-
Notifications
You must be signed in to change notification settings - Fork 56
/
compact_serializer.go
133 lines (121 loc) · 4.09 KB
/
compact_serializer.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
/*
* Copyright (c) 2008-2023, Hazelcast, Inc. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License")
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package serialization
import (
"context"
"fmt"
"reflect"
"github.com/hazelcast/hazelcast-go-client/internal/hzerrors"
pubserialization "github.com/hazelcast/hazelcast-go-client/serialization"
)
type CompactStreamSerializer struct {
typeToSchema map[reflect.Type]*Schema
typeToSerializer map[reflect.Type]pubserialization.CompactSerializer
typeNameToSerializer map[string]pubserialization.CompactSerializer
ss *SchemaService
}
func NewCompactStreamSerializer(cfg pubserialization.CompactConfig, schemaCh chan SchemaMsg) (*CompactStreamSerializer, error) {
typeToSerializer := make(map[reflect.Type]pubserialization.CompactSerializer)
typeNameToSerializer := make(map[string]pubserialization.CompactSerializer)
typeToSchema := map[reflect.Type]*Schema{}
for typeName, ser := range cfg.Serializers() {
typeNameToSerializer[typeName] = ser
typeToSerializer[ser.Type()] = ser
s, err := makeSchemaFromSerializer(ser)
if err != nil {
return nil, err
}
typeToSchema[ser.Type()] = s
}
ss, err := NewSchemaService(cfg, schemaCh)
if err != nil {
return nil, err
}
return &CompactStreamSerializer{
ss: ss,
typeToSchema: typeToSchema,
typeToSerializer: typeToSerializer,
typeNameToSerializer: typeNameToSerializer,
}, nil
}
func (CompactStreamSerializer) ID() int32 {
return TypeCompact
}
func (c CompactStreamSerializer) Read(input pubserialization.DataInput) interface{} {
// TODO: move context to the method signature
ctx := context.Background()
schema := c.getOrReadSchema(ctx, input)
serializer, ok := c.typeNameToSerializer[schema.TypeName]
if !ok {
panic(fmt.Sprintf("no compact serializer found for type: %s", schema.TypeName))
}
reader := NewDefaultCompactReader(c, input.(*ObjectDataInput), schema)
return serializer.Read(reader)
}
func (c CompactStreamSerializer) Write(output pubserialization.DataOutput, object interface{}) {
t := reflect.TypeOf(object)
serializer, ok := c.typeToSerializer[t]
if !ok {
panic(fmt.Sprintf("no compact serializer found for type: %s", t.Name()))
}
schema := c.typeToSchema[t]
// schema will always be non-nil at this point
output.WriteInt64(schema.ID())
w := NewDefaultCompactWriter(c, output.(*PositionalObjectDataOutput), schema)
serializer.Write(w, object)
w.End()
}
func (c CompactStreamSerializer) IsRegisteredAsCompact(t reflect.Type) bool {
_, ok := c.typeToSerializer[t]
return ok
}
func (c CompactStreamSerializer) getOrReadSchema(ctx context.Context, input pubserialization.DataInput) *Schema {
schemaId := input.ReadInt64()
schema, ok := c.ss.Get(ctx, schemaId)
if !ok {
panic(hzerrors.NewSerializationError(fmt.Sprintf("the schema cannot be found with id: %d", schemaId), nil))
}
return schema
}
func MakeSchemasFromConfig(cfg pubserialization.CompactConfig) (map[int64]*Schema, error) {
r := map[int64]*Schema{}
for _, ser := range cfg.Serializers() {
s, err := makeSchemaFromSerializer(ser)
if err != nil {
return nil, err
}
r[s.ID()] = s
}
return r, nil
}
func makeSchemaFromSerializer(ser pubserialization.CompactSerializer) (schema *Schema, err error) {
defer func() {
if rec := recover(); rec != nil {
err = makeError(rec)
}
}()
sw := NewSchemaWriter(ser.TypeName())
// create the zero value for the type in the serializer and build the schema
st := ser.Type()
var v interface{}
if st.Kind() == reflect.Ptr {
v = reflect.New(st.Elem()).Interface()
} else {
v = reflect.Zero(st).Interface()
}
ser.Write(sw, v)
return sw.Build(), nil
}