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+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+# * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+# * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+# * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+require 'grpc'
+require 'grpc/health/v1alpha/health'
+require 'grpc/health/checker'
+require 'open3'
+
+def can_run_codegen_check
+ system('which grpc_ruby_plugin') && system('which protoc')
+end
+
+describe 'Health protobuf code generation' do
+ context 'the health service file used by grpc/health/checker' do
+ if !can_run_codegen_check
+ skip 'protoc || grpc_ruby_plugin missing, cannot verify health code-gen'
+ else
+ it 'should already be loaded indirectly i.e, used by the other specs' do
+ expect(require('grpc/health/v1alpha/health_services')).to be(false)
+ end
+
+ it 'should have the same content as created by code generation' do
+ root_dir = File.dirname(
+ File.dirname(File.dirname(File.dirname(__FILE__))))
+ pb_dir = File.join(root_dir, 'pb')
+
+ # Get the current content
+ service_path = File.join(pb_dir, 'grpc', 'health', 'v1alpha',
+ 'health_services.rb')
+ want = nil
+ File.open(service_path) { |f| want = f.read }
+
+ # Regenerate it
+ plugin, = Open3.capture2('which', 'grpc_ruby_plugin')
+ plugin = plugin.strip
+ got = nil
+ Dir.mktmpdir do |tmp_dir|
+ gen_out = File.join(tmp_dir, 'grpc', 'health', 'v1alpha',
+ 'health_services.rb')
+ pid = spawn(
+ 'protoc',
+ '-I.',
+ 'grpc/health/v1alpha/health.proto',
+ "--grpc_out=#{tmp_dir}",
+ "--plugin=protoc-gen-grpc=#{plugin}",
+ chdir: pb_dir)
+ Process.wait(pid)
+ File.open(gen_out) { |f| got = f.read }
+ end
+ expect(got).to eq(want)
+ end
+ end
+ end
+end
+
+describe Grpc::Health::Checker do
+ StatusCodes = GRPC::Core::StatusCodes
+ ServingStatus = Grpc::Health::V1alpha::HealthCheckResponse::ServingStatus
+ HCResp = Grpc::Health::V1alpha::HealthCheckResponse
+ HCReq = Grpc::Health::V1alpha::HealthCheckRequest
+ success_tests =
+ [
+ {
+ desc: 'neither host or service are specified',
+ host: '',
+ service: ''
+ }, {
+ desc: 'only the host is specified',
+ host: 'test-fake-host',
+ service: ''
+ }, {
+ desc: 'the host and service are specified',
+ host: 'test-fake-host',
+ service: 'fake-service-1'
+ }, {
+ desc: 'only the service is specified',
+ host: '',
+ service: 'fake-service-2'
+ }
+ ]
+
+ context 'initialization' do
+ it 'can be constructed with no args' do
+ expect(subject).to_not be(nil)
+ end
+ end
+
+ context 'method `add_status` and `check`' do
+ success_tests.each do |t|
+ it "should succeed when #{t[:desc]}" do
+ subject.add_status(t[:host], t[:service], ServingStatus::NOT_SERVING)
+ got = subject.check(HCReq.new(host: t[:host], service: t[:service]),
+ nil)
+ want = HCResp.new(status: ServingStatus::NOT_SERVING)
+ expect(got).to eq(want)
+ end
+ end
+ end
+
+ context 'method `check`' do
+ success_tests.each do |t|
+ it "should fail with NOT_FOUND when #{t[:desc]}" do
+ blk = proc do
+ subject.check(HCReq.new(host: t[:host], service: t[:service]), nil)
+ end
+ expected_msg = /#{StatusCodes::NOT_FOUND}/
+ expect(&blk).to raise_error GRPC::BadStatus, expected_msg
+ end
+ end
+ end
+
+ context 'method `clear_status`' do
+ success_tests.each do |t|
+ it "should fail after clearing status when #{t[:desc]}" do
+ subject.add_status(t[:host], t[:service], ServingStatus::NOT_SERVING)
+ got = subject.check(HCReq.new(host: t[:host], service: t[:service]),
+ nil)
+ want = HCResp.new(status: ServingStatus::NOT_SERVING)
+ expect(got).to eq(want)
+
+ subject.clear_status(t[:host], t[:service])
+ blk = proc do
+ subject.check(HCReq.new(host: t[:host], service: t[:service]),
+ nil)
+ end
+ expected_msg = /#{StatusCodes::NOT_FOUND}/
+ expect(&blk).to raise_error GRPC::BadStatus, expected_msg
+ end
+ end
+ end
+
+ context 'method `clear_all`' do
+ it 'should return NOT_FOUND after being invoked' do
+ success_tests.each do |t|
+ subject.add_status(t[:host], t[:service], ServingStatus::NOT_SERVING)
+ got = subject.check(HCReq.new(host: t[:host], service: t[:service]),
+ nil)
+ want = HCResp.new(status: ServingStatus::NOT_SERVING)
+ expect(got).to eq(want)
+ end
+
+ subject.clear_all
+
+ success_tests.each do |t|
+ blk = proc do
+ subject.check(HCReq.new(host: t[:host], service: t[:service]), nil)
+ end
+ expected_msg = /#{StatusCodes::NOT_FOUND}/
+ expect(&blk).to raise_error GRPC::BadStatus, expected_msg
+ end
+ end
+ end
+
+ describe 'running on RpcServer' do
+ RpcServer = GRPC::RpcServer
+ StatusCodes = GRPC::Core::StatusCodes
+ CheckerStub = Grpc::Health::Checker.rpc_stub_class
+
+ before(:each) do
+ @server_queue = GRPC::Core::CompletionQueue.new
+ server_host = '0.0.0.0:0'
+ @server = GRPC::Core::Server.new(@server_queue, nil)
+ server_port = @server.add_http2_port(server_host)
+ @host = "localhost:#{server_port}"
+ @ch = GRPC::Core::Channel.new(@host, nil)
+ @client_opts = { channel_override: @ch }
+ server_opts = {
+ server_override: @server,
+ completion_queue_override: @server_queue,
+ poll_period: 1
+ }
+ @srv = RpcServer.new(**server_opts)
+ end
+
+ after(:each) do
+ @srv.stop
+ end
+
+ it 'should receive the correct status', server: true do
+ @srv.handle(subject)
+ subject.add_status('', '', ServingStatus::NOT_SERVING)
+ t = Thread.new { @srv.run }
+ @srv.wait_till_running
+
+ stub = CheckerStub.new(@host, **@client_opts)
+ got = stub.check(HCReq.new)
+ want = HCResp.new(status: ServingStatus::NOT_SERVING)
+ expect(got).to eq(want)
+ @srv.stop
+ t.join
+ end
+
+ it 'should fail on unknown services', server: true do
+ @srv.handle(subject)
+ t = Thread.new { @srv.run }
+ @srv.wait_till_running
+ blk = proc do
+ stub = CheckerStub.new(@host, **@client_opts)
+ stub.check(HCReq.new(host: 'unknown', service: 'unknown'))
+ end
+ expected_msg = /#{StatusCodes::NOT_FOUND}/
+ expect(&blk).to raise_error GRPC::BadStatus, expected_msg
+ @srv.stop
+ t.join
+ end
+ end
+end