Move etcd, logger, crypto into their own packages (#8366)

- Deprecates _MINIO_PROFILER, `mc admin profile` does the job
- Move ENVs to common location in cmd/config/

cmd/logger/config.go

@@ -0,0 +1,86 @@
+/*
+ * MinIO Cloud Storage, (C) 2019 MinIO, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package logger
+
+import (
+	"strings"
+
+	"github.com/minio/minio/pkg/env"
+)
+
+// Console logger target
+type Console struct {
+	Enabled bool `json:"enabled"`
+}
+
+// HTTP logger target
+type HTTP struct {
+	Enabled  bool   `json:"enabled"`
+	Endpoint string `json:"endpoint"`
+}
+
+// Config console and http logger targets
+type Config struct {
+	Console Console         `json:"console"`
+	HTTP    map[string]HTTP `json:"http"`
+	Audit   map[string]HTTP `json:"audit"`
+}
+
+// HTTP endpoint logger
+const (
+	EnvLoggerHTTPEndpoint      = "MINIO_LOGGER_HTTP_ENDPOINT"
+	EnvAuditLoggerHTTPEndpoint = "MINIO_AUDIT_LOGGER_HTTP_ENDPOINT"
+)
+
+// Default target name when no targets are found
+const (
+	defaultTarget = "_"
+)
+
+// LookupConfig - lookup logger config, override with ENVs if set.
+func LookupConfig(cfg Config) (Config, error) {
+	envs := env.List(EnvLoggerHTTPEndpoint)
+	for _, e := range envs {
+		target := strings.TrimPrefix(e, EnvLoggerHTTPEndpoint)
+		if target == "" {
+			target = defaultTarget
+		}
+		_, ok := cfg.HTTP[target]
+		if ok {
+			cfg.HTTP[target] = HTTP{
+				Enabled:  true,
+				Endpoint: env.Get(e, cfg.HTTP[target].Endpoint),
+			}
+		}
+	}
+	aenvs := env.List(EnvAuditLoggerHTTPEndpoint)
+	for _, e := range aenvs {
+		target := strings.TrimPrefix(e, EnvAuditLoggerHTTPEndpoint)
+		if target == "" {
+			target = defaultTarget
+		}
+		_, ok := cfg.Audit[target]
+		if ok {
+			cfg.Audit[target] = HTTP{
+				Enabled:  true,
+				Endpoint: env.Get(e, cfg.Audit[target].Endpoint),
+			}
+		}
+	}
+
+	return cfg, nil
+}

cmd/logger/console.go

@@ -28,14 +28,14 @@ import (
 	"github.com/minio/minio/pkg/color"
 )
 
-// Console interface describes the methods that need to be implemented to satisfy the interface requirements.
-type Console interface {
+// Logger interface describes the methods that need to be implemented to satisfy the interface requirements.
+type Logger interface {
 	json(msg string, args ...interface{})
 	quiet(msg string, args ...interface{})
 	pretty(msg string, args ...interface{})
 }
 
-func consoleLog(console Console, msg string, args ...interface{}) {
+func consoleLog(console Logger, msg string, args ...interface{}) {
 	switch {
 	case jsonFlag:
 		// Strip escape control characters from json message