| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * https://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package cache |
| |
| type PlcConnectionCacheCloseResult interface { |
| GetConnectionCache() PlcConnectionCache |
| GetErr() error |
| } |
| |
| /////////////////////////////////////// |
| /////////////////////////////////////// |
| // |
| // Internal section |
| // |
| |
| //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// |
| // cachedPlcConnectionState |
| //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| type cachedPlcConnectionState int32 |
| |
| const ( |
| StateInitialized cachedPlcConnectionState = iota |
| StateIdle |
| StateInUse |
| StateInvalid |
| ) |
| |
| func (c cachedPlcConnectionState) String() string { |
| switch c { |
| case StateInitialized: |
| return "StateInitialized" |
| case StateIdle: |
| return "StateIdle" |
| case StateInUse: |
| return "StateInUse" |
| case StateInvalid: |
| return "StateInvalid" |
| } |
| return "Unknown" |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// |
| // Events |
| //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| type connectionListener interface { |
| // onConnectionEvent: Callback called by the connection container to signal connection events |
| // that have an impact on the cache itself (Like connections being permanently closed). |
| onConnectionEvent(event connectionEvent) |
| } |
| |
| type connectionEvent interface { |
| getConnectionContainer() *connectionContainer |
| } |
| |
| type connectionErrorEvent struct { |
| conn *connectionContainer |
| err error |
| } |
| |
| func (c *connectionErrorEvent) getConnectionContainer() *connectionContainer { |
| return c.conn |
| } |
| |
| func (c *connectionErrorEvent) getError() error { |
| return c.err |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// |
| // PlcConnectionCacheCloseResult / plcConnectionCacheCloseResult |
| //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| type plcConnectionCacheCloseResult struct { |
| connectionCache PlcConnectionCache |
| err error |
| } |
| |
| func newDefaultPlcConnectionCacheCloseResult(connectionCache PlcConnectionCache, err error) PlcConnectionCacheCloseResult { |
| return &plcConnectionCacheCloseResult{ |
| connectionCache: connectionCache, |
| err: err, |
| } |
| } |
| |
| func (p plcConnectionCacheCloseResult) GetConnectionCache() PlcConnectionCache { |
| return p.connectionCache |
| } |
| |
| func (p plcConnectionCacheCloseResult) GetErr() error { |
| return p.err |
| } |
| |
| // |
| // Internal section |
| // |
| /////////////////////////////////////// |
| /////////////////////////////////////// |
