Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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61 lines
1.9 KiB
61 lines
1.9 KiB
# Protocol Buffers - Google's data interchange format |
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# Copyright 2008 Google Inc. All rights reserved. |
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# |
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# Use of this source code is governed by a BSD-style |
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# license that can be found in the LICENSE file or at |
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# https://developers.google.com/open-source/licenses/bsd |
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# require mixins before we hook them into the java & c code |
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require 'google/protobuf/message_exts' |
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require 'google/protobuf/object_cache' |
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# We define these before requiring the platform-specific modules. |
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# That way the module init can grab references to these. |
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module Google |
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module Protobuf |
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class Error < StandardError; end |
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class ParseError < Error; end |
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class TypeError < ::TypeError; end |
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PREFER_FFI = case ENV['PROTOCOL_BUFFERS_RUBY_IMPLEMENTATION'] |
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when nil, "", /^native$/i |
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false |
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when /^ffi$/i |
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true |
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else |
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warn "Unexpected value `#{ENV['PROTOCOL_BUFFERS_RUBY_IMPLEMENTATION']}` for environment variable `PROTOCOL_BUFFERS_RUBY_IMPLEMENTATION`. Should be either \"FFI\", \"NATIVE\"." |
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false |
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end |
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def self.encode(msg, options = {}) |
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msg.to_proto(options) |
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end |
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def self.encode_json(msg, options = {}) |
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msg.to_json(options) |
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end |
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def self.decode(klass, proto, options = {}) |
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klass.decode(proto, options) |
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end |
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def self.decode_json(klass, json, options = {}) |
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klass.decode_json(json, options) |
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end |
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IMPLEMENTATION = if PREFER_FFI |
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begin |
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require 'google/protobuf_ffi' |
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:FFI |
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rescue LoadError |
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warn "Caught exception `#{$!.message}` while loading FFI implementation of google/protobuf." |
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warn "Falling back to native implementation." |
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require 'google/protobuf_native' |
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:NATIVE |
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end |
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else |
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require 'google/protobuf_native' |
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:NATIVE |
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end |
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end |
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end
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