github.com/confluentinc/confluent-kafka-go@v1.9.2/schemaregistry/cache/mapcache.go (about)

     1  /**
     2   * Copyright 2022 Confluent Inc.
     3   *
     4   * Licensed under the Apache License, Version 2.0 (the "License");
     5   * you may not use this file except in compliance with the License.
     6   * You may obtain a copy of the License at
     7   *
     8   * http://www.apache.org/licenses/LICENSE-2.0
     9   *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   * See the License for the specific language governing permissions and
    14   * limitations under the License.
    15   */
    16  
    17  package cache
    18  
    19  // MapCache is a cache backed by a map
    20  type MapCache struct {
    21  	entries map[interface{}]interface{}
    22  }
    23  
    24  // NewMapCache creates a new cache backed by a map
    25  func NewMapCache() *MapCache {
    26  	c := new(MapCache)
    27  	c.entries = make(map[interface{}]interface{})
    28  	return c
    29  }
    30  
    31  // Get returns the cache value associated with key
    32  //
    33  // Parameters:
    34  //  * `key` - the key to retrieve
    35  //
    36  // Returns the value associated with key and a bool that is `false`
    37  // if the key was not found
    38  func (c *MapCache) Get(key interface{}) (value interface{}, ok bool) {
    39  	value, ok = c.entries[key]
    40  	return
    41  }
    42  
    43  // Put puts a value in cache associated with key
    44  //
    45  // Parameters:
    46  //  * `key` - the key to put
    47  //  * `value` - the value to put
    48  func (c *MapCache) Put(key interface{}, value interface{}) {
    49  	c.entries[key] = value
    50  }
    51  
    52  // Delete deletes the cache entry associated with key
    53  //
    54  // Parameters:
    55  //  * `key` - the key to delete
    56  func (c *MapCache) Delete(key interface{}) {
    57  	delete(c.entries, key)
    58  }
    59  
    60  // ToMap returns the current cache entries copied into a map
    61  func (c *MapCache) ToMap() map[interface{}]interface{} {
    62  	ret := make(map[interface{}]interface{})
    63  	for k, v := range c.entries {
    64  		ret[k] = v
    65  	}
    66  	return ret
    67  }