github.com/zntrio/harp/v2@v2.0.9/pkg/template/engine/secret.go (about)

     1  // Licensed to Elasticsearch B.V. under one or more contributor
     2  // license agreements. See the NOTICE file distributed with
     3  // this work for additional information regarding copyright
     4  // ownership. Elasticsearch B.V. licenses this file to you under
     5  // the Apache License, Version 2.0 (the "License"); you may
     6  // not use this file except in compliance with the License.
     7  // 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,
    12  // software distributed under the License is distributed on an
    13  // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    14  // KIND, either express or implied.  See the License for the
    15  // specific language governing permissions and limitations
    16  // under the License.
    17  
    18  package engine
    19  
    20  import (
    21  	"fmt"
    22  )
    23  
    24  // SecretReaderFunc is a function to retrieve a secret from a given path.
    25  type SecretReaderFunc func(path string) (map[string]interface{}, error)
    26  
    27  // SecretReaders uses given secret reader funcs to resolve secret path.
    28  func SecretReaders(secretReaders []SecretReaderFunc) func(string) (map[string]interface{}, error) {
    29  	return func(secretPath string) (map[string]interface{}, error) {
    30  		// For all secret readers
    31  		for _, sr := range secretReaders {
    32  			value, err := sr(secretPath)
    33  			if err != nil {
    34  				// Check next secret reader
    35  				continue
    36  			}
    37  
    38  			// No error
    39  			return value, nil
    40  		}
    41  
    42  		// Return error
    43  		return nil, fmt.Errorf("no value found for %q, check secret path or secret reader settings", secretPath)
    44  	}
    45  }