blob: 417c3b31c47451a857ff887c07aa05642bcae012 [file] [log] [blame]
Joey Armstronge8c091f2023-01-17 16:56:26 -05001# -*- mode: makefile; -*-
2# Copyright The OpenTelemetry Authors
3#
4# Licensed under the Apache License, Version 2.0 (the "License");
5# you may not use this file except in compliance with the License.
6# You may obtain a copy of the License at
7#
8# http://www.apache.org/licenses/LICENSE-2.0
9#
10# Unless required by applicable law or agreed to in writing, software
11# distributed under the License is distributed on an "AS IS" BASIS,
12# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13# See the License for the specific language governing permissions and
14# limitations under the License.
15#
16# This Makefile.proto has rules to generate *.pb.go files in
17# `exporters/otlp/internal/opentelemetry-proto-gen` from the .proto files in
18# `exporters/otlp/internal/opentelemetry-proto` using protoc with a go plugin.
19#
20# The protoc binary and other tools are sourced from a docker image
21# `PROTOC_IMAGE`.
22#
23# Prereqs: The archiving utility `pax` is installed.
24
25PROTOC_IMAGE := namely/protoc-all:1.29_2
26PROTOBUF_VERSION := v1
27OTEL_PROTO_SUBMODULE := exporters/otlp/internal/opentelemetry-proto
28PROTOBUF_GEN_DIR := exporters/otlp/internal/opentelemetry-proto-gen
29PROTOBUF_TEMP_DIR := gen/pb-go
30PROTO_SOURCE_DIR := gen/proto
31SUBMODULE_PROTO_FILES := $(wildcard $(OTEL_PROTO_SUBMODULE)/opentelemetry/proto/*/$(PROTOBUF_VERSION)/*.proto \
32 $(OTEL_PROTO_SUBMODULE)/opentelemetry/proto/collector/*/$(PROTOBUF_VERSION)/*.proto)
33SOURCE_PROTO_FILES := $(subst $(OTEL_PROTO_SUBMODULE),$(PROTO_SOURCE_DIR),$(SUBMODULE_PROTO_FILES))
34
35default: protobuf
36
37.PHONY: protobuf protobuf-source gen-protobuf copy-protobufs
38protobuf: protobuf-source gen-protobuf copy-protobufs
39
40protobuf-source: $(SOURCE_PROTO_FILES) | $(PROTO_SOURCE_DIR)/
41
42# Changes go_package in .proto file to point to repo-local location
43define exec-replace-pkgname
44sed 's,go_package = "github.com/open-telemetry/opentelemetry-proto/gen/go,go_package = "go.opentelemetry.io/otel/exporters/otlp/internal/opentelemetry-proto-gen,' < $(1) > $(2)
45
46endef
47
48# replace opentelemetry-proto package name by go.opentelemetry.io/otel specific version
49$(SOURCE_PROTO_FILES): $(PROTO_SOURCE_DIR)/%.proto: $(OTEL_PROTO_SUBMODULE)/%.proto
50 @mkdir -p $(@D)
51 $(call exec-replace-pkgname,$<,$@)
52
53# Command to run protoc using docker image
54define exec-protoc-all
55docker run -v `pwd`:/defs $(PROTOC_IMAGE) $(1)
56
57endef
58
59gen-protobuf: $(SOURCE_PROTO_FILES) | $(PROTOBUF_GEN_DIR)/
60 $(foreach file,$(subst ${PROTO_SOURCE_DIR}/,,$(SOURCE_PROTO_FILES)),$(call exec-protoc-all, -i $(PROTO_SOURCE_DIR) -f ${file} -l gogo -o ${PROTOBUF_TEMP_DIR}))
61
62# requires `pax` to be installed, as it has consistent options for both BSD (Darwin) and Linux
63copy-protobufs: | $(PROTOBUF_GEN_DIR)/
64 find ./$(PROTOBUF_TEMP_DIR)/go.opentelemetry.io/otel/$(PROTOBUF_GEN_DIR) -type f -print0 | \
65 pax -0 -s ',^./$(PROTOBUF_TEMP_DIR)/go.opentelemetry.io/otel/$(PROTOBUF_GEN_DIR),,' -rw ./$(PROTOBUF_GEN_DIR)
66
67$(PROTO_SOURCE_DIR)/ $(PROTOBUF_GEN_DIR)/:
68 mkdir -p $@
69
70.PHONY: clean
71clean:
72 rm -rf ./gen