go.temporal.io/server@v1.23.0/common/dynamicconfig/static_client.go (about)

     1  // The MIT License
     2  //
     3  // Copyright (c) 2020 Temporal Technologies Inc.  All rights reserved.
     4  //
     5  // Copyright (c) 2020 Uber Technologies, Inc.
     6  //
     7  // Permission is hereby granted, free of charge, to any person obtaining a copy
     8  // of this software and associated documentation files (the "Software"), to deal
     9  // in the Software without restriction, including without limitation the rights
    10  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    11  // copies of the Software, and to permit persons to whom the Software is
    12  // furnished to do so, subject to the following conditions:
    13  //
    14  // The above copyright notice and this permission notice shall be included in
    15  // all copies or substantial portions of the Software.
    16  //
    17  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    18  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    19  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    20  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    21  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    22  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    23  // THE SOFTWARE.
    24  
    25  package dynamicconfig
    26  
    27  import "go.temporal.io/server/common/log"
    28  
    29  type (
    30  	// StaticClient is a simple implementation of Client that just looks up in a map.
    31  	// Values can be either plain values or []ConstrainedValue for a constrained value.
    32  	StaticClient map[Key]any
    33  )
    34  
    35  func (s StaticClient) GetValue(key Key) []ConstrainedValue {
    36  	if v, ok := s[key]; ok {
    37  		if cvs, ok := v.([]ConstrainedValue); ok {
    38  			return cvs
    39  		}
    40  		return []ConstrainedValue{{Value: v}}
    41  	}
    42  	return nil
    43  }
    44  
    45  // NewNoopClient returns a Client that has no keys (a Collection using it will always return
    46  // default values).
    47  func NewNoopClient() Client {
    48  	return StaticClient(nil)
    49  }
    50  
    51  // NewNoopCollection creates a new noop collection.
    52  func NewNoopCollection() *Collection {
    53  	return NewCollection(NewNoopClient(), log.NewNoopLogger())
    54  }