Sree Kuchibhotla
8 years ago
commit
c86460225b
24 changed files with 462 additions and 56 deletions
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#Errors and Cancelletion code samples for grpc-ruby |
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The examples in this directory show use of grpc errors. |
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On the server side, errors are returned from service |
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implementations by raising a certain `GRPC::BadStatus` exception. |
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On the client side, GRPC errors get raised when either: |
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* the call completes (unary and client-streaming call types) |
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* the response `Enumerable` is iterated through (server-streaming and |
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bidi call types). |
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## To run the examples here: |
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Start the server: |
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``` |
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> ruby error_examples_server.rb |
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``` |
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Then run the client: |
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``` |
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> ruby error_examples_client.rb |
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``` |
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#!/usr/bin/env ruby |
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|
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# Copyright 2015, Google Inc. |
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# All rights reserved. |
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# |
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# Redistribution and use in source and binary forms, with or without |
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# modification, are permitted provided that the following conditions are |
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# met: |
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# |
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# * Redistributions of source code must retain the above copyright |
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# notice, this list of conditions and the following disclaimer. |
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# * Redistributions in binary form must reproduce the above |
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# copyright notice, this list of conditions and the following disclaimer |
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# in the documentation and/or other materials provided with the |
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# distribution. |
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# * Neither the name of Google Inc. nor the names of its |
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# contributors may be used to endorse or promote products derived from |
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# this software without specific prior written permission. |
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# |
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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|
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# Sample app that connects to an error-throwing implementation of |
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# Route Guide service. |
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# |
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# Usage: $ path/to/route_guide_client.rb |
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this_dir = File.expand_path(File.dirname(__FILE__)) |
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lib_dir = File.join(File.dirname(this_dir), 'lib') |
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$LOAD_PATH.unshift(lib_dir) unless $LOAD_PATH.include?(lib_dir) |
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require 'grpc' |
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require 'route_guide_services_pb' |
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include Routeguide |
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def run_get_feature_expect_error(stub) |
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resp = stub.get_feature(Point.new) |
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end |
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def run_list_features_expect_error(stub) |
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resps = stub.list_features(Rectangle.new) |
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# NOOP iteration to pick up error |
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resps.each { } |
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end |
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def run_record_route_expect_error(stub) |
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stub.record_route([]) |
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end |
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def run_route_chat_expect_error(stub) |
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resps = stub.route_chat([]) |
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# NOOP iteration to pick up error |
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resps.each { } |
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end |
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def main |
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stub = RouteGuide::Stub.new('localhost:50051', :this_channel_is_insecure) |
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begin |
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run_get_feature_expect_error(stub) |
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rescue GRPC::BadStatus => e |
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puts "===== GetFeature exception: =====" |
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puts e.inspect |
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puts "e.code: #{e.code}" |
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puts "e.details: #{e.details}" |
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puts "e.metadata: #{e.metadata}" |
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puts "=================================" |
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end |
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begin |
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run_list_features_expect_error(stub) |
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rescue GRPC::BadStatus => e |
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error = true |
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puts "===== ListFeatures exception: =====" |
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puts e.inspect |
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puts "e.code: #{e.code}" |
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puts "e.details: #{e.details}" |
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puts "e.metadata: #{e.metadata}" |
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puts "=================================" |
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end |
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begin |
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run_route_chat_expect_error(stub) |
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rescue GRPC::BadStatus => e |
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puts "==== RouteChat exception: ====" |
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puts e.inspect |
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puts "e.code: #{e.code}" |
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puts "e.details: #{e.details}" |
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puts "e.metadata: #{e.metadata}" |
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puts "=================================" |
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end |
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begin |
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run_record_route_expect_error(stub) |
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rescue GRPC::BadStatus => e |
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puts "==== RecordRoute exception: ====" |
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puts e.inspect |
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puts "e.code: #{e.code}" |
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puts "e.details: #{e.details}" |
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puts "e.metadata: #{e.metadata}" |
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puts "=================================" |
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end |
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end |
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main |
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#!/usr/bin/env ruby |
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# -*- coding: utf-8 -*- |
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|
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# Copyright 2015, Google Inc. |
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# All rights reserved. |
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# |
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# Redistribution and use in source and binary forms, with or without |
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# modification, are permitted provided that the following conditions are |
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# met: |
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# |
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# * Redistributions of source code must retain the above copyright |
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# notice, this list of conditions and the following disclaimer. |
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# * Redistributions in binary form must reproduce the above |
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# copyright notice, this list of conditions and the following disclaimer |
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# in the documentation and/or other materials provided with the |
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# distribution. |
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# * Neither the name of Google Inc. nor the names of its |
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# contributors may be used to endorse or promote products derived from |
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# this software without specific prior written permission. |
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# |
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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# 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, |
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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# Error-throwing implementation of Route Guide service. |
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# |
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# Usage: $ path/to/route_guide_server.rb |
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this_dir = File.expand_path(File.dirname(__FILE__)) |
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lib_dir = File.join(File.dirname(this_dir), 'lib') |
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$LOAD_PATH.unshift(lib_dir) unless $LOAD_PATH.include?(lib_dir) |
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require 'grpc' |
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require 'route_guide_services_pb' |
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include Routeguide |
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include GRPC::Core::StatusCodes |
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# CanellingandErrorReturningServiceImpl provides an implementation of the RouteGuide service. |
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class CancellingAndErrorReturningServerImpl < RouteGuide::Service |
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# def get_feature |
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# Note get_feature isn't implemented in this subclass, so the server |
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# will get a gRPC UNIMPLEMENTED error when it's called. |
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def list_features(rectangle, _call) |
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raise "string appears on the client in the 'details' field of a 'GRPC::Unknown' exception" |
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end |
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def record_route(call) |
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raise GRPC::BadStatus.new_status_exception(CANCELLED) |
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end |
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def route_chat(notes) |
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raise GRPC::BadStatus.new_status_exception(ABORTED, details = 'arbitrary', metadata = {somekey: 'val'}) |
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end |
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end |
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def main |
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port = '0.0.0.0:50051' |
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s = GRPC::RpcServer.new |
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s.add_http2_port(port, :this_port_is_insecure) |
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GRPC.logger.info("... running insecurely on #{port}") |
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s.handle(CancellingAndErrorReturningServerImpl.new) |
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s.run_till_terminated |
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end |
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main |
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#Overview |
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# Overview |
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This directory contains source code for gRPC protocol buffer compiler (*protoc*) plugins. Along with `protoc`, |
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these plugins are used to generate gRPC client and server stubs from `.proto` files. |
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@ -1,4 +1,4 @@ |
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#Overview |
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# Overview |
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This directory contains source code for C library (a.k.a the *gRPC C core*) that provides all gRPC's core functionality through a low level API. Libraries in other languages in this repository (C++, Ruby, |
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Python, PHP, NodeJS, Objective-C) are layered on top of this library. |
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