50 lines
1.2 KiB
Bash
Executable File
50 lines
1.2 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Usage: cached-bundle install --deployment
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#
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# After running `bundle`, caches the `vendor/bundle` directory to S3.
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# On the next run, restores the cached directory before running `bundle`.
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# When `Gemfile.lock` changes, the cache gets rebuilt.
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#
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# Requirements:
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# - Gemfile.lock
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# - TRAVIS_REPO_SLUG
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# - TRAVIS_RUBY_VERSION
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# - AMAZON_S3_BUCKET
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# - script/s3-put
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# - bundle
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# - curl
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#
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# Author: Mislav Marohnić
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set -e
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compute_md5() {
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local output="$(openssl md5)"
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echo "${output##* }"
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}
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download() {
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curl --tcp-nodelay -qsfL "$1" -o "$2"
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}
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gemfile="${BUNDLE_GEMFILE:-Gemfile}"
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bundle_fullpath="$(dirname $gemfile)/vendor/bundle"
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bundle_path=${bundle_fullpath#$PWD/}
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gemfile_hash="$(compute_md5 <"${gemfile}.lock")"
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cache_name="${TRAVIS_RUBY_VERSION}-${gemfile_hash}.tgz"
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fetch_url="http://${AMAZON_S3_BUCKET}.s3.amazonaws.com/${TRAVIS_REPO_SLUG}/${cache_name}"
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if download "$fetch_url" "$cache_name"; then
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echo "Reusing cached bundle ${cache_name}"
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tar xzf "$cache_name"
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fi
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bundle "$@"
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if [ ! -f "$cache_name" ] && [ -n "$AMAZON_SECRET_ACCESS_KEY" ]; then
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echo "Caching \`${bundle_path}' to S3"
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tar czf "$cache_name" "$bundle_path"
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script/s3-put "$cache_name" "${AMAZON_S3_BUCKET}:${TRAVIS_REPO_SLUG}/${cache_name}"
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fi
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