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Create an example project to demonstrate bzlmod usage.
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‎.bazelignore

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bzl-examples/

‎bzl-examples/bzlmod/.bazelrc

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build --cxxopt=-std=c++17 --host_cxxopt=-std=c++17

‎bzl-examples/bzlmod/.bazelversion

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7.6.1

‎bzl-examples/bzlmod/.gitignore

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bazel-*
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MODULE.bazel.lock

‎bzl-examples/bzlmod/BUILD.bazel

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load("@aspect_rules_lint//format:defs.bzl", "format_multirun")
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load("@rules_java//java:defs.bzl", "java_binary")
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java_binary(
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name = "ktfmt",
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main_class = "com.facebook.ktfmt.cli.Main",
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runtime_deps = ["@ktfmt//jar"],
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)
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format_multirun(
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name = "format",
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kotlin = ":ktfmt",
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protocol_buffer = "@rules_buf_toolchains//:buf",
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starlark = "@buildifier_prebuilt//:buildifier",
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visibility = ["//visibility:public"],
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)

‎bzl-examples/bzlmod/MODULE.bazel

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module(
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name = "bzlmod",
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version = "1.0",
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)
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bazel_dep(name = "protobuf", version = "30.2")
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bazel_dep(name = "rules_kotlin", version = "2.1.3")
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bazel_dep(name = "com_github_grpc_grpc_kotlin", version = "0.0.0")
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bazel_dep(name = "rules_jvm_external", version = "6.7")
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bazel_dep(name = "aspect_rules_lint", version = "1.3.4")
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bazel_dep(name = "rules_java", version = "8.11.0")
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bazel_dep(name = "buildifier_prebuilt", version = "8.0.3")
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bazel_dep(name = "rules_buf", version = "0.3.0")
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local_path_override(
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module_name = "com_github_grpc_grpc_kotlin",
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path = "../../",
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)
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maven = use_extension("@rules_jvm_external//:extensions.bzl", "maven")
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maven.install(
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# Rerun whenever adding new artifacts.
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# $ REPIN=1 bazelisk run @maven//:pin
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artifacts = [
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"com.google.truth:truth:1.4.2",
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"junit:junit:4.13.2",
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"com.google.truth.extensions:truth-proto-extension:1.4.4",
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"io.grpc:grpc-testing:1.71.0",
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],
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fetch_sources = False,
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generate_compat_repositories = True,
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lock_file = "//:maven_install.json",
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strict_visibility = True,
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)
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use_repo(maven, "maven")
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install_ktfmt = use_extension("//:extensions.bzl", "install_ktfmt")
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use_repo(install_ktfmt, "ktfmt")
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buf = use_extension("@rules_buf//buf:extensions.bzl", "buf")
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use_repo(buf, "rules_buf_toolchains")

‎bzl-examples/bzlmod/extensions.bzl

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load("@aspect_rules_lint//format:repositories.bzl", "fetch_ktfmt")
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def _install_ktfmt_impl(module_ctx):
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fetch_ktfmt()
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install_ktfmt = module_extension(_install_ktfmt_impl)

‎bzl-examples/bzlmod/java/io/grpc/examples/bzlmod/BUILD.bazel

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load("@com_github_grpc_grpc_kotlin//:kt_jvm_grpc.bzl", "kt_jvm_grpc_library", "kt_jvm_proto_library")
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load("@protobuf//bazel:proto_library.bzl", "proto_library")
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load("@rules_kotlin//kotlin:jvm.bzl", "kt_jvm_library")
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package(default_visibility = ["//javatests/io/grpc/examples/bzlmod:__subpackages__"])
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proto_library(
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name = "fibonacci_proto",
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srcs = ["fibonacci.proto"],
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deps = [],
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)
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kt_jvm_proto_library(
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name = "fibonacci_kt_proto",
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deps = [":fibonacci_proto"],
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)
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kt_jvm_grpc_library(
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name = "fibonacci_kt_grpc",
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srcs = [":fibonacci_proto"],
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deps = [":fibonacci_kt_proto"],
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)
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kt_jvm_library(
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name = "fibonacci",
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srcs = ["Fibonacci.kt"],
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deps = [
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":fibonacci_kt_grpc",
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":fibonacci_kt_proto",
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],
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)

‎bzl-examples/bzlmod/java/io/grpc/examples/bzlmod/Fibonacci.kt

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package io.grpc.examples.bzlmod
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/** A simple implementation of a Fibonacci service. */
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class Fibonacci : FibonacciServiceGrpcKt.FibonacciServiceCoroutineImplBase() {
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override suspend fun query(request: QueryRequest): QueryResponse {
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if (request.nth <= 1) {
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return queryResponse { nthFibonacci = request.nth }
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}
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var prv = 0L
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var cur = 1L
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var nxt = 1L
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for (i in 2..request.nth) {
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prv = cur
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cur = nxt
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nxt = (prv + cur) % request.mod
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}
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return queryResponse { nthFibonacci = cur }
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}
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}

‎bzl-examples/bzlmod/java/io/grpc/examples/bzlmod/fibonacci.proto

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syntax = "proto3";
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package io.grpc.examples.bzlmod;
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option java_multiple_files = true;
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option java_outer_classname = "FibonacciProtos";
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option java_package = "io.grpc.examples.bzlmod";
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message QueryRequest {
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int64 nth = 1;
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int64 mod = 2;
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}
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message QueryResponse {
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int64 nth_fibonacci = 1;
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}
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service FibonacciService {
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rpc Query(QueryRequest) returns (QueryResponse);
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}

‎bzl-examples/bzlmod/javatests/io/grpc/examples/bzlmod/BUILD.bazel

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load("@rules_jvm_external//:defs.bzl", "artifact")
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load("@rules_kotlin//kotlin:jvm.bzl", "kt_jvm_test")
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kt_jvm_test(
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name = "FibonacciTest",
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srcs = ["FibonacciTest.kt"],
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deps = [
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"//java/io/grpc/examples/bzlmod:fibonacci",
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"//java/io/grpc/examples/bzlmod:fibonacci_kt_grpc",
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"//java/io/grpc/examples/bzlmod:fibonacci_kt_proto",
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artifact("com.google.truth:truth"),
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artifact("com.google.truth.extensions:truth-proto-extension"),
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artifact("junit:junit"),
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artifact("io.grpc:grpc-testing"),
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],
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)

‎bzl-examples/bzlmod/javatests/io/grpc/examples/bzlmod/FibonacciTest.kt

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package io.grpc.examples.bzlmod
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import com.google.common.truth.Truth.assertThat
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import com.google.common.truth.extensions.proto.ProtoTruth.assertThat
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import io.grpc.inprocess.InProcessChannelBuilder
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import io.grpc.inprocess.InProcessServerBuilder
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import io.grpc.testing.GrpcCleanupRule
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import kotlinx.coroutines.runBlocking
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import org.junit.Before
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import org.junit.Rule
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import org.junit.Test
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import org.junit.runner.RunWith
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import org.junit.runners.JUnit4
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@RunWith(JUnit4::class)
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class FibonacciTest {
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@get:Rule val grpcCleanup = GrpcCleanupRule()
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private lateinit var stub: FibonacciServiceGrpcKt.FibonacciServiceCoroutineStub
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@Before
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fun setUp() {
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val serverName = InProcessServerBuilder.generateName()
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grpcCleanup.register(
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InProcessServerBuilder.forName(serverName)
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.directExecutor()
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.addService(Fibonacci())
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.build()
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.start())
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stub =
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FibonacciServiceGrpcKt.FibonacciServiceCoroutineStub(
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grpcCleanup.register(
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InProcessChannelBuilder.forName(serverName).directExecutor().build()))
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}
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@Test
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fun query_succeeds() {
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runBlocking {
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val response =
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stub.query(
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queryRequest {
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nth = 20
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mod = 1000000007
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})
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assertThat(response).isEqualTo(queryResponse { nthFibonacci = 6765 })
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}
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}
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}

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