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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
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