mirror of
https://github.com/kennethreitz/heroku-buildpack-python.git
synced 2026-06-05 23:10:16 +00:00
Ed Morley
b74a41395e
Previously the buildpack's S3 bucket was defined in two places - once in `VENDOR_URL` and again during the pip installation step. This duplication was necessary since `VENDOR_URL` also contained the stack's name, whereas the pip use-case used a non-stack-specific S3 key prefix. In order to: * reduce this duplication * simplify this buildpack's S3 bucket migration (where we'll soon be needing the vary the bucket name and wouldn't want to have to duplicate that logic in multiple places) * allow overriding of the URL for the pip use-case ...the `VENDOR_URL` variable has been replaced with `S3_BASE_URL` which no longer contains the stack name. The user-configurable override has similarly been renamed from `BUILDPACK_VENDOR_URL` to `BUILDPACK_S3_BASE_URL`. Note: As before, this override cannot be set via standard app variables (see #989). The unused `USE_STAGING_BINARIES` environment variable has been removed, since it's a leftover from the project to stand up a staging S3 bucket. It's redundant given the `BUILDPACK_S3_BASE_URL` variable. Closes @W-8142401@.
38 lines
1.2 KiB
Bash
Executable File
38 lines
1.2 KiB
Bash
Executable File
#!/usr/bin/env bash
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# This script serves as the Pylibmc build step of the
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# [**Python Buildpack**](https://github.com/heroku/heroku-buildpack-python)
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# compiler.
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#
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# A [buildpack](https://devcenter.heroku.com/articles/buildpacks) is an
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# adapter between a Python application and Heroku's runtime.
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#
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# This script is invoked by [`bin/compile`](/).
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if [[ "$STACK" != "cedar-14" ]]; then
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# libmemcached is pre-installed in the stack image so there is no need to vendor it.
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return 0
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fi
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# The location of the pre-compiled libmemcached binary.
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VENDORED_MEMCACHED="${S3_BASE_URL}/${STACK}/libraries/vendor/libmemcache.tar.gz"
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# Syntax sugar.
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# shellcheck source=bin/utils
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source "$BIN_DIR/utils"
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# If pylibmc exists within requirements, use vendored libmemcached.
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if (pip-grep -s requirements.txt pylibmc &> /dev/null) then
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if [ ! -d ".heroku/vendor/lib/sasl2" ]; then
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echo "-----> Noticed pylibmc. Bootstrapping libmemcached."
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mkdir -p .heroku/vendor
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# Download and extract libmemcached into target vendor directory.
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curl "$VENDORED_MEMCACHED" -s | tar zxv -C .heroku/vendor &> /dev/null
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mcount "steps.vendor.pylibmc"
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fi
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LIBMEMCACHED=$(pwd)/vendor
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export LIBMEMCACHED
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fi
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