Added ReadOptions; Changed proto; Reimplemented Log(er)

This commit is contained in:
Milos Gajdos 2019-11-27 17:31:35 +00:00
parent 9e177be560
commit 7deafbc5ce
No known key found for this signature in database
GPG Key ID: 8B31058CC55DFD4F
8 changed files with 195 additions and 115 deletions

View File

@ -17,7 +17,7 @@ var (
type Debug struct { type Debug struct {
started int64 started int64
log.Logger log.Log
} }
func newDebug() *Debug { func newDebug() *Debug {
@ -43,6 +43,6 @@ func (d *Debug) Stats(ctx context.Context, req *proto.StatsRequest, rsp *proto.S
return nil return nil
} }
func (d *Debug) Log(ctx context.Context, req *proto.LogRequest, rsp proto.Debug_LogStream) error { func (d *Debug) Logs(ctx context.Context, req *proto.LogRequest, rsp proto.Debug_LogsStream) error {
return nil return nil
} }

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@ -12,13 +12,13 @@ var (
DefaultSize = 1000 DefaultSize = 1000
) )
// defaultLogger is default micro logger // defaultLog is default micro log
type defaultLogger struct { type defaultLog struct {
*buffer.Buffer *buffer.Buffer
} }
// NewLogger returns default Logger with // NewLog returns default Logger with
func NewLogger(opts ...Option) Logger { func NewLog(opts ...Option) Log {
// get default options // get default options
options := DefaultOptions() options := DefaultOptions()
@ -27,27 +27,43 @@ func NewLogger(opts ...Option) Logger {
o(&options) o(&options)
} }
return &defaultLogger{ return &defaultLog{
Buffer: buffer.New(options.Size), Buffer: buffer.New(options.Size),
} }
} }
// Write writes log into logger // Write writes log into logger
func (l *defaultLogger) Write(v ...interface{}) { func (l *defaultLog) Write(v ...interface{}) {
l.log(fmt.Sprint(v...)) l.Buffer.Put(fmt.Sprint(v...))
golog.Print(v...) golog.Print(v...)
} }
// Read reads logs from the logger // Read reads logs from the logger
func (l *defaultLogger) Read(n int) []interface{} { func (l *defaultLog) Read(opts ...ReadOption) []Record {
entries := l.Get(n) options := ReadOptions{}
vals := make([]interface{}, 0, len(entries)) // initialize the read options
for _, val := range entries { for _, o := range opts {
vals = append(vals, val) o(&options)
} }
return vals
}
func (l *defaultLogger) log(entry string) { var entries []*buffer.Entry
l.Buffer.Put(entry) // if Since options ha sbeen specified we honor it
if !options.Since.IsZero() {
entries = l.Buffer.Since(options.Since)
} else {
// otherwie return last count entries
entries = l.Buffer.Get(options.Count)
}
// TODO: if both Since and Count are set should we return
// last Count from the returned time scoped entries?
records := make([]Record, 0, len(entries))
for _, entry := range entries {
record := Record{
Timestamp: entry.Timestamp,
Value: entry.Value,
}
records = append(records, record)
}
return records
} }

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@ -6,21 +6,27 @@ import (
) )
func TestLogger(t *testing.T) { func TestLogger(t *testing.T) {
// set size to some value
size := 100
// override the global logger
logger = NewLog(Size(size))
// make sure we have the right size of the logger ring buffer // make sure we have the right size of the logger ring buffer
if logger.(*defaultLogger).Size() != DefaultSize { if logger.(*defaultLog).Size() != size {
t.Errorf("expected buffer size: %d, got: %d", DefaultSize, logger.(*defaultLogger).Size()) t.Errorf("expected buffer size: %d, got: %d", size, logger.(*defaultLog).Size())
} }
// Log some cruft // Log some cruft
Log("foobar") Info("foobar")
Logf("foo %s", "bar") // increase the log level
level = LevelDebug
Debugf("foo %s", "bar")
// Check if the logs are stored in the logger ring buffer // Check if the logs are stored in the logger ring buffer
expectedEntries := []string{"foobar", "foo bar"} expected := []string{"foobar", "foo bar"}
entries := logger.Read(len(expectedEntries)) entries := logger.Read(Count(len(expected)))
for i, entry := range entries { for i, entry := range entries {
if !reflect.DeepEqual(entry, expectedEntries[i]) { if !reflect.DeepEqual(entry.Value, expected[i]) {
t.Errorf("expected %s, got %s", expectedEntries[i], entry) t.Errorf("expected %s, got %s", expected[i], entry.Value)
} }
} }
} }

View File

@ -4,25 +4,36 @@ package log
import ( import (
"fmt" "fmt"
"os" "os"
"time"
) )
var ( var (
// logger is default Logger // logger is default Logger
logger Logger = NewLogger() logger Log = NewLog()
// default log level is info // default log level is info
level = LevelInfo level = LevelInfo
// prefix for all messages // prefix for all messages
prefix string prefix string
) )
// Logger is event logger // Log is event log
type Logger interface { type Log interface {
// Read reads specified number of log entries // Read reads log entries from the logger
Read(int) []interface{} Read(...ReadOption) []Record
// Write writes logs to logger // Write writes logs to logger
Write(...interface{}) Write(...interface{})
} }
// Record is log record entry
type Record struct {
// Timestamp of logged event
Timestamp time.Time
// Value contains log entry
Value interface{}
// Metadata to enrich log record
Metadata map[string]string
}
// level is a log level // level is a log level
type Level int type Level int
@ -52,7 +63,7 @@ func init() {
} }
} }
func Log(v ...interface{}) { func log(v ...interface{}) {
if len(prefix) > 0 { if len(prefix) > 0 {
logger.Write(fmt.Sprint(append([]interface{}{prefix, " "}, v...)...)) logger.Write(fmt.Sprint(append([]interface{}{prefix, " "}, v...)...))
return return
@ -60,7 +71,7 @@ func Log(v ...interface{}) {
logger.Write(fmt.Sprint(v...)) logger.Write(fmt.Sprint(v...))
} }
func Logf(format string, v ...interface{}) { func logf(format string, v ...interface{}) {
if len(prefix) > 0 { if len(prefix) > 0 {
format = prefix + " " + format format = prefix + " " + format
} }
@ -72,7 +83,7 @@ func WithLevel(l Level, v ...interface{}) {
if l > level { if l > level {
return return
} }
Log(v...) log(v...)
} }
// WithLevel logs with the level specified // WithLevel logs with the level specified
@ -80,7 +91,7 @@ func WithLevelf(l Level, format string, v ...interface{}) {
if l > level { if l > level {
return return
} }
Logf(format, v...) logf(format, v...)
} }
// Trace provides trace level logging // Trace provides trace level logging
@ -145,11 +156,6 @@ func Fatalf(format string, v ...interface{}) {
os.Exit(1) os.Exit(1)
} }
// GetLogger returns the local logger
func GetLogger() Logger {
return logger
}
// SetLevel sets the log level // SetLevel sets the log level
func SetLevel(l Level) { func SetLevel(l Level) {
level = l level = l

View File

@ -1,5 +1,7 @@
package log package log
import "time"
// Option used by the logger // Option used by the logger
type Option func(*Options) type Option func(*Options)
@ -22,3 +24,28 @@ func DefaultOptions() Options {
Size: DefaultSize, Size: DefaultSize,
} }
} }
// ReadOptions for querying the logs
type ReadOptions struct {
// Since what time in past to return the logs
Since time.Time
// Count specifies number of logs to return
Count int
}
// ReadOption used for reading the logs
type ReadOption func(*ReadOptions)
// Since sets the time since which to return the log records
func Since(s time.Time) ReadOption {
return func(o *ReadOptions) {
o.Since = s
}
}
// Count sets the number of log records to return
func Count(c int) ReadOption {
return func(o *ReadOptions) {
o.Count = c
}
}

View File

@ -259,78 +259,100 @@ func (m *LogRequest) GetStream() bool {
return false return false
} }
// LogEvent is service log event // Log is service log record
type LogEvent struct { type Log struct {
// event log record // timestamp of log event
// TODO: change this Timestamp int64 `protobuf:"varint,1,opt,name=timestamp,proto3" json:"timestamp,omitempty"`
Record string `protobuf:"bytes,1,opt,name=record,proto3" json:"record,omitempty"` // log value
Value string `protobuf:"bytes,2,opt,name=value,proto3" json:"value,omitempty"`
// metadata
Metadata map[string]string `protobuf:"bytes,3,rep,name=metadata,proto3" json:"metadata,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
XXX_NoUnkeyedLiteral struct{} `json:"-"` XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"` XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"` XXX_sizecache int32 `json:"-"`
} }
func (m *LogEvent) Reset() { *m = LogEvent{} } func (m *Log) Reset() { *m = Log{} }
func (m *LogEvent) String() string { return proto.CompactTextString(m) } func (m *Log) String() string { return proto.CompactTextString(m) }
func (*LogEvent) ProtoMessage() {} func (*Log) ProtoMessage() {}
func (*LogEvent) Descriptor() ([]byte, []int) { func (*Log) Descriptor() ([]byte, []int) {
return fileDescriptor_8d9d361be58531fb, []int{5} return fileDescriptor_8d9d361be58531fb, []int{5}
} }
func (m *LogEvent) XXX_Unmarshal(b []byte) error { func (m *Log) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_LogEvent.Unmarshal(m, b) return xxx_messageInfo_Log.Unmarshal(m, b)
} }
func (m *LogEvent) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) { func (m *Log) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_LogEvent.Marshal(b, m, deterministic) return xxx_messageInfo_Log.Marshal(b, m, deterministic)
} }
func (m *LogEvent) XXX_Merge(src proto.Message) { func (m *Log) XXX_Merge(src proto.Message) {
xxx_messageInfo_LogEvent.Merge(m, src) xxx_messageInfo_Log.Merge(m, src)
} }
func (m *LogEvent) XXX_Size() int { func (m *Log) XXX_Size() int {
return xxx_messageInfo_LogEvent.Size(m) return xxx_messageInfo_Log.Size(m)
} }
func (m *LogEvent) XXX_DiscardUnknown() { func (m *Log) XXX_DiscardUnknown() {
xxx_messageInfo_LogEvent.DiscardUnknown(m) xxx_messageInfo_Log.DiscardUnknown(m)
} }
var xxx_messageInfo_LogEvent proto.InternalMessageInfo var xxx_messageInfo_Log proto.InternalMessageInfo
func (m *LogEvent) GetRecord() string { func (m *Log) GetTimestamp() int64 {
if m != nil { if m != nil {
return m.Record return m.Timestamp
}
return 0
}
func (m *Log) GetValue() string {
if m != nil {
return m.Value
} }
return "" return ""
} }
func (m *Log) GetMetadata() map[string]string {
if m != nil {
return m.Metadata
}
return nil
}
func init() { func init() {
proto.RegisterType((*HealthRequest)(nil), "HealthRequest") proto.RegisterType((*HealthRequest)(nil), "HealthRequest")
proto.RegisterType((*HealthResponse)(nil), "HealthResponse") proto.RegisterType((*HealthResponse)(nil), "HealthResponse")
proto.RegisterType((*StatsRequest)(nil), "StatsRequest") proto.RegisterType((*StatsRequest)(nil), "StatsRequest")
proto.RegisterType((*StatsResponse)(nil), "StatsResponse") proto.RegisterType((*StatsResponse)(nil), "StatsResponse")
proto.RegisterType((*LogRequest)(nil), "LogRequest") proto.RegisterType((*LogRequest)(nil), "LogRequest")
proto.RegisterType((*LogEvent)(nil), "LogEvent") proto.RegisterType((*Log)(nil), "Log")
proto.RegisterMapType((map[string]string)(nil), "Log.MetadataEntry")
} }
func init() { proto.RegisterFile("debug.proto", fileDescriptor_8d9d361be58531fb) } func init() { proto.RegisterFile("debug.proto", fileDescriptor_8d9d361be58531fb) }
var fileDescriptor_8d9d361be58531fb = []byte{ var fileDescriptor_8d9d361be58531fb = []byte{
// 290 bytes of a gzipped FileDescriptorProto // 359 bytes of a gzipped FileDescriptorProto
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0xa2, 0x1f, 0x47, 0x60, 0x02, 0x00, 0x00,
} }

View File

@ -36,7 +36,7 @@ var _ server.Option
type DebugService interface { type DebugService interface {
Health(ctx context.Context, in *HealthRequest, opts ...client.CallOption) (*HealthResponse, error) Health(ctx context.Context, in *HealthRequest, opts ...client.CallOption) (*HealthResponse, error)
Stats(ctx context.Context, in *StatsRequest, opts ...client.CallOption) (*StatsResponse, error) Stats(ctx context.Context, in *StatsRequest, opts ...client.CallOption) (*StatsResponse, error)
Log(ctx context.Context, in *LogRequest, opts ...client.CallOption) (Debug_LogService, error) Logs(ctx context.Context, in *LogRequest, opts ...client.CallOption) (Debug_LogsService, error)
} }
type debugService struct { type debugService struct {
@ -77,8 +77,8 @@ func (c *debugService) Stats(ctx context.Context, in *StatsRequest, opts ...clie
return out, nil return out, nil
} }
func (c *debugService) Log(ctx context.Context, in *LogRequest, opts ...client.CallOption) (Debug_LogService, error) { func (c *debugService) Logs(ctx context.Context, in *LogRequest, opts ...client.CallOption) (Debug_LogsService, error) {
req := c.c.NewRequest(c.name, "Debug.Log", &LogRequest{}) req := c.c.NewRequest(c.name, "Debug.Logs", &LogRequest{})
stream, err := c.c.Stream(ctx, req, opts...) stream, err := c.c.Stream(ctx, req, opts...)
if err != nil { if err != nil {
return nil, err return nil, err
@ -86,34 +86,34 @@ func (c *debugService) Log(ctx context.Context, in *LogRequest, opts ...client.C
if err := stream.Send(in); err != nil { if err := stream.Send(in); err != nil {
return nil, err return nil, err
} }
return &debugServiceLog{stream}, nil return &debugServiceLogs{stream}, nil
} }
type Debug_LogService interface { type Debug_LogsService interface {
SendMsg(interface{}) error SendMsg(interface{}) error
RecvMsg(interface{}) error RecvMsg(interface{}) error
Close() error Close() error
Recv() (*LogEvent, error) Recv() (*Log, error)
} }
type debugServiceLog struct { type debugServiceLogs struct {
stream client.Stream stream client.Stream
} }
func (x *debugServiceLog) Close() error { func (x *debugServiceLogs) Close() error {
return x.stream.Close() return x.stream.Close()
} }
func (x *debugServiceLog) SendMsg(m interface{}) error { func (x *debugServiceLogs) SendMsg(m interface{}) error {
return x.stream.Send(m) return x.stream.Send(m)
} }
func (x *debugServiceLog) RecvMsg(m interface{}) error { func (x *debugServiceLogs) RecvMsg(m interface{}) error {
return x.stream.Recv(m) return x.stream.Recv(m)
} }
func (x *debugServiceLog) Recv() (*LogEvent, error) { func (x *debugServiceLogs) Recv() (*Log, error) {
m := new(LogEvent) m := new(Log)
err := x.stream.Recv(m) err := x.stream.Recv(m)
if err != nil { if err != nil {
return nil, err return nil, err
@ -126,14 +126,14 @@ func (x *debugServiceLog) Recv() (*LogEvent, error) {
type DebugHandler interface { type DebugHandler interface {
Health(context.Context, *HealthRequest, *HealthResponse) error Health(context.Context, *HealthRequest, *HealthResponse) error
Stats(context.Context, *StatsRequest, *StatsResponse) error Stats(context.Context, *StatsRequest, *StatsResponse) error
Log(context.Context, *LogRequest, Debug_LogStream) error Logs(context.Context, *LogRequest, Debug_LogsStream) error
} }
func RegisterDebugHandler(s server.Server, hdlr DebugHandler, opts ...server.HandlerOption) error { func RegisterDebugHandler(s server.Server, hdlr DebugHandler, opts ...server.HandlerOption) error {
type debug interface { type debug interface {
Health(ctx context.Context, in *HealthRequest, out *HealthResponse) error Health(ctx context.Context, in *HealthRequest, out *HealthResponse) error
Stats(ctx context.Context, in *StatsRequest, out *StatsResponse) error Stats(ctx context.Context, in *StatsRequest, out *StatsResponse) error
Log(ctx context.Context, stream server.Stream) error Logs(ctx context.Context, stream server.Stream) error
} }
type Debug struct { type Debug struct {
debug debug
@ -154,37 +154,37 @@ func (h *debugHandler) Stats(ctx context.Context, in *StatsRequest, out *StatsRe
return h.DebugHandler.Stats(ctx, in, out) return h.DebugHandler.Stats(ctx, in, out)
} }
func (h *debugHandler) Log(ctx context.Context, stream server.Stream) error { func (h *debugHandler) Logs(ctx context.Context, stream server.Stream) error {
m := new(LogRequest) m := new(LogRequest)
if err := stream.Recv(m); err != nil { if err := stream.Recv(m); err != nil {
return err return err
} }
return h.DebugHandler.Log(ctx, m, &debugLogStream{stream}) return h.DebugHandler.Logs(ctx, m, &debugLogsStream{stream})
} }
type Debug_LogStream interface { type Debug_LogsStream interface {
SendMsg(interface{}) error SendMsg(interface{}) error
RecvMsg(interface{}) error RecvMsg(interface{}) error
Close() error Close() error
Send(*LogEvent) error Send(*Log) error
} }
type debugLogStream struct { type debugLogsStream struct {
stream server.Stream stream server.Stream
} }
func (x *debugLogStream) Close() error { func (x *debugLogsStream) Close() error {
return x.stream.Close() return x.stream.Close()
} }
func (x *debugLogStream) SendMsg(m interface{}) error { func (x *debugLogsStream) SendMsg(m interface{}) error {
return x.stream.Send(m) return x.stream.Send(m)
} }
func (x *debugLogStream) RecvMsg(m interface{}) error { func (x *debugLogsStream) RecvMsg(m interface{}) error {
return x.stream.Recv(m) return x.stream.Recv(m)
} }
func (x *debugLogStream) Send(m *LogEvent) error { func (x *debugLogsStream) Send(m *Log) error {
return x.stream.Send(m) return x.stream.Send(m)
} }

View File

@ -3,7 +3,7 @@ syntax = "proto3";
service Debug { service Debug {
rpc Health(HealthRequest) returns (HealthResponse) {}; rpc Health(HealthRequest) returns (HealthResponse) {};
rpc Stats(StatsRequest) returns (StatsResponse) {}; rpc Stats(StatsRequest) returns (StatsResponse) {};
rpc Log(LogRequest) returns (stream LogEvent) {}; rpc Logs(LogRequest) returns (stream Log) {};
} }
message HealthRequest {} message HealthRequest {}
@ -40,9 +40,12 @@ message LogRequest {
bool stream = 3; bool stream = 3;
} }
// LogEvent is service log event // Log is service log record
message LogEvent { message Log {
// event log record // timestamp of log event
// TODO: change this int64 timestamp = 1;
string record = 1; // log value
string value = 2;
// metadata
map<string,string> metadata = 3;
} }