1 // Copyright 2015 Google Inc. All Rights Reserved. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 // Package util contains utility functions for use throughout the Cloud SQL Auth proxy. 16 package util 17 18 import "strings" 19 20 // SplitName splits a fully qualified instance into its project, region, and 21 // instance name components. While we make the transition to regionalized 22 // metadata, the region is optional. 23 // 24 // Examples: 25 // "proj:region:my-db" -> ("proj", "region", "my-db") 26 // "google.com:project:region:instance" -> ("google.com:project", "region", "instance") 27 // "google.com:missing:part" -> ("google.com:missing", "", "part") 28 func SplitName(instance string) (project, region, name string) { 29 spl := strings.Split(instance, ":") 30 if len(spl) < 2 { 31 return "", "", instance 32 } 33 if dot := strings.Index(spl[0], "."); dot != -1 { 34 spl[1] = spl[0] + ":" + spl[1] 35 spl = spl[1:] 36 } 37 switch { 38 case len(spl) < 2: 39 return "", "", instance 40 case len(spl) == 2: 41 return spl[0], "", spl[1] 42 default: 43 return spl[0], spl[1], spl[2] 44 } 45 } 46