github.com/dctrud/umoci@v0.4.3-0.20191016193643-05a1d37de015/oci/casext/casext.go (about)

     1  /*
     2   * umoci: Umoci Modifies Open Containers' Images
     3   * Copyright (C) 2017, 2018 SUSE LLC.
     4   *
     5   * Licensed under the Apache License, Version 2.0 (the "License");
     6   * you may 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, 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  // Package casext provides extensions to the standard cas.Engine interface,
    19  // allowing for generic functionality to be used on top of any implementation
    20  // of cas.Engine.
    21  package casext
    22  
    23  import "github.com/openSUSE/umoci/oci/cas"
    24  
    25  // TODO: Convert this to an interface and make Engine private.
    26  
    27  // Engine is a wrapper around cas.Engine that provides additional, generic
    28  // extensions to the transport-dependent cas.Engine implementation.
    29  type Engine struct {
    30  	cas.Engine
    31  }
    32  
    33  // NewEngine returns a new Engine which acts as a wrapper around the given
    34  // cas.Engine and provides additional, generic extensions to the
    35  // transport-dependent cas.Engine implementation.
    36  func NewEngine(engine cas.Engine) Engine {
    37  	return Engine{Engine: engine}
    38  }