-
Notifications
You must be signed in to change notification settings - Fork 22
/
recorder.go
138 lines (125 loc) · 3.29 KB
/
recorder.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
134
135
136
137
138
// Copyright 2024 The Cockroach Authors
//
// 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.
//
// SPDX-License-Identifier: Apache-2.0
// Package recorder contains an acceptor implementation that records the
// method calls it sees.
package recorder
import (
"context"
"sync"
"github.com/cockroachdb/cdc-sink/internal/types"
)
// Call is a union struct that retains the batch that was passed in.
type Call struct {
Multi *types.MultiBatch
Table *types.TableBatch
Temporal *types.TemporalBatch
}
// Count returns the number of enclosed mutations.
func (c *Call) Count() int {
if c.Multi != nil {
return c.Multi.Count()
}
if c.Table != nil {
return c.Table.Count()
}
if c.Temporal != nil {
return c.Temporal.Count()
}
return 0
}
// Recorder implements [types.MultiAcceptor], recording its inputs.
// This type is safe for concurrent access.
type Recorder struct {
Next types.MultiAcceptor // An optional delegate for calls.
mu struct {
sync.Mutex
calls []*Call
}
}
var _ types.MultiAcceptor = (*Recorder)(nil)
// AcceptTableBatch implements [types.TableAcceptor].
func (r *Recorder) AcceptTableBatch(
ctx context.Context, batch *types.TableBatch, options *types.AcceptOptions,
) error {
r.mu.Lock()
defer r.mu.Unlock()
// Pretend like we're a database.
if err := ctx.Err(); err != nil {
return err
}
var err error
if r.Next != nil {
err = r.Next.AcceptTableBatch(ctx, batch, options)
}
if err == nil {
r.mu.calls = append(r.mu.calls, &Call{Table: batch})
}
return err
}
// AcceptTemporalBatch implements [types.TemporalAcceptor].
func (r *Recorder) AcceptTemporalBatch(
ctx context.Context, batch *types.TemporalBatch, options *types.AcceptOptions,
) error {
r.mu.Lock()
defer r.mu.Unlock()
// Pretend like we're a database.
if err := ctx.Err(); err != nil {
return err
}
var err error
if r.Next != nil {
err = r.Next.AcceptTemporalBatch(ctx, batch, options)
}
if err == nil {
r.mu.calls = append(r.mu.calls, &Call{Temporal: batch})
}
return err
}
// AcceptMultiBatch implements [types.MultiAcceptor].
func (r *Recorder) AcceptMultiBatch(
ctx context.Context, batch *types.MultiBatch, options *types.AcceptOptions,
) error {
r.mu.Lock()
defer r.mu.Unlock()
// Pretend like we're a database.
if err := ctx.Err(); err != nil {
return err
}
var err error
if r.Next != nil {
err = r.Next.AcceptMultiBatch(ctx, batch, options)
}
if err == nil {
r.mu.calls = append(r.mu.calls, &Call{Multi: batch})
}
return nil
}
// Calls returns a copy of the recording.
func (r *Recorder) Calls() []*Call {
r.mu.Lock()
defer r.mu.Unlock()
ret := make([]*Call, len(r.mu.calls))
copy(ret, r.mu.calls)
return ret
}
// Count returns the number of enclosed mutations.
func (r *Recorder) Count() int {
var ret int
for _, call := range r.Calls() {
ret += call.Count()
}
return ret
}