tools/rulegen/java.go

package main

var javaProtoWorkspaceTemplate = mustTemplate(`load("@rules_proto_grpc//{{ .Lang.Dir }}:repositories.bzl", rules_proto_grpc_{{ .Lang.Name }}_repos = "{{ .Lang.Name }}_repos")

rules_proto_grpc_{{ .Lang.Name }}_repos()`)

var javaGrpcWorkspaceTemplate = mustTemplate(`load("@rules_proto_grpc//{{ .Lang.Dir }}:repositories.bzl", rules_proto_grpc_{{ .Lang.Name }}_repos = "{{ .Lang.Name }}_repos")

rules_proto_grpc_{{ .Lang.Name }}_repos()

load("@rules_jvm_external//:defs.bzl", "maven_install")
load("@io_grpc_grpc_java//:repositories.bzl", "IO_GRPC_GRPC_JAVA_ARTIFACTS", "IO_GRPC_GRPC_JAVA_OVERRIDE_TARGETS", "grpc_java_repositories")

maven_install(
    artifacts = IO_GRPC_GRPC_JAVA_ARTIFACTS,
    generate_compat_repositories = True,
    override_targets = IO_GRPC_GRPC_JAVA_OVERRIDE_TARGETS,
    repositories = [
        "https://repo.maven.apache.org/maven2/",
    ],
)

load("@maven//:compat.bzl", "compat_repositories")

compat_repositories()

grpc_java_repositories()`)

var javaLibraryRuleTemplateString = `load("//{{ .Lang.Dir }}:{{ .Lang.Name }}_{{ .Rule.Kind }}_compile.bzl", "{{ .Lang.Name }}_{{ .Rule.Kind }}_compile")
load("//internal:compile.bzl", "proto_compile_attrs")
load("@rules_java//java:defs.bzl", "java_library")

def {{ .Rule.Name }}(name, **kwargs):
    # Compile protos
    name_pb = name + "_pb"
    {{ .Lang.Name }}_{{ .Rule.Kind }}_compile(
        name = name_pb,
        {{ .Common.ArgsForwardingSnippet }}
    )
`

var javaProtoLibraryRuleTemplate = mustTemplate(javaLibraryRuleTemplateString + `
    # Create {{ .Lang.Name }} library
    java_library(
        name = name,
        srcs = [name_pb],
        deps = PROTO_DEPS + kwargs.get("deps", []),
        exports = PROTO_DEPS + kwargs.get("exports", []),
        visibility = kwargs.get("visibility"),
        tags = kwargs.get("tags"),
    )

PROTO_DEPS = [
    "@com_google_protobuf//:protobuf_java",
]`)

var javaGrpcLibraryRuleTemplate = mustTemplate(javaLibraryRuleTemplateString + `
    # Create {{ .Lang.Name }} library
    java_library(
        name = name,
        srcs = [name_pb],
        deps = GRPC_DEPS + kwargs.get("deps", []),
        runtime_deps = ["@io_grpc_grpc_java//netty"],
        exports = GRPC_DEPS + kwargs.get("exports", []),
        visibility = kwargs.get("visibility"),
        tags = kwargs.get("tags"),
    )

GRPC_DEPS = [
    # From https://github.com/grpc/grpc-java/blob/f6c2d221e2b6c975c6cf465d68fe11ab12dabe55/BUILD.bazel#L32-L38
    "@io_grpc_grpc_java//api",
    "@io_grpc_grpc_java//protobuf",
    "@io_grpc_grpc_java//stub",
    "@io_grpc_grpc_java//stub:javax_annotation",
    "@com_google_code_findbugs_jsr305//jar",
    "@com_google_guava_guava//jar",
    "@com_google_protobuf//:protobuf_java",
    "@com_google_protobuf//:protobuf_java_util",
]`)

var javaLibraryRuleAttrs = append(append([]*Attr(nil), libraryRuleAttrs...), []*Attr{
	&Attr{
		Name:      "exports",
		Type:      "label_list",
		Default:   "[]",
		Doc:       "List of labels to pass as exports attr to underlying lang_library rule",
		Mandatory: false,
	},
}...)

func makeJava() *Language {
	return &Language{
		Dir:              "java",
		Name:             "java",
		DisplayName:      "Java",
		Notes: mustTemplate("Rules for generating Java protobuf and gRPC ``.jar`` files and libraries using standard Protocol Buffers and `gRPC-Java <https://github.com/grpc/grpc-java>`_. Libraries are created with the Bazel native ``java_library``"),
		Flags:            commonLangFlags,
		Rules: []*Rule{
			&Rule{
				Name:             "java_proto_compile",
				Kind:             "proto",
				Implementation:   compileRuleTemplate,
				Plugins:          []string{"//java:java_plugin"},
				WorkspaceExample: protoWorkspaceTemplate,
				BuildExample:     protoCompileExampleTemplate,
				Doc:              "Generates a Java protobuf srcjar file",
				Attrs:            compileRuleAttrs,
			},
			&Rule{
				Name:             "java_grpc_compile",
				Kind:             "grpc",
				Implementation:   compileRuleTemplate,
				Plugins:          []string{"//java:java_plugin", "//java:grpc_java_plugin"},
				WorkspaceExample: protoWorkspaceTemplate,
				BuildExample:     grpcCompileExampleTemplate,
				Doc:              "Generates a Java protobuf and gRPC srcjar file",
				Attrs:            compileRuleAttrs,
			},
			&Rule{
				Name:             "java_proto_library",
				Kind:             "proto",
				Implementation:   javaProtoLibraryRuleTemplate,
				WorkspaceExample: javaProtoWorkspaceTemplate,
				BuildExample:     protoLibraryExampleTemplate,
				Doc:              "Generates a Java protobuf library using ``java_library``",
				Attrs:            javaLibraryRuleAttrs,
			},
			&Rule{
				Name:             "java_grpc_library",
				Kind:             "grpc",
				Implementation:   javaGrpcLibraryRuleTemplate,
				WorkspaceExample: javaGrpcWorkspaceTemplate,
				BuildExample:     grpcLibraryExampleTemplate,
				Doc:              "Generates a Java protobuf and gRPC library using ``java_library``",
				Attrs:            javaLibraryRuleAttrs,
			},
		},
	}
}