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// Copyright 2022 Google Inc.
//
// 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 fakemonitoring provides a fake implementation of monitoring clients and loggers.
package fakemonitoring
import (
"sync"
"github.com/tink-crypto/tink-go/v2/monitoring"
)
// Logger implements a fake monitoring.Logger
type Logger struct {
Context *monitoring.Context
client *Client
}
var _ monitoring.Logger = (*Logger)(nil)
// Log logs the use of a primitive with a key with `keyID` operating over `numBytes`.
func (l *Logger) Log(keyID uint32, numBytes int) {
l.client.addEvent(&LogEvent{
Context: l.Context,
KeyID: keyID,
NumBytes: numBytes,
})
}
// LogFailure captures a failure.
func (l *Logger) LogFailure() {
l.client.addFailure(&LogFailure{Context: l.Context})
}
// LogEvent stored on each 'Log' operation.
type LogEvent struct {
Context *monitoring.Context
KeyID uint32
NumBytes int
}
// LogFailure stored on each 'LogFailure' operation.
type LogFailure struct {
Context *monitoring.Context
}
// Client implements a fake monitoring.Client
type Client struct {
Name string
eventsMu sync.Mutex
events []*LogEvent
failuresMu sync.Mutex
failures []*LogFailure
}
var _ monitoring.Client = (*Client)(nil)
// NewClient creates a new fake monitoring client.
func NewClient(name string) *Client {
return &Client{
Name: name,
}
}
// NewLogger creates a new fake Logger.
func (c *Client) NewLogger(context *monitoring.Context) (monitoring.Logger, error) {
return &Logger{
Context: context,
client: c,
}, nil
}
// Events returns logged events.
func (c *Client) Events() []*LogEvent {
return c.events
}
// Failures returns logged failures.
func (c *Client) Failures() []*LogFailure {
return c.failures
}
func (c *Client) addEvent(event *LogEvent) {
c.eventsMu.Lock()
defer c.eventsMu.Unlock()
c.events = append(c.events, event)
}
func (c *Client) addFailure(failure *LogFailure) {
defer c.failuresMu.Unlock()
c.failuresMu.Lock()
c.failures = append(c.failures, failure)
}
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