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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,91 @@ | ||
| // The MIT License | ||
| // | ||
| // Copyright (c) 2020 Temporal Technologies Inc. All rights reserved. | ||
| // | ||
| // Copyright (c) 2020 Uber Technologies, Inc. | ||
| // | ||
| // Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| // of this software and associated documentation files (the "Software"), to deal | ||
| // in the Software without restriction, including without limitation the rights | ||
| // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| // copies of the Software, and to permit persons to whom the Software is | ||
| // furnished to do so, subject to the following conditions: | ||
| // | ||
| // The above copyright notice and this permission notice shall be included in | ||
| // all copies or substantial portions of the Software. | ||
| // | ||
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | ||
| // THE SOFTWARE. | ||
|
|
||
| package jsonl | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "io" | ||
|
|
||
| "github.com/gogo/protobuf/jsonpb" | ||
| "github.com/gogo/protobuf/proto" | ||
| ) | ||
|
|
||
| type ( | ||
| JSONParser[T any] interface { | ||
| ParseNext(decoder *json.Decoder) (T, error) | ||
| } | ||
| protoJSONParser[T proto.Message] struct { | ||
| newMessageFn func() T | ||
| unmarshaler jsonpb.Unmarshaler | ||
| } | ||
| jsonStructParser[T any] struct { | ||
| newMessageFn func() *T | ||
| unmarshaler json.Unmarshaler | ||
| } | ||
| ) | ||
|
|
||
| // ParseJSONL parses objects from a JSONL file until EOF. | ||
| func ParseJSONL[T any](reader io.Reader, parser JSONParser[T]) ([]T, error) { | ||
| decoder := json.NewDecoder(reader) | ||
| var ( | ||
| messages []T | ||
| ) | ||
| for { | ||
| message, err := parser.ParseNext(decoder) | ||
| if err == io.EOF { | ||
| return messages, nil | ||
| } | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| messages = append(messages, message) | ||
| } | ||
| } | ||
|
|
||
| // NewProtoJSONParser returns a JSONParser that parses JSONL files containing JSONPB-serialized protos of type T. | ||
| // The newMessageFn argument should return a new instance of the type of message that is being parsed. | ||
| func NewProtoJSONParser[T proto.Message](newMessageFn func() T) JSONParser[T] { | ||
| return protoJSONParser[T]{ | ||
| newMessageFn: newMessageFn, | ||
| } | ||
| } | ||
|
|
||
| // NewJSONStructParser returns a JSONParser that parses JSONL files containing JSON-serialized structs of type T. | ||
| // The newMessageFn argument should return a new instance of the type of message that is being parsed. | ||
| func NewJSONStructParser[T any](newMessageFn func() *T) JSONParser[*T] { | ||
| return jsonStructParser[T]{ | ||
| newMessageFn: newMessageFn, | ||
| } | ||
| } | ||
|
|
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| func (p protoJSONParser[T]) ParseNext(decoder *json.Decoder) (T, error) { | ||
| message := p.newMessageFn() | ||
| return message, p.unmarshaler.UnmarshalNext(decoder, message) | ||
| } | ||
|
|
||
| func (p jsonStructParser[T]) ParseNext(decoder *json.Decoder) (*T, error) { | ||
| message := p.newMessageFn() | ||
| return message, decoder.Decode(message) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,56 @@ | ||
| // The MIT License | ||
| // | ||
| // Copyright (c) 2020 Temporal Technologies Inc. All rights reserved. | ||
| // | ||
| // Copyright (c) 2020 Uber Technologies, Inc. | ||
| // | ||
| // Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| // of this software and associated documentation files (the "Software"), to deal | ||
| // in the Software without restriction, including without limitation the rights | ||
| // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| // copies of the Software, and to permit persons to whom the Software is | ||
| // furnished to do so, subject to the following conditions: | ||
| // | ||
| // The above copyright notice and this permission notice shall be included in | ||
| // all copies or substantial portions of the Software. | ||
| // | ||
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | ||
| // THE SOFTWARE. | ||
|
|
||
| package jsonl_test | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "testing" | ||
|
|
||
| "github.com/stretchr/testify/assert" | ||
| "github.com/stretchr/testify/require" | ||
| "go.temporal.io/server/internal/jsonl" | ||
| ) | ||
|
|
||
| type ( | ||
| Foo struct { | ||
| Foo string | ||
| } | ||
| ) | ||
|
|
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| func TestNewJSONStructParser(t *testing.T) { | ||
| t.Parallel() | ||
|
|
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| const text = `{"foo": "bar"} | ||
| {"foo": "baz"}` | ||
| parser := jsonl.NewJSONStructParser(func() *Foo { | ||
| return &Foo{} | ||
| }) | ||
| messages, err := jsonl.ParseJSONL(bytes.NewBuffer([]byte(text)), parser) | ||
| require.NoError(t, err) | ||
| assert.Equal(t, []*Foo{ | ||
| {Foo: "bar"}, | ||
| {Foo: "baz"}, | ||
| }, messages) | ||
| } |
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