Refacture structure proposal. (#1793)

2025-11-12 01:02:26 +03:00 · 2016-08-12 00:29:04 +02:00
parent c9ecd023fa
commit b51fb32054
75 changed files with 350 additions and 318 deletions
--- a/command/session-migrate.go
+++ b/command/session-migrate.go
@@ -0,0 +1,104 @@
+/*
+ * Minio Client (C) 2016 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 command
+
+import (
+	"os"
+	"strconv"
+
+	"github.com/minio/mc/pkg/console"
+	"github.com/minio/minio/pkg/probe"
+	"github.com/minio/minio/pkg/quick"
+)
+
+// Migrates session header version '6' to '7'. Only change is
+// LastRemoved field which was added in version '7'.
+func migrateSessionV6ToV7() {
+	for _, sid := range getSessionIDs() {
+		sV6Header, err := loadSessionV6Header(sid)
+		if err != nil && !os.IsNotExist(err.ToGoError()) {
+			fatalIf(err.Trace(sid), "Unable to load version ‘6’. Migration failed please report this issue at https://github.com/minio/mc/issues.")
+		}
+		if sV6Header.Version == "7" { // It is new format.
+			continue
+		}
+
+		sessionFile, err := getSessionFile(sid)
+		fatalIf(err.Trace(sid), "Unable to get session file.")
+
+		// Initialize v7 header and migrate to new config.
+		sV7Header := &sessionV7Header{}
+		sV7Header.Version = "7"
+		sV7Header.When = sV6Header.When
+		sV7Header.RootPath = sV6Header.RootPath
+		sV7Header.GlobalBoolFlags = sV6Header.GlobalBoolFlags
+		sV7Header.GlobalIntFlags = sV6Header.GlobalIntFlags
+		sV7Header.GlobalStringFlags = sV6Header.GlobalStringFlags
+		sV7Header.CommandType = sV6Header.CommandType
+		sV7Header.CommandArgs = sV6Header.CommandArgs
+		sV7Header.CommandBoolFlags = sV6Header.CommandBoolFlags
+		sV7Header.CommandIntFlags = sV6Header.CommandIntFlags
+		sV7Header.CommandStringFlags = sV6Header.CommandStringFlags
+		sV7Header.LastCopied = sV6Header.LastCopied
+		sV7Header.LastRemoved = ""
+		sV7Header.TotalBytes = sV6Header.TotalBytes
+		sV7Header.TotalObjects = sV6Header.TotalObjects
+
+		qs, err := quick.New(sV7Header)
+		fatalIf(err.Trace(sid), "Unable to initialize quick config for session '7' header.")
+
+		err = qs.Save(sessionFile)
+		fatalIf(err.Trace(sid, sessionFile), "Unable to migrate session from '6' to '7'.")
+
+		console.Println("Successfully migrated ‘" + sessionFile + "’ from version ‘" + sV6Header.Version + "’ to " + "‘" + sV7Header.Version + "’.")
+	}
+}
+
+// Migrate session version '5' to version '6', all older sessions are
+// in-fact removed and not migrated. All session files from '6' and
+// above should be migrated - See: migrateSessionV6ToV7().
+func migrateSessionV5ToV6() {
+	for _, sid := range getSessionIDs() {
+		sV6Header, err := loadSessionV6Header(sid)
+		if err != nil && !os.IsNotExist(err.ToGoError()) {
+			fatalIf(err.Trace(sid), "Unable to load version ‘6’. Migration failed please report this issue at https://github.com/minio/mc/issues.")
+		}
+
+		sessionVersion, e := strconv.Atoi(sV6Header.Version)
+		fatalIf(probe.NewError(e), "Unable to load version ‘6’. Migration failed please report this issue at https://github.com/minio/mc/issues.")
+
+		if sessionVersion > 5 { // It is new format.
+			continue
+		}
+
+		/*** Remove all session files older than v6 ***/
+
+		sessionFile, err := getSessionFile(sid)
+		fatalIf(err.Trace(sid), "Unable to get session file.")
+
+		sessionDataFile, err := getSessionDataFile(sid)
+		fatalIf(err.Trace(sid), "Unable to get session data file.")
+
+		console.Println("Removing unsupported session file ‘" + sessionFile + "’ version ‘" + sV6Header.Version + "’.")
+		if e := os.Remove(sessionFile); e != nil {
+			fatalIf(probe.NewError(e), "Unable to remove version ‘"+sV6Header.Version+"’ session file ‘"+sessionFile+"’.")
+		}
+		if e := os.Remove(sessionDataFile); e != nil {
+			fatalIf(probe.NewError(e), "Unable to remove version ‘"+sV6Header.Version+"’ session data file ‘"+sessionDataFile+"’.")
+		}
+	}
+}