This is liable to change in the future.An
http_file()rule is used to download files from the Internet to be used as dependencies for other rules. This rule only downloads single files, and can optionally make them executable (see
executable) These rules are downloaded by running
buck fetch, or can be downloaded as part of
buck buildby setting
A list of urls to attempt to download from. They are tried in order, and subsequent ones are only tried if the download fails. If validation fails, a new URL is not used. Supported protocols are "http", "https", and "mvn".
SHA-256hash of the downloaded artifact. Buck verifies this is correct and fails the fetch command if it doesn't match in order to guarantee repeatable builds.
An optional name to call the downloaded artifact. Buck will generate a default name if one is not provided that uses the
nameof the rule.
List of build target patterns that identify the build rules that can include this rule as a dependency, for example, by listing it in their
exported_depsattributes. For more information, see visibility.
http_file(), third party packages can be downloaded from an
https URL and used in java libraries.
http_file( name = 'guava-23-bin', urls = [ 'http://search.maven.org/remotecontent?filepath=com/google/guava/guava/23.0/guava-23.0.jar', ], sha256 = '7baa80df284117e5b945b19b98d367a85ea7b7801bd358ff657946c3bd1b6596', ) http_file( name = 'guava-23-sources', urls = [ 'http://search.maven.org/remotecontent?filepath=com/google/guava/guava/23.0/guava-23.0-sources.jar', ], sha256 = '37fe8ba804fb3898c3c8f0cbac319cc9daa58400e5f0226a380ac94fb2c3ca14', ) prebuilt_java_library( name = 'guava-23', binary_jar = ':guava-23-bin', source_jar = ':guava-23-source', )
Tooling can also be fetched with
http_file() and used by a
genrule( name="my-thrift-lib-cpp2", cmd="$(exe :thrift-compiler-bin) --gen cpp2 -o $OUT $(location //:thrift-file)", out="gen-cpp2", ) http_file( name = 'thrift-compiler-bin', url = 'https://internal-mirror.example.com/bin/thrift-compiler', sha256 = 'c24932ccabb66fffb2d7122298f7f1f91e0b1f14e05168e3036333f84bdf58dc', )
Here's an example of a
http_file() using a mvn URI which uses a Maven classifier.
http_file( name = 'guava-23-bin', urls = [ 'mvn:com.google.guava:guava:jar:23.0', ], sha256 = '7baa80df284117e5b945b19b98d367a85ea7b7801bd358ff657946c3bd1b6596', )