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129 lines
4.8 KiB
Makefile
Vendored
129 lines
4.8 KiB
Makefile
Vendored
# -*- mode: makefile; -*-
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# Copyright The OpenTelemetry Authors
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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# This Makefile.protos has rules to generate go code for otlp
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# exporter. It does it by copying the proto files from
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# `exporters/otlp/internal/opentelemetry-proto` (which is a
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# submodule that needs to be checked out) into `gen/proto`, changing
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# the go_package option to a valid string, generating the go files and
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# finally copying the files into the module. The files are not
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# generated in place, because protoc generates a too-deep directory
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# structure.
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#
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# Currently, all the generated code is in
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# `exporters/otlp/internal/opentelemetry-proto-gen`.
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#
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# Prereqs: wget (for downloading the zip file with protoc binary),
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# unzip (for unpacking the archive), rsync (for copying back the
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# generated files).
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PROTOC_VERSION := 3.14.0
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TOOLS_DIR := $(abspath ./.tools)
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TOOLS_MOD_DIR := ./internal/tools
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PROTOBUF_VERSION := v1
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OTEL_PROTO_SUBMODULE := exporters/otlp/internal/opentelemetry-proto
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GEN_TEMP_DIR := gen
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SUBMODULE_PROTO_FILES := $(wildcard $(OTEL_PROTO_SUBMODULE)/opentelemetry/proto/*/$(PROTOBUF_VERSION)/*.proto) $(wildcard $(OTEL_PROTO_SUBMODULE)/opentelemetry/proto/collector/*/$(PROTOBUF_VERSION)/*.proto)
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ifeq ($(strip $(SUBMODULE_PROTO_FILES)),)
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$(error Submodule at $(OTEL_PROTO_SUBMODULE) is not checked out, use "git submodule update --init")
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endif
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PROTOBUF_GEN_DIR := exporters/otlp/internal/opentelemetry-proto-gen
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PROTOBUF_TEMP_DIR := $(GEN_TEMP_DIR)/pb-go
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PROTO_SOURCE_DIR := $(GEN_TEMP_DIR)/proto
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SOURCE_PROTO_FILES := $(subst $(OTEL_PROTO_SUBMODULE),$(PROTO_SOURCE_DIR),$(SUBMODULE_PROTO_FILES))
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.DEFAULT_GOAL := protobuf
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UNAME_S := $(shell uname -s)
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UNAME_M := $(shell uname -m)
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ifeq ($(UNAME_S),Linux)
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PROTOC_OS := linux
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PROTOC_ARCH := $(UNAME_M)
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else ifeq ($(UNAME_S),Darwin)
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PROTOC_OS := osx
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PROTOC_ARCH := x86_64
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endif
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PROTOC_ZIP_URL := https://github.com/protocolbuffers/protobuf/releases/download/v$(PROTOC_VERSION)/protoc-$(PROTOC_VERSION)-$(PROTOC_OS)-$(PROTOC_ARCH).zip
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$(TOOLS_DIR)/PROTOC_$(PROTOC_VERSION):
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@rm -f "$(TOOLS_DIR)"/PROTOC_* && \
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touch "$@"
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# Depend on a versioned file (like PROTOC_3.14.0), so when version
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# gets bumped, we will depend on a nonexistent file and thus download
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# a newer version.
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$(TOOLS_DIR)/protoc/bin/protoc: $(TOOLS_DIR)/PROTOC_$(PROTOC_VERSION)
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echo "Fetching protoc $(PROTOC_VERSION)" && \
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rm -rf $(TOOLS_DIR)/protoc && \
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wget -O $(TOOLS_DIR)/protoc.zip $(PROTOC_ZIP_URL) && \
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unzip $(TOOLS_DIR)/protoc.zip -d $(TOOLS_DIR)/protoc-tmp && \
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rm $(TOOLS_DIR)/protoc.zip && \
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touch $(TOOLS_DIR)/protoc-tmp/bin/protoc && \
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mv $(TOOLS_DIR)/protoc-tmp $(TOOLS_DIR)/protoc
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$(TOOLS_DIR)/protoc-gen-gogofast: $(TOOLS_MOD_DIR)/go.mod $(TOOLS_MOD_DIR)/go.sum $(TOOLS_MOD_DIR)/tools.go
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cd $(TOOLS_MOD_DIR) && \
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go build -o $(TOOLS_DIR)/protoc-gen-gogofast github.com/gogo/protobuf/protoc-gen-gogofast && \
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go mod tidy
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# Return a sed expression for replacing the go_package option in proto
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# file with a one that's valid for us.
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#
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# Example: $(call get-sed-expr,$(PROTOBUF_GEN_DIR))
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define get-sed-expr
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's,go_package = "github.com/open-telemetry/opentelemetry-proto/gen/go,go_package = "go.opentelemetry.io/otel/$(1),'
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endef
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.PHONY: protobuf
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protobuf: protobuf-source gen-protobuf copy-protobufs
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.PHONY: protobuf-source
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protobuf-source: $(SOURCE_PROTO_FILES)
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# This copies proto files from submodule into $(PROTO_SOURCE_DIR),
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# thus satisfying the $(SOURCE_PROTO_FILES) prerequisite. The copies
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# have their package name replaced by go.opentelemetry.io/otel.
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$(PROTO_SOURCE_DIR)/%.proto: $(OTEL_PROTO_SUBMODULE)/%.proto
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@ \
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mkdir -p $(@D); \
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sed -e $(call get-sed-expr,$(PROTOBUF_GEN_DIR)) "$<" >"$@.tmp"; \
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mv "$@.tmp" "$@"
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.PHONY: gen-protobuf
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gen-protobuf: $(SOURCE_PROTO_FILES) $(TOOLS_DIR)/protoc-gen-gogofast $(TOOLS_DIR)/protoc/bin/protoc
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@ \
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mkdir -p "$(PROTOBUF_TEMP_DIR)"; \
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set -e; for f in $^; do \
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if [[ "$${f}" == $(TOOLS_DIR)/* ]]; then continue; fi; \
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echo "protoc $${f#"$(PROTO_SOURCE_DIR)/"}"; \
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PATH="$(TOOLS_DIR):$${PATH}" $(TOOLS_DIR)/protoc/bin/protoc --proto_path="$(PROTO_SOURCE_DIR)" --gogofast_out="plugins=grpc:$(PROTOBUF_TEMP_DIR)" "$${f}"; \
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done
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.PHONY: copy-protobufs
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copy-protobufs:
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@rsync -a $(PROTOBUF_TEMP_DIR)/go.opentelemetry.io/otel/exporters .
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.PHONY: clean
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clean:
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rm -rf $(GEN_TEMP_DIR)
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