bazel: Migrate py_proto_library to @com_github_grpc_grpc
#30834
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Signed-off-by: Sergii Tkachenko <[email protected]>
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| version = "83c031ea693357fdf7a7fea9a68a785d97864a38", | ||
| sha256 = "35bdcdbcd2e437058ad1f74a91b49525339b028a6b52760ab019fd9efa5a6d44", |
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Note: this will be updated once cncf/xds#74 is merged.
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py_proto_library provided by @com_google_protobuf//:protobuf.bzl has been deprecated for a while now: This is provided for backwards compatibility only. Bazel 5.3 will introduce support for py_proto_library, which should be used instead. https://github.com/protocolbuffers/protobuf/blob/32af7d211b85f71920acdfa9b796db008f8c2a45/protobuf.bzl#L642-L644 However, native py_proto_library has never been provided, see bazelbuild/bazel#3935. Instead @rules_python//python:proto.bzl is recommended. I attempted switching to this library, but it's not compatible with @com_google_googleapis's py_proto_library targets, see #69. I found a hacky workaround by using cc_proto_library to generate python targets, but downstream integration into Envoy failed (envoyproxy/envoy#30159). This PR migrates py_proto_library implementation to to @com_github_grpc_grpc. This implementation is used by @com_google_googleapis's, and, more importantly, uses bazel aspects. Which decouples cncf/xds and Envoy's dependencies from concrete upstream py_proto_library implementations. This resulted in a significant code improvement of bazel/api_build_system.bzl: No more custom @com_google_googleapis dependency mapping needed via py_proto_library rules override. No more hardcoded dependencies _xds_py_proto_library - proto dependency tree is determined from proto_library definitions via Basel aspects. No more EXTERNAL_PROTO_PY_BAZEL_DEP_MAP dependency map needed - for the same reason. Similar work in Envoy: envoyproxy/envoy#30834. Signed-off-by: Sergii Tkachenko <[email protected]>
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Hey @yanavlasov - we needed to merge cncf/xds first: #30834 (comment). |
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py_proto_libraryprovided by@com_google_protobuf//:protobuf.bzlhas been deprecated for a while now:However, native
py_proto_libraryhas never been provided, see bazelbuild/bazel#3935. Instead@rules_python//python:proto.bzlis recommended. I attempted switching to this library, but it's not compatible with@com_google_googleapis's py_proto_library targets, see cncf/xds#69. I found a hacky workaround by usingcc_proto_libraryto generate python targets, but downstream integration into Envoy failed (#30159).This PR migrates
py_proto_libraryimplementation to to@com_github_grpc_grpc. This implementation is used by@com_google_googleapis's, and, more importantly, uses bazel aspects. Which decouples cncf/xds and Envoy's dependencies from concrete upstream py_proto_library implementations.This resulted in a significant code improvement of
bazel/api_build_system.bzl:@com_google_googleapisdependency mapping needed viapy_proto_libraryrules override._xds_py_proto_library- proto dependency tree is determined fromproto_librarydefinitions via Basel aspects.EXTERNAL_PROTO_PY_BAZEL_DEP_MAPdependency map needed - for the same reason.Related PR in cncf/xds: cncf/xds#74.
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Risk Level: Low
Testing: do_ci.sh
Docs Changes: no
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