/
grpc-als.go
132 lines (119 loc) · 3.15 KB
/
grpc-als.go
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package services
import (
// stdlib
"context"
"encoding/json"
"errors"
"io"
"net/http"
"sync"
// third party
"google.golang.org/grpc"
// first party
logdatav2 "github.com/emissary-ingress/emissary/v3/pkg/api/envoy/data/accesslog/v2"
logdatav3 "github.com/emissary-ingress/emissary/v3/pkg/api/envoy/data/accesslog/v3"
alsv2 "github.com/emissary-ingress/emissary/v3/pkg/api/envoy/service/accesslog/v2"
alsv3 "github.com/emissary-ingress/emissary/v3/pkg/api/envoy/service/accesslog/v3"
)
type GRPCALS struct {
HTTPListener
mu sync.Mutex
v2http []*logdatav2.HTTPAccessLogEntry
v2tcp []*logdatav2.TCPAccessLogEntry
v3http []*logdatav3.HTTPAccessLogEntry
v3tcp []*logdatav3.TCPAccessLogEntry
}
func (als *GRPCALS) Start(ctx context.Context) <-chan bool {
httpHandler := http.NewServeMux()
httpHandler.HandleFunc("/logs", als.ServeLogs)
grpcHandler := grpc.NewServer()
alsv2.RegisterAccessLogServiceServer(grpcHandler, ALSv2{als})
alsv3.RegisterAccessLogServiceServer(grpcHandler, ALSv3{als})
return als.HTTPListener.Run(ctx, "gRPC ALS", httpHandler, grpcHandler)
}
func (als *GRPCALS) ServeLogs(w http.ResponseWriter, r *http.Request) {
als.mu.Lock()
defer als.mu.Unlock()
switch r.Method {
case http.MethodGet:
bs, err := json.Marshal(map[string]interface{}{
"alsv2-http": als.v2http,
"alsv2-tcp": als.v2tcp,
"alsv3-http": als.v3http,
"alsv3-tcp": als.v3tcp,
})
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
w.Header().Set("content-type", "application/json")
w.Write(bs)
case http.MethodDelete:
als.v2http = nil
als.v2tcp = nil
als.v3http = nil
als.v3tcp = nil
default:
http.Error(w, "only responds to GET and DELETE", http.StatusMethodNotAllowed)
}
}
type ALSv2 struct {
*GRPCALS
}
func (als ALSv2) StreamAccessLogs(srv alsv2.AccessLogService_StreamAccessLogsServer) error {
for {
msg, err := srv.Recv()
if msg != nil {
switch logEntries := msg.LogEntries.(type) {
case *alsv2.StreamAccessLogsMessage_HttpLogs:
if logEntries.HttpLogs != nil {
als.mu.Lock()
als.v2http = append(als.v2http, logEntries.HttpLogs.LogEntry...)
als.mu.Unlock()
}
case *alsv2.StreamAccessLogsMessage_TcpLogs:
if logEntries.TcpLogs != nil {
als.mu.Lock()
als.v2tcp = append(als.v2tcp, logEntries.TcpLogs.LogEntry...)
als.mu.Unlock()
}
}
}
if err != nil {
if errors.Is(err, io.EOF) {
return nil
}
return err
}
}
}
type ALSv3 struct {
*GRPCALS
}
func (als ALSv3) StreamAccessLogs(srv alsv3.AccessLogService_StreamAccessLogsServer) error {
for {
msg, err := srv.Recv()
if msg != nil {
switch logEntries := msg.LogEntries.(type) {
case *alsv3.StreamAccessLogsMessage_HttpLogs:
if logEntries.HttpLogs != nil {
als.mu.Lock()
als.v3http = append(als.v3http, logEntries.HttpLogs.LogEntry...)
als.mu.Unlock()
}
case *alsv3.StreamAccessLogsMessage_TcpLogs:
if logEntries.TcpLogs != nil {
als.mu.Lock()
als.v3tcp = append(als.v3tcp, logEntries.TcpLogs.LogEntry...)
als.mu.Unlock()
}
}
}
if err != nil {
if errors.Is(err, io.EOF) {
return nil
}
return err
}
}
}