33 lines
1.4 KiB
Go
33 lines
1.4 KiB
Go
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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package persist
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// Watcher is the interface for Casbin watchers.
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type Watcher interface {
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// SetUpdateCallback sets the callback function that the watcher will call
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// when the policy in DB has been changed by other instances.
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// A classic callback is Enforcer.LoadPolicy().
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SetUpdateCallback(func(string)) error
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// Update calls the update callback of other instances to synchronize their policy.
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// It is usually called after changing the policy in DB, like Enforcer.SavePolicy(),
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// Enforcer.AddPolicy(), Enforcer.RemovePolicy(), etc.
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Update() error
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// Close stops and releases the watcher, the callback function will not be called any more.
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Close()
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}
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