Tim Emiola | 3acf05a | 2015-01-13 07:55:34 -0800 | [diff] [blame] | 1 | #!/usr/bin/env ruby |
| 2 | |
Craig Tiller | 0605995 | 2015-02-18 08:34:56 -0800 | [diff] [blame] | 3 | # Copyright 2015, Google Inc. |
nnoble | 097ef9b | 2014-12-01 17:06:10 -0800 | [diff] [blame] | 4 | # All rights reserved. |
| 5 | # |
| 6 | # Redistribution and use in source and binary forms, with or without |
| 7 | # modification, are permitted provided that the following conditions are |
| 8 | # met: |
| 9 | # |
| 10 | # * Redistributions of source code must retain the above copyright |
| 11 | # notice, this list of conditions and the following disclaimer. |
| 12 | # * Redistributions in binary form must reproduce the above |
| 13 | # copyright notice, this list of conditions and the following disclaimer |
| 14 | # in the documentation and/or other materials provided with the |
| 15 | # distribution. |
| 16 | # * Neither the name of Google Inc. nor the names of its |
| 17 | # contributors may be used to endorse or promote products derived from |
| 18 | # this software without specific prior written permission. |
| 19 | # |
| 20 | # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 21 | # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 22 | # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 23 | # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 24 | # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 25 | # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 26 | # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 27 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 28 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 29 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 30 | # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 31 | |
nnoble | 097ef9b | 2014-12-01 17:06:10 -0800 | [diff] [blame] | 32 | # Sample gRPC Ruby server that implements the Math::Calc service and helps |
| 33 | # validate GRPC::RpcServer as GRPC implementation using proto2 serialization. |
| 34 | # |
| 35 | # Usage: $ path/to/math_server.rb |
| 36 | |
| 37 | this_dir = File.expand_path(File.dirname(__FILE__)) |
| 38 | lib_dir = File.join(File.dirname(this_dir), 'lib') |
| 39 | $LOAD_PATH.unshift(lib_dir) unless $LOAD_PATH.include?(lib_dir) |
| 40 | $LOAD_PATH.unshift(this_dir) unless $LOAD_PATH.include?(this_dir) |
| 41 | |
| 42 | require 'forwardable' |
| 43 | require 'grpc' |
temiola | 0f0a6bc | 2015-01-07 18:43:40 -0800 | [diff] [blame] | 44 | require 'math_services' |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 45 | require 'optparse' |
nnoble | 097ef9b | 2014-12-01 17:06:10 -0800 | [diff] [blame] | 46 | |
| 47 | # Holds state for a fibonacci series |
| 48 | class Fibber |
nnoble | 097ef9b | 2014-12-01 17:06:10 -0800 | [diff] [blame] | 49 | def initialize(limit) |
Tim Emiola | e2860c5 | 2015-01-16 02:58:41 -0800 | [diff] [blame] | 50 | fail "bad limit: got #{limit}, want limit > 0" if limit < 1 |
nnoble | 097ef9b | 2014-12-01 17:06:10 -0800 | [diff] [blame] | 51 | @limit = limit |
| 52 | end |
| 53 | |
| 54 | def generator |
| 55 | return enum_for(:generator) unless block_given? |
| 56 | idx, current, previous = 0, 1, 1 |
| 57 | until idx == @limit |
| 58 | if idx == 0 || idx == 1 |
Tim Emiola | e2860c5 | 2015-01-16 02:58:41 -0800 | [diff] [blame] | 59 | yield Math::Num.new(num: 1) |
nnoble | 097ef9b | 2014-12-01 17:06:10 -0800 | [diff] [blame] | 60 | idx += 1 |
| 61 | next |
| 62 | end |
| 63 | tmp = current |
| 64 | current = previous + current |
| 65 | previous = tmp |
Tim Emiola | e2860c5 | 2015-01-16 02:58:41 -0800 | [diff] [blame] | 66 | yield Math::Num.new(num: current) |
nnoble | 097ef9b | 2014-12-01 17:06:10 -0800 | [diff] [blame] | 67 | idx += 1 |
| 68 | end |
| 69 | end |
| 70 | end |
| 71 | |
| 72 | # A EnumeratorQueue wraps a Queue to yield the items added to it. |
| 73 | class EnumeratorQueue |
| 74 | extend Forwardable |
| 75 | def_delegators :@q, :push |
| 76 | |
| 77 | def initialize(sentinel) |
| 78 | @q = Queue.new |
| 79 | @sentinel = sentinel |
| 80 | end |
| 81 | |
| 82 | def each_item |
| 83 | return enum_for(:each_item) unless block_given? |
| 84 | loop do |
| 85 | r = @q.pop |
| 86 | break if r.equal?(@sentinel) |
Tim Emiola | e2860c5 | 2015-01-16 02:58:41 -0800 | [diff] [blame] | 87 | fail r if r.is_a? Exception |
nnoble | 097ef9b | 2014-12-01 17:06:10 -0800 | [diff] [blame] | 88 | yield r |
| 89 | end |
| 90 | end |
nnoble | 097ef9b | 2014-12-01 17:06:10 -0800 | [diff] [blame] | 91 | end |
| 92 | |
| 93 | # The Math::Math:: module occurs because the service has the same name as its |
| 94 | # package. That practice should be avoided by defining real services. |
| 95 | class Calculator < Math::Math::Service |
Tim Emiola | e2860c5 | 2015-01-16 02:58:41 -0800 | [diff] [blame] | 96 | def div(div_args, _call) |
nnoble | 097ef9b | 2014-12-01 17:06:10 -0800 | [diff] [blame] | 97 | if div_args.divisor == 0 |
| 98 | # To send non-OK status handlers raise a StatusError with the code and |
| 99 | # and detail they want sent as a Status. |
Tim Emiola | e2860c5 | 2015-01-16 02:58:41 -0800 | [diff] [blame] | 100 | fail GRPC::StatusError.new(GRPC::Status::INVALID_ARGUMENT, |
| 101 | 'divisor cannot be 0') |
nnoble | 097ef9b | 2014-12-01 17:06:10 -0800 | [diff] [blame] | 102 | end |
| 103 | |
Tim Emiola | e2860c5 | 2015-01-16 02:58:41 -0800 | [diff] [blame] | 104 | Math::DivReply.new(quotient: div_args.dividend / div_args.divisor, |
| 105 | remainder: div_args.dividend % div_args.divisor) |
nnoble | 097ef9b | 2014-12-01 17:06:10 -0800 | [diff] [blame] | 106 | end |
| 107 | |
| 108 | def sum(call) |
| 109 | # the requests are accesible as the Enumerator call#each_request |
Tim Emiola | e2860c5 | 2015-01-16 02:58:41 -0800 | [diff] [blame] | 110 | nums = call.each_remote_read.collect(&:num) |
| 111 | sum = nums.inject { |s, x| s + x } |
| 112 | Math::Num.new(num: sum) |
nnoble | 097ef9b | 2014-12-01 17:06:10 -0800 | [diff] [blame] | 113 | end |
| 114 | |
Tim Emiola | e2860c5 | 2015-01-16 02:58:41 -0800 | [diff] [blame] | 115 | def fib(fib_args, _call) |
nnoble | 097ef9b | 2014-12-01 17:06:10 -0800 | [diff] [blame] | 116 | if fib_args.limit < 1 |
Tim Emiola | e2860c5 | 2015-01-16 02:58:41 -0800 | [diff] [blame] | 117 | fail StatusError.new(Status::INVALID_ARGUMENT, 'limit must be >= 0') |
nnoble | 097ef9b | 2014-12-01 17:06:10 -0800 | [diff] [blame] | 118 | end |
| 119 | |
| 120 | # return an Enumerator of Nums |
Tim Emiola | e2860c5 | 2015-01-16 02:58:41 -0800 | [diff] [blame] | 121 | Fibber.new(fib_args.limit).generator |
nnoble | 097ef9b | 2014-12-01 17:06:10 -0800 | [diff] [blame] | 122 | # just return the generator, GRPC::GenericServer sends each actual response |
| 123 | end |
| 124 | |
| 125 | def div_many(requests) |
| 126 | # requests is an lazy Enumerator of the requests sent by the client. |
| 127 | q = EnumeratorQueue.new(self) |
| 128 | t = Thread.new do |
| 129 | begin |
| 130 | requests.each do |req| |
| 131 | logger.info("read #{req.inspect}") |
Tim Emiola | e2860c5 | 2015-01-16 02:58:41 -0800 | [diff] [blame] | 132 | resp = Math::DivReply.new(quotient: req.dividend / req.divisor, |
| 133 | remainder: req.dividend % req.divisor) |
nnoble | 097ef9b | 2014-12-01 17:06:10 -0800 | [diff] [blame] | 134 | q.push(resp) |
Tim Emiola | e2860c5 | 2015-01-16 02:58:41 -0800 | [diff] [blame] | 135 | Thread.pass # let the internal Bidi threads run |
nnoble | 097ef9b | 2014-12-01 17:06:10 -0800 | [diff] [blame] | 136 | end |
| 137 | logger.info('finished reads') |
| 138 | q.push(self) |
| 139 | rescue StandardError => e |
| 140 | q.push(e) # share the exception with the enumerator |
| 141 | raise e |
| 142 | end |
| 143 | end |
| 144 | t.priority = -2 # hint that the div_many thread should not be favoured |
| 145 | q.each_item |
| 146 | end |
nnoble | 097ef9b | 2014-12-01 17:06:10 -0800 | [diff] [blame] | 147 | end |
| 148 | |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 149 | def load_test_certs |
| 150 | this_dir = File.expand_path(File.dirname(__FILE__)) |
| 151 | data_dir = File.join(File.dirname(this_dir), 'spec/testdata') |
| 152 | files = ['ca.pem', 'server1.key', 'server1.pem'] |
| 153 | files.map { |f| File.open(File.join(data_dir, f)).read } |
| 154 | end |
| 155 | |
| 156 | def test_server_creds |
| 157 | certs = load_test_certs |
Tim Emiola | e2860c5 | 2015-01-16 02:58:41 -0800 | [diff] [blame] | 158 | GRPC::Core::ServerCredentials.new(nil, certs[1], certs[2]) |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 159 | end |
| 160 | |
nnoble | 097ef9b | 2014-12-01 17:06:10 -0800 | [diff] [blame] | 161 | def main |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 162 | options = { |
| 163 | 'host' => 'localhost:7071', |
| 164 | 'secure' => false |
| 165 | } |
| 166 | OptionParser.new do |opts| |
temiola | 0f0a6bc | 2015-01-07 18:43:40 -0800 | [diff] [blame] | 167 | opts.banner = 'Usage: [--host <hostname>:<port>] [--secure|-s]' |
| 168 | opts.on('--host HOST', '<hostname>:<port>') do |v| |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 169 | options['host'] = v |
| 170 | end |
| 171 | opts.on('-s', '--secure', 'access using test creds') do |v| |
Tim Emiola | e2860c5 | 2015-01-16 02:58:41 -0800 | [diff] [blame] | 172 | options['secure'] = v |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 173 | end |
| 174 | end.parse! |
| 175 | |
| 176 | if options['secure'] |
| 177 | s = GRPC::RpcServer.new(creds: test_server_creds) |
| 178 | s.add_http2_port(options['host'], true) |
| 179 | logger.info("... running securely on #{options['host']}") |
| 180 | else |
| 181 | s = GRPC::RpcServer.new |
| 182 | s.add_http2_port(options['host']) |
| 183 | logger.info("... running insecurely on #{options['host']}") |
nnoble | 097ef9b | 2014-12-01 17:06:10 -0800 | [diff] [blame] | 184 | end |
| 185 | |
nnoble | 097ef9b | 2014-12-01 17:06:10 -0800 | [diff] [blame] | 186 | s.handle(Calculator) |
| 187 | s.run |
| 188 | end |
| 189 | |
Craig Tiller | 190d360 | 2015-02-18 09:23:38 -0800 | [diff] [blame^] | 190 | main |