This commit is contained in:
Jeffrey Paul 2024-05-22 14:52:20 -07:00
parent 7e0266aefc
commit 29c31d44f8
5 changed files with 43 additions and 36 deletions

2
go.mod
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@ -1,4 +1,4 @@
module git.eeqj.de/sneak/go-simplelog
module sneak.berlin/go/simplelog
go 1.22.1

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@ -3,6 +3,6 @@ package simplelog
import "log/slog"
// Handler defines the interface for different log outputs.
type Handler interface {
type ExtendedHandler interface {
slog.Handler
}

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@ -1,13 +1,10 @@
package simplelog
import (
"context"
"encoding/json"
"context"
"encoding/json"
"log"
"log/slog"
"log"
)
type JSONHandler struct{}

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@ -10,8 +10,8 @@ import (
"net"
"net/url"
"os"
"os"
"path/filepath"
"runtime"
"strconv"
"time"
@ -43,6 +43,8 @@ var (
type RELPHandler struct {
relpServerURL string
relpHost string
relpPort string
conn net.Conn
ch chan Event
done chan struct{}
@ -50,51 +52,52 @@ type RELPHandler struct {
timer *time.Timer
}
func NewRELPHandler(relpURL string) (*RELPHandler, error) {
func NewRELPHandler(relpURL string) (ExtendedHandler, error) {
parsedURL, err := url.Parse(relpURL)
if err != nil {
return nil, fmt.Errorf("Error parsing RELP URL: %v", err)
return nil, fmt.Errorf("error parsing RELP URL: %v", err)
}
if parsedURL.Scheme != "tcp" {
return nil, fmt.Errorf("RELP URL must have the tcp scheme, got %s", parsedURL.Scheme)
return nil, fmt.Errorf("the RELP URL must have the tcp scheme, got %s", parsedURL.Scheme)
}
host, port, err := net.SplitHostPort(parsedURL.Host)
if err != nil {
return nil, fmt.Errorf("Error splitting host and port: %v", err)
}
if err := os.MkdirAll(filepath.Join(cacheDir, "simplelog"), 0755); err != nil {
return nil, fmt.Errorf("Failed to create cache directory: %v", err)
return nil, fmt.Errorf("failed to create cache directory: %v", err)
}
r := &RELPHandler{
relpServerURL: parsedURL.Host,
ch: make(chan Event, diskBufferLimit),
done: make(chan struct{}),
failedCh: make(chan Event, diskBufferLimit),
timer: time.NewTimer(diskWriteInterval),
relpHost: host,
relpPort: port,
}
if relpDebug {
log.Printf("Created new RELP handler for server at %s", r.relpServerURL)
}
err = r.Startup()
if err != nil {
return nil, err
}
return r, nil
}
func (r *RELPHandler) connectToRELPServer() (net.Conn, error) {
parsedURL, err := url.Parse(r.relpServerURL)
if err != nil {
return nil, fmt.Errorf("Error parsing RELP URL: %v", err)
}
if parsedURL.Scheme != "tcp" {
return nil, fmt.Errorf("RELP URL must have the tcp scheme, got %s", parsedURL.Scheme)
}
host, port, err := net.SplitHostPort(parsedURL.Host)
if err != nil {
return nil, fmt.Errorf("Error splitting host and port: %v", err)
}
conn, err := net.Dial("tcp", net.JoinHostPort(host, port))
conn, err := net.Dial("tcp", net.JoinHostPort(r.relpHost, r.relpPort))
if err != nil {
if relpDebug {
log.Printf("Failed to connect to RELP server at %s: %v", net.JoinHostPort(host, port), err)
log.Printf("Failed to connect to RELP server at %s: %v", net.JoinHostPort(r.relpHost, r.relpPort), err)
}
return nil, err
}
if relpDebug {
log.Printf("Successfully connected to RELP server at %s", net.JoinHostPort(host, port))
log.Printf("Successfully connected to RELP server at %s", net.JoinHostPort(r.relpHost, r.relpPort))
}
return conn, nil
}
@ -139,13 +142,20 @@ func (r *RELPHandler) Handle(ctx context.Context, record slog.Record) error {
if err != nil {
return fmt.Errorf("error marshaling attributes: %v", err)
}
event := NewEvent(record.Level.String(), record.Message, jsonData)
select {
case r.ch <- event:
return nil // Successfully sent event to channel
default:
return fmt.Errorf("failed to log event: channel is full")
// Get the caller information
_, file, line, ok := runtime.Caller(5)
if !ok {
file = "???"
line = 0
}
event := NewExtendedEvent(record.Level.String(), record.Message, jsonData, file, line)
for _, handler := range cl.handlers {
if err := handler.Handle(ctx, event); err != nil {
return err
}
}
return nil
}
func (r *RELPHandler) receiveEventsFromChannel() {

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@ -2,7 +2,7 @@
# Set the environment variables for the RELP server URL and optionally for the webhook URL
export LOGGER_RELP_URL="tcp://10.201.1.18:20514"
export LOGGER_WEBHOOK_URL="https://example.com/webhook"
#export LOGGER_WEBHOOK_URL="https://example.com/webhook"
export RELP_DEBUG=1
# Run the Go program