITHUB_ENV

install_and_cache_pkgs.sh

@@ -5,39 +5,39 @@ set -e
 
 # Directory that holds the cached packages.
 cache_dir=$1
+
 # List of the packages to use.
 packages="${@:2}"
 
 package_count=$(echo $packages | wc -w)
-echo "::debug::Clean installing $package_count packages..."
+echo "Clean installing and caching $package_count package(s).\n"
+echo "Package list:"
 for package in $packages; do
-  echo "::debug::- $package"
+  echo "- $package"
 done
-echo "::endgroup::"
+echo ""
 
 mkdir -p $cache_dir
 
-echo "::group::Update APT Package List"
+echo -n "Updating APT package list..."
-sudo apt-get update
+sudo apt-get update > /dev/null
-echo "::endgroup::"
+echo "done."
 
 for package in $packages; do
   cache_filepath=$cache_dir/$package.tar.gz
 
-  echo "::group::Clean install $package"
+  echo -n "Clean installing $package..."
-  sudo apt-get --yes install $package  
+  sudo apt-get --yes install $package > /dev/null
-  echo "::endgroup::"
+  echo "done."
 
-  echo "::group::Caching $package to $cache_filepath"
+  echo -n "Caching $package to $cache_filepath..."
   # Pipe all package files (no folders) to Tar.
   dpkg -L $package |
     while IFS= read -r f; do     
-      if test -f $f; then echo $f; fi;
+      if test -f $f; then echo ${f:1}; fi;  #${f:1} removes the leading slash that Tar disallows
     done | 
     xargs tar -czf $cache_filepath -C /    
-  echo "::endgroup::"
+  echo "done."
 done
 
-echo "::group::Finished"
+echo "$(echo $packages | wc -w) package(s) installed and cached."
-echo "::debug::$(echo $packages | wc -w) package(s) installed and cached."
-echo "::endgroup::"

post_cache_action.sh

@@ -0,0 +1,41 @@
+#!/bin/bash
+
+# Fail on any error.
+set -e
+
+# Directory that holds the cached packages.
+cache_dir=$1
+
+# Root directory to untar the cached packages to.
+# Typically filesystem root '/' but can be changed for testing.
+cache_restore_root=$2
+
+# Indicates that the cache was found.
+cache_hit=$3
+
+# Indicates that a refresh of the packages in the cache is required.
+refresh=$4
+
+# List of the packages to use.
+packages="${@:5}"
+
+if [ ! $cache_hit ] || [ $refresh ]; then
+  ./install_and_cache_pkgs.sh ~/cache-apt-pkgs $packages
+else
+  ./restore_pkgs.sh ~/cache-apt-pkgs $cache_restore_root
+fi
+echo ""
+
+echo "Creating package manifest..."
+manifest=
+for package in $packages; do
+  item=$package:$(dpkg -s $package | grep Version | awk '{print $2}')
+  echo "- $item"
+  manifest=$manifest$item,
+done
+# Remove trailing comma.
+manifest=${manifest:0:-1}
+
+manifest_filepath="$cache_dir/manifest.log"
+echo $manifest > $manifest_filepath
+echo "Manifest written to $manifest_filepath"

pre_cache_action.sh

@@ -0,0 +1,56 @@
+#!/bin/bash
+
+# Directory that holds the cached packages.
+cache_dir=$1
+
+# Version of the cache to create or load.
+version=$2
+
+# List of the packages to use.
+packages=${@:3}
+
+echo -n "Validating action arguments (version='$version', packages='$packages')...";
+echo $version | grep -o " " > /dev/null
+if [ $? -eq 0 ]; then
+  echo "aborted." 
+  echo "Version value '$version' cannot contain spaces." >&2
+  exit 1
+fi
+if [ "$packages" == "" ]; then
+  echo "aborted." 
+  echo "Packages argument cannot be empty." >&2
+  exit 2
+fi
+echo "done."
+
+echo -n "Verifying packages..."
+for package in $packages; do
+  apt-cache search ^$package$ | grep $package > /dev/null
+  if [ $? -ne 0 ]; then
+    echo "aborted."
+    echo "Package '$package' not found." >&2
+    exit 3
+  fi
+done
+echo "done."
+
+# Abort on any failure at this point.
+set -e
+
+echo "Creating cache key..."
+
+# Remove package delimiters, sort (requires newline) and then convert back to inline list.
+normalized_list=$(echo $packages | sed 's/[\s,]+/ /g' | tr ' ' '\n' | sort | tr '\n' ' ')
+echo "- Normalized package list is '$normalized_list'."
+
+value=$(echo $normalized_list @ $version)
+echo "- Value to hash is '$value'."
+
+key=$(echo $value | md5sum | /bin/cut -f1 -d' ')
+echo "- Value hashed as '$key'."
+
+echo "done."
+
+key_filepath="$cache_dir/cache_key.md5"
+echo $key > $key_filepath
+echo "Hash value written to $key_filepath"

restore_pkgs.sh

@@ -5,29 +5,27 @@ set -e
 
 # Directory that holds the cached packages.
 cache_dir=$1
+
 # Root directory to untar the cached packages to.
 # Typically filesystem root '/' but can be changed for testing.
 cache_restore_root=$2
+
 # List of the packages to use.
 packages="${@:3}"
 
 cache_filenames=$(ls -1 $cache_dir | sort)
 cache_filename_count=$(echo $cache_filenames | wc -w)
 
-echo "::group::Found $cache_filename_count files in cache."
+echo "Found $cache_filename_count packages in cache."
 for cache_filename in $cache_filenames; do
-  echo "::debug::$cache_filename"
+  echo "- $cache_filename"
 done
-echo "::endgroup::"
 
-echo "::group::Package Restore"
+echo "Restoring cached packages..."
 for package in $packages; do
   cache_filepath=$cache_dir/$package.tar.gz
-  echo "::debug::Restoring package $package ($cache_filepath) from cache... "
+  echo "- $package ($cache_filepath)"
-  sudo tar -xf $cache_filepath -C $cache_restore_root
+  sudo tar -xf $cache_filepath -C $cache_restore_root > /dev/null
 done
-echo "::endgroup::"
 
-echo "::group::Finished"
+echo "$cache_filename_count package(s) restored."
-echo "::debug::Action complete. $cache_filename_count package(s) restored."
-echo "::endgroup::"

validate_pkgs.sh

@@ -1,29 +0,0 @@
-#!/bin/bash
-
-version=$1
-packages=${@:2}
-
-echo "::group::Validate Action Arguments";
-
-echo $version | grep -o " " > /dev/null
-if [ $? -eq 0 ]; then
-  echo "::error::Aborted. Version value '$version' cannot contain spaces." >&2
-  exit 1
-fi
-echo "::debug::Version '$version' is valid."
-
-if [ "$packages" == "" ]; then
-  echo "::error::Aborted. Packages argument cannot be empty." >&2
-  exit 2
-fi
-
-for package in $packages; do
-  apt-cache search ^$package$ | grep $package > /dev/null
-  if [ $? -ne 0 ]; then
-    echo "::error::Aborted. Package '$package' not found." >&2
-    exit 3
-  fi
-done
-echo "::debug::Packages '$packages' are valid."
-
-echo "::endgroup::"