Prototype with single host server and no admin panel (#2)

Reviewed-on: wrenn/sandbox#2
Co-authored-by: pptx704 <rafeed@omukk.dev>
Co-committed-by: pptx704 <rafeed@omukk.dev>

envd/internal/logs/logger.go

@@ -0,0 +1,37 @@
+// SPDX-License-Identifier: Apache-2.0
+
+package logs
+
+import (
+	"context"
+	"io"
+	"os"
+	"time"
+
+	"github.com/rs/zerolog"
+
+	"git.omukk.dev/wrenn/sandbox/envd/internal/host"
+	"git.omukk.dev/wrenn/sandbox/envd/internal/logs/exporter"
+)
+
+func NewLogger(ctx context.Context, isNotFC bool, mmdsChan <-chan *host.MMDSOpts) *zerolog.Logger {
+	zerolog.TimestampFieldName = "timestamp"
+	zerolog.TimeFieldFormat = time.RFC3339Nano
+
+	exporters := []io.Writer{}
+
+	if isNotFC {
+		exporters = append(exporters, os.Stdout)
+	} else {
+		exporters = append(exporters, exporter.NewHTTPLogsExporter(ctx, isNotFC, mmdsChan), os.Stdout)
+	}
+
+	l := zerolog.
+		New(io.MultiWriter(exporters...)).
+		With().
+		Timestamp().
+		Logger().
+		Level(zerolog.DebugLevel)
+
+	return &l
+}