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	* add request queue trace logging * fix misleading wording * implement request slots per host per method * undo formatting change (?) * remove gratuitous trace logging * rename done -> release avoids confusion with ctx.Done
		
			
				
	
	
		
			106 lines
		
	
	
	
		
			2.7 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
			
		
		
	
	
			106 lines
		
	
	
	
		
			2.7 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
| /*
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|    GoToSocial
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|    Copyright (C) 2021-2022 GoToSocial Authors admin@gotosocial.org
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| 
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|    This program is free software: you can redistribute it and/or modify
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|    it under the terms of the GNU Affero General Public License as published by
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|    the Free Software Foundation, either version 3 of the License, or
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|    (at your option) any later version.
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| 
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|    This program is distributed in the hope that it will be useful,
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|    but WITHOUT ANY WARRANTY; without even the implied warranty of
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|    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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|    GNU Affero General Public License for more details.
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| 
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|    You should have received a copy of the GNU Affero General Public License
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|    along with this program.  If not, see <http://www.gnu.org/licenses/>.
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| */
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| 
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| package httpclient
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| 
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| import (
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| 	"net/http"
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| 	"testing"
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| 	"time"
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| 
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| 	"github.com/stretchr/testify/suite"
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| )
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| 
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| type QueueTestSuite struct {
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| 	suite.Suite
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| }
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| 
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| func (suite *QueueTestSuite) TestQueue() {
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| 	maxOpenConns := 5
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| 	waitTimeout := 1 * time.Second
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| 
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| 	rc := &requestQueue{
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| 		maxOpenConns: maxOpenConns,
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| 	}
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| 
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| 	// fill all the open connections
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| 	var release func()
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| 	for i, n := range make([]interface{}, maxOpenConns) {
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| 		w, r := rc.getWaitSpot("example.org", http.MethodPost)
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| 		w <- n
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| 		if i == maxOpenConns-1 {
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| 			// save the last release function
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| 			release = r
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| 		}
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| 	}
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| 
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| 	// try to wait again for the same host/method combo, it should timeout
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| 	waitAgain, _ := rc.getWaitSpot("example.org", "post")
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| 
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| 	select {
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| 	case waitAgain <- struct{}{}:
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| 		suite.FailNow("first wait did not time out")
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| 	case <-time.After(waitTimeout):
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| 		break
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| 	}
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| 
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| 	// now close the final release that we derived earlier
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| 	release()
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| 
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| 	// try waiting again, it should work this time
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| 	select {
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| 	case waitAgain <- struct{}{}:
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| 		break
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| 	case <-time.After(waitTimeout):
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| 		suite.FailNow("second wait timed out")
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| 	}
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| 
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| 	// the POST queue is now sitting on full
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| 	suite.Len(waitAgain, maxOpenConns)
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| 
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| 	// we should still be able to make a GET for the same host though
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| 	getWait, getRelease := rc.getWaitSpot("example.org", http.MethodGet)
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| 	select {
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| 	case getWait <- struct{}{}:
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| 		break
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| 	case <-time.After(waitTimeout):
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| 		suite.FailNow("get wait timed out")
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| 	}
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| 
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| 	// the GET queue has one request waiting
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| 	suite.Len(getWait, 1)
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| 	// clear it...
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| 	getRelease()
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| 	suite.Empty(getWait)
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| 
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| 	// even though the POST queue for example.org is full, we
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| 	// should still be able to make a POST request to another host :)
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| 	waitForAnotherHost, _ := rc.getWaitSpot("somewhere.else", http.MethodPost)
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| 	select {
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| 	case waitForAnotherHost <- struct{}{}:
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| 		break
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| 	case <-time.After(waitTimeout):
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| 		suite.FailNow("get wait timed out")
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| 	}
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| 
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| 	suite.Len(waitForAnotherHost, 1)
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| }
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| 
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| func TestQueueTestSuite(t *testing.T) {
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| 	suite.Run(t, &QueueTestSuite{})
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| }
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