debug/log: remove stale files
Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
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1f8810599b
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@ -1,58 +0,0 @@
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// Package log provides debug logging
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package log
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import (
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"encoding/json"
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"fmt"
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"time"
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"github.com/unistack-org/micro/v3/metadata"
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)
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var (
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// Default buffer size if any
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DefaultSize = 256
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// Default formatter
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DefaultFormat = TextFormat
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)
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// Log is debug log interface for reading and writing logs
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type Log interface {
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// Read reads log entries from the logger
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Read(...ReadOption) ([]Record, error)
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// Write writes records to log
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Write(Record) error
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// Stream log records
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Stream() (Stream, error)
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}
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// Record is log record entry
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type Record struct {
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// Timestamp of logged event
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Timestamp time.Time `json:"timestamp"`
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// Metadata to enrich log record
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Metadata metadata.Metadata `json:"metadata"`
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// Value contains log entry
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Message interface{} `json:"message"`
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}
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// Stream returns a log stream
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type Stream interface {
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Chan() <-chan Record
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Stop() error
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}
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// Format is a function which formats the output
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type FormatFunc func(Record) string
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// TextFormat returns text format
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func TextFormat(r Record) string {
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t := r.Timestamp.Format("2006-01-02 15:04:05")
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return fmt.Sprintf("%s %v", t, r.Message)
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}
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// JSONFormat is a json Format func
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func JSONFormat(r Record) string {
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b, _ := json.Marshal(r)
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return string(b)
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}
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@ -1,115 +0,0 @@
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// Package memory provides an in memory log buffer
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package memory
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import (
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"fmt"
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"github.com/unistack-org/micro/v3/debug/log"
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"github.com/unistack-org/micro/v3/metadata"
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"github.com/unistack-org/micro/v3/util/ring"
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)
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// memoryLog is default micro log
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type memoryLog struct {
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*ring.Buffer
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}
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// NewLog returns default Logger with
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func NewLog(opts ...log.Option) log.Log {
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// get default options
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options := log.DefaultOptions()
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// apply requested options
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for _, o := range opts {
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o(&options)
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}
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return &memoryLog{
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Buffer: ring.New(options.Size),
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}
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}
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// Write writes logs into logger
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func (l *memoryLog) Write(r log.Record) error {
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l.Buffer.Put(fmt.Sprint(r.Message))
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return nil
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}
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// Read reads logs and returns them
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func (l *memoryLog) Read(opts ...log.ReadOption) ([]log.Record, error) {
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options := log.ReadOptions{}
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// initialize the read options
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for _, o := range opts {
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o(&options)
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}
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var entries []*ring.Entry
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// if Since options ha sbeen specified we honor it
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if !options.Since.IsZero() {
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entries = l.Buffer.Since(options.Since)
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}
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// only if we specified valid count constraint
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// do we end up doing some serious if-else kung-fu
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// if since constraint has been provided
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// we return *count* number of logs since the given timestamp;
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// otherwise we return last count number of logs
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if options.Count > 0 {
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switch len(entries) > 0 {
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case true:
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// if we request fewer logs than what since constraint gives us
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if options.Count < len(entries) {
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entries = entries[0:options.Count]
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}
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default:
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entries = l.Buffer.Get(options.Count)
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}
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}
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records := make([]log.Record, 0, len(entries))
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for _, entry := range entries {
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record := log.Record{
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Timestamp: entry.Timestamp,
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Message: entry.Value,
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}
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records = append(records, record)
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}
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return records, nil
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}
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// Stream returns channel for reading log records
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// along with a stop channel, close it when done
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func (l *memoryLog) Stream() (log.Stream, error) {
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// get stream channel from ring buffer
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stream, stop := l.Buffer.Stream()
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// make a buffered channel
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records := make(chan log.Record, 128)
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// get last 10 records
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last10 := l.Buffer.Get(10)
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// stream the log records
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go func() {
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// first send last 10 records
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for _, entry := range last10 {
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records <- log.Record{
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Timestamp: entry.Timestamp,
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Message: entry.Value,
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Metadata: metadata.New(0),
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}
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}
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// now stream continuously
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for entry := range stream {
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records <- log.Record{
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Timestamp: entry.Timestamp,
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Message: entry.Value,
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Metadata: metadata.New(0),
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}
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}
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}()
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return &logStream{
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stream: records,
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stop: stop,
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}, nil
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}
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@ -1,32 +0,0 @@
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package memory
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import (
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"reflect"
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"testing"
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"github.com/unistack-org/micro/v3/debug/log"
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)
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func TestLogger(t *testing.T) {
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// set size to some value
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size := 100
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// override the global logger
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lg := NewLog(log.Size(size))
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// make sure we have the right size of the logger ring buffer
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if lg.(*memoryLog).Size() != size {
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t.Errorf("expected buffer size: %d, got: %d", size, lg.(*memoryLog).Size())
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}
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// Log some cruft
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lg.Write(log.Record{Message: "foobar"})
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lg.Write(log.Record{Message: "foo bar"})
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// Check if the logs are stored in the logger ring buffer
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expected := []string{"foobar", "foo bar"}
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entries, _ := lg.Read(log.Count(len(expected)))
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for i, entry := range entries {
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if !reflect.DeepEqual(entry.Message, expected[i]) {
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t.Errorf("expected %s, got %s", expected[i], entry.Message)
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}
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}
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}
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@ -1,24 +0,0 @@
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package memory
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import (
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"github.com/unistack-org/micro/v3/debug/log"
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)
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type logStream struct {
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stream <-chan log.Record
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stop chan bool
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}
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func (l *logStream) Chan() <-chan log.Record {
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return l.stream
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}
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func (l *logStream) Stop() error {
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select {
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case <-l.stop:
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return nil
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default:
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close(l.stop)
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}
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return nil
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}
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@ -1,23 +0,0 @@
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package noop
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import (
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"github.com/unistack-org/micro/v3/debug/log"
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)
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type noop struct{}
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func (n *noop) Read(...log.ReadOption) ([]log.Record, error) {
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return nil, nil
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}
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func (n *noop) Write(log.Record) error {
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return nil
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}
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func (n *noop) Stream() (log.Stream, error) {
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return nil, nil
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}
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func NewLog(opts ...log.Option) log.Log {
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return new(noop)
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}
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@ -1,70 +0,0 @@
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package log
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import "time"
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// Option used by the logger
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type Option func(*Options)
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// Options are logger options
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type Options struct {
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// Name of the log
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Name string
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// Size is the size of ring buffer
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Size int
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// Format specifies the output format
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Format FormatFunc
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}
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// Name of the log
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func Name(n string) Option {
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return func(o *Options) {
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o.Name = n
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}
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}
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// Size sets the size of the ring buffer
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func Size(s int) Option {
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return func(o *Options) {
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o.Size = s
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}
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}
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func Format(f FormatFunc) Option {
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return func(o *Options) {
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o.Format = f
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}
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}
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// DefaultOptions returns default options
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func DefaultOptions() Options {
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return Options{
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Size: DefaultSize,
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}
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}
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// ReadOptions for querying the logs
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type ReadOptions struct {
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// Since what time in past to return the logs
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Since time.Time
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// Count specifies number of logs to return
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Count int
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// Stream requests continuous log stream
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Stream bool
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}
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// ReadOption used for reading the logs
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type ReadOption func(*ReadOptions)
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// Since sets the time since which to return the log records
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func Since(s time.Time) ReadOption {
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return func(o *ReadOptions) {
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o.Since = s
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}
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}
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// Count sets the number of log records to return
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func Count(c int) ReadOption {
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return func(o *ReadOptions) {
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o.Count = c
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}
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}
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