dubbo.apache.org/dubbo-go/v3@v3.1.1/xds/client/bootstrap/template.go (about)

     1  /*
     2   * Licensed to the Apache Software Foundation (ASF) under one or more
     3   * contributor license agreements.  See the NOTICE file distributed with
     4   * this work for additional information regarding copyright ownership.
     5   * The ASF licenses this file to You under the Apache License, Version 2.0
     6   * (the "License"); you may not use this file except in compliance with
     7   * the License.  You may obtain a copy of the License at
     8   *
     9   *     http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the License for the specific language governing permissions and
    15   * limitations under the License.
    16   */
    17  
    18  /*
    19   *
    20   * Copyright 2019 gRPC authors.
    21   *
    22   */
    23  
    24  package bootstrap
    25  
    26  import (
    27  	"net/url"
    28  	"strings"
    29  )
    30  
    31  // PopulateResourceTemplate populates the given template using the target
    32  // string. "%s", if exists in the template, will be replaced with target.
    33  //
    34  // If the template starts with "xdstp:", the replaced string will be %-encoded.
    35  // But note that "/" is not percent encoded.
    36  func PopulateResourceTemplate(template, target string) string {
    37  	if !strings.Contains(template, "%s") {
    38  		return template
    39  	}
    40  	if strings.HasPrefix(template, "xdstp:") {
    41  		target = percentEncode(target)
    42  	}
    43  	return strings.Replace(template, "%s", target, -1)
    44  }
    45  
    46  // percentEncode percent encode t, except for "/". See the tests for examples.
    47  func percentEncode(t string) string {
    48  	segs := strings.Split(t, "/")
    49  	for i := range segs {
    50  		segs[i] = url.PathEscape(segs[i])
    51  	}
    52  	return strings.Join(segs, "/")
    53  }