mirror of
https://github.com/astaxie/beego.git
synced 2024-11-14 07:00:56 +00:00
98 lines
2.6 KiB
Go
98 lines
2.6 KiB
Go
// Copyright 2016 beego authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// 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, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package beego
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import (
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"strings"
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"github.com/astaxie/beego/pkg/context"
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)
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// PolicyFunc defines a policy function which is invoked before the controller handler is executed.
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type PolicyFunc func(*context.Context)
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// FindPolicy Find Router info for URL
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func (p *ControllerRegister) FindPolicy(cont *context.Context) []PolicyFunc {
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var urlPath = cont.Input.URL()
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if !BConfig.RouterCaseSensitive {
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urlPath = strings.ToLower(urlPath)
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}
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httpMethod := cont.Input.Method()
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isWildcard := false
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// Find policy for current method
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t, ok := p.policies[httpMethod]
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// If not found - find policy for whole controller
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if !ok {
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t, ok = p.policies["*"]
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isWildcard = true
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}
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if ok {
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runObjects := t.Match(urlPath, cont)
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if r, ok := runObjects.([]PolicyFunc); ok {
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return r
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} else if !isWildcard {
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// If no policies found and we checked not for "*" method - try to find it
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t, ok = p.policies["*"]
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if ok {
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runObjects = t.Match(urlPath, cont)
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if r, ok = runObjects.([]PolicyFunc); ok {
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return r
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}
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}
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}
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}
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return nil
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}
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func (p *ControllerRegister) addToPolicy(method, pattern string, r ...PolicyFunc) {
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method = strings.ToUpper(method)
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p.enablePolicy = true
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if !BConfig.RouterCaseSensitive {
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pattern = strings.ToLower(pattern)
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}
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if t, ok := p.policies[method]; ok {
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t.AddRouter(pattern, r)
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} else {
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t := NewTree()
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t.AddRouter(pattern, r)
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p.policies[method] = t
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}
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}
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// Policy Register new policy in beego
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func Policy(pattern, method string, policy ...PolicyFunc) {
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BeeApp.Handlers.addToPolicy(method, pattern, policy...)
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}
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// Find policies and execute if were found
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func (p *ControllerRegister) execPolicy(cont *context.Context, urlPath string) (started bool) {
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if !p.enablePolicy {
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return false
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}
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// Find Policy for method
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policyList := p.FindPolicy(cont)
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if len(policyList) > 0 {
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// Run policies
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for _, runPolicy := range policyList {
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runPolicy(cont)
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if cont.ResponseWriter.Started {
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return true
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}
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}
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return false
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}
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return false
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}
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