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// Copyright (C) MongoDB, Inc. 2023-present.
//
// 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
package integration
import (
"context"
"fmt"
"go.mongodb.org/mongo-driver/internal/logger"
"go.mongodb.org/mongo-driver/mongo/integration/mtest"
)
type testLogSink struct {
logs chan func() (int, string, []interface{})
bufferSize int
logsCount int
errsCh chan error
}
type logValidator func(order int, lvl int, msg string, kv ...interface{}) error
func newTestLogSink(ctx context.Context, mt *mtest.T, bufferSize int, validator logValidator) *testLogSink {
mt.Helper()
sink := &testLogSink{
logs: make(chan func() (int, string, []interface{}), bufferSize),
errsCh: make(chan error, bufferSize),
bufferSize: bufferSize,
}
go func() {
order := 0
for log := range sink.logs {
select {
case <-ctx.Done():
sink.errsCh <- ctx.Err()
return
default:
}
level, msg, args := log()
if err := validator(order, level, msg, args...); err != nil {
sink.errsCh <- fmt.Errorf("invalid log at position %d, level %d, and msg %q: %w", order,
level, msg, err)
}
order++
}
close(sink.errsCh)
}()
return sink
}
func (sink *testLogSink) Info(level int, msg string, keysAndValues ...interface{}) {
sink.logs <- func() (int, string, []interface{}) {
return level, msg, keysAndValues
}
if sink.logsCount++; sink.logsCount == sink.bufferSize {
close(sink.logs)
}
}
func (sink *testLogSink) Error(err error, msg string, keysAndValues ...interface{}) {
keysAndValues = append(keysAndValues, "error", err)
sink.Info(int(logger.LevelInfo), msg, keysAndValues)
}
func (sink *testLogSink) errs() <-chan error {
return sink.errsCh
}
func findLogValue(mt *mtest.T, key string, values ...interface{}) interface{} {
mt.Helper()
for i := 0; i < len(values); i += 2 {
if values[i] == key {
return values[i+1]
}
}
return nil
}
type truncValidator func(values ...interface{}) error
// newTruncValidator will return a logger validator for validating truncated
// messages. It takes the key for the portion of the document to validate
// (e.g. "command" for started events, "reply" for finished events, etc), and
// returns an anonymous function that can be used to validate the truncated
// message.
func newTruncValidator(mt *mtest.T, key string, cond func(string) error) truncValidator {
mt.Helper()
return func(values ...interface{}) error {
cmd := findLogValue(mt, key, values...)
if cmd == nil {
return fmt.Errorf("%q not found in keys and values", key)
}
cmdStr, ok := cmd.(string)
if !ok {
return fmt.Errorf("command is not a string")
}
return cond(cmdStr)
}
}
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