mirror of https://github.com/vbatts/imgsrv.git
1560 lines
40 KiB
Go
1560 lines
40 KiB
Go
// mgo - MongoDB driver for Go
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//
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// Copyright (c) 2010-2012 - Gustavo Niemeyer <gustavo@niemeyer.net>
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this
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// list of conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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// ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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package mgo_test
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import (
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"fmt"
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"io"
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"labix.org/v2/mgo"
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"labix.org/v2/mgo/bson"
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. "launchpad.net/gocheck"
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"net"
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"strings"
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"sync"
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"time"
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)
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func (s *S) TestNewSession(c *C) {
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session, err := mgo.Dial("localhost:40001")
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c.Assert(err, IsNil)
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defer session.Close()
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// Do a dummy operation to wait for connection.
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coll := session.DB("mydb").C("mycoll")
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err = coll.Insert(M{"_id": 1})
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c.Assert(err, IsNil)
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// Tweak safety and query settings to ensure other has copied those.
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session.SetSafe(nil)
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session.SetBatch(-1)
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other := session.New()
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defer other.Close()
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session.SetSafe(&mgo.Safe{})
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// Clone was copied while session was unsafe, so no errors.
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otherColl := other.DB("mydb").C("mycoll")
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err = otherColl.Insert(M{"_id": 1})
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c.Assert(err, IsNil)
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// Original session was made safe again.
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err = coll.Insert(M{"_id": 1})
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c.Assert(err, NotNil)
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// With New(), each session has its own socket now.
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stats := mgo.GetStats()
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c.Assert(stats.MasterConns, Equals, 2)
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c.Assert(stats.SocketsInUse, Equals, 2)
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// Ensure query parameters were cloned.
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err = otherColl.Insert(M{"_id": 2})
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c.Assert(err, IsNil)
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// Ping the database to ensure the nonce has been received already.
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c.Assert(other.Ping(), IsNil)
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mgo.ResetStats()
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iter := otherColl.Find(M{}).Iter()
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c.Assert(err, IsNil)
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m := M{}
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ok := iter.Next(m)
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c.Assert(ok, Equals, true)
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err = iter.Close()
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c.Assert(err, IsNil)
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// If Batch(-1) is in effect, a single document must have been received.
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stats = mgo.GetStats()
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c.Assert(stats.ReceivedDocs, Equals, 1)
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}
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func (s *S) TestCloneSession(c *C) {
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session, err := mgo.Dial("localhost:40001")
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c.Assert(err, IsNil)
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defer session.Close()
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// Do a dummy operation to wait for connection.
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coll := session.DB("mydb").C("mycoll")
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err = coll.Insert(M{"_id": 1})
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c.Assert(err, IsNil)
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// Tweak safety and query settings to ensure clone is copying those.
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session.SetSafe(nil)
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session.SetBatch(-1)
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clone := session.Clone()
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defer clone.Close()
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session.SetSafe(&mgo.Safe{})
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// Clone was copied while session was unsafe, so no errors.
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cloneColl := clone.DB("mydb").C("mycoll")
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err = cloneColl.Insert(M{"_id": 1})
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c.Assert(err, IsNil)
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// Original session was made safe again.
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err = coll.Insert(M{"_id": 1})
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c.Assert(err, NotNil)
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// With Clone(), same socket is shared between sessions now.
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stats := mgo.GetStats()
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c.Assert(stats.SocketsInUse, Equals, 1)
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c.Assert(stats.SocketRefs, Equals, 2)
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// Refreshing one of them should let the original socket go,
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// while preserving the safety settings.
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clone.Refresh()
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err = cloneColl.Insert(M{"_id": 1})
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c.Assert(err, IsNil)
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// Must have used another connection now.
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stats = mgo.GetStats()
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c.Assert(stats.SocketsInUse, Equals, 2)
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c.Assert(stats.SocketRefs, Equals, 2)
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// Ensure query parameters were cloned.
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err = cloneColl.Insert(M{"_id": 2})
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c.Assert(err, IsNil)
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// Ping the database to ensure the nonce has been received already.
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c.Assert(clone.Ping(), IsNil)
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mgo.ResetStats()
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iter := cloneColl.Find(M{}).Iter()
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c.Assert(err, IsNil)
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m := M{}
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ok := iter.Next(m)
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c.Assert(ok, Equals, true)
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err = iter.Close()
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c.Assert(err, IsNil)
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// If Batch(-1) is in effect, a single document must have been received.
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stats = mgo.GetStats()
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c.Assert(stats.ReceivedDocs, Equals, 1)
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}
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func (s *S) TestSetModeStrong(c *C) {
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session, err := mgo.Dial("localhost:40012")
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c.Assert(err, IsNil)
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defer session.Close()
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session.SetMode(mgo.Monotonic, false)
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session.SetMode(mgo.Strong, false)
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c.Assert(session.Mode(), Equals, mgo.Strong)
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result := M{}
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cmd := session.DB("admin").C("$cmd")
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err = cmd.Find(M{"ismaster": 1}).One(&result)
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c.Assert(err, IsNil)
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c.Assert(result["ismaster"], Equals, true)
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coll := session.DB("mydb").C("mycoll")
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err = coll.Insert(M{"a": 1})
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c.Assert(err, IsNil)
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// Wait since the sync also uses sockets.
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for len(session.LiveServers()) != 3 {
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c.Log("Waiting for cluster sync to finish...")
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time.Sleep(5e8)
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}
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stats := mgo.GetStats()
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c.Assert(stats.MasterConns, Equals, 1)
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c.Assert(stats.SlaveConns, Equals, 2)
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c.Assert(stats.SocketsInUse, Equals, 1)
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session.SetMode(mgo.Strong, true)
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stats = mgo.GetStats()
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c.Assert(stats.SocketsInUse, Equals, 0)
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}
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func (s *S) TestSetModeMonotonic(c *C) {
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// Must necessarily connect to a slave, otherwise the
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// master connection will be available first.
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session, err := mgo.Dial("localhost:40012")
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c.Assert(err, IsNil)
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defer session.Close()
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session.SetMode(mgo.Monotonic, false)
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c.Assert(session.Mode(), Equals, mgo.Monotonic)
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result := M{}
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cmd := session.DB("admin").C("$cmd")
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err = cmd.Find(M{"ismaster": 1}).One(&result)
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c.Assert(err, IsNil)
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c.Assert(result["ismaster"], Equals, false)
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coll := session.DB("mydb").C("mycoll")
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err = coll.Insert(M{"a": 1})
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c.Assert(err, IsNil)
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result = M{}
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err = cmd.Find(M{"ismaster": 1}).One(&result)
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c.Assert(err, IsNil)
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c.Assert(result["ismaster"], Equals, true)
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// Wait since the sync also uses sockets.
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for len(session.LiveServers()) != 3 {
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c.Log("Waiting for cluster sync to finish...")
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time.Sleep(5e8)
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}
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stats := mgo.GetStats()
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c.Assert(stats.MasterConns, Equals, 1)
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c.Assert(stats.SlaveConns, Equals, 2)
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c.Assert(stats.SocketsInUse, Equals, 2)
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session.SetMode(mgo.Monotonic, true)
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stats = mgo.GetStats()
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c.Assert(stats.SocketsInUse, Equals, 0)
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}
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func (s *S) TestSetModeMonotonicAfterStrong(c *C) {
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// Test that a strong session shifting to a monotonic
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// one preserves the socket untouched.
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session, err := mgo.Dial("localhost:40012")
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c.Assert(err, IsNil)
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defer session.Close()
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// Insert something to force a connection to the master.
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coll := session.DB("mydb").C("mycoll")
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err = coll.Insert(M{"a": 1})
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c.Assert(err, IsNil)
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session.SetMode(mgo.Monotonic, false)
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// Wait since the sync also uses sockets.
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for len(session.LiveServers()) != 3 {
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c.Log("Waiting for cluster sync to finish...")
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time.Sleep(5e8)
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}
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// Master socket should still be reserved.
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stats := mgo.GetStats()
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c.Assert(stats.SocketsInUse, Equals, 1)
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// Confirm it's the master even though it's Monotonic by now.
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result := M{}
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cmd := session.DB("admin").C("$cmd")
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err = cmd.Find(M{"ismaster": 1}).One(&result)
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c.Assert(err, IsNil)
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c.Assert(result["ismaster"], Equals, true)
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}
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func (s *S) TestSetModeStrongAfterMonotonic(c *C) {
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// Test that shifting from Monotonic to Strong while
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// using a slave socket will keep the socket reserved
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// until the master socket is necessary, so that no
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// switch over occurs unless it's actually necessary.
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// Must necessarily connect to a slave, otherwise the
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// master connection will be available first.
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session, err := mgo.Dial("localhost:40012")
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c.Assert(err, IsNil)
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defer session.Close()
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session.SetMode(mgo.Monotonic, false)
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// Ensure we're talking to a slave, and reserve the socket.
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result := M{}
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err = session.Run("ismaster", &result)
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c.Assert(err, IsNil)
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c.Assert(result["ismaster"], Equals, false)
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// Switch to a Strong session.
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session.SetMode(mgo.Strong, false)
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// Wait since the sync also uses sockets.
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for len(session.LiveServers()) != 3 {
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c.Log("Waiting for cluster sync to finish...")
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time.Sleep(5e8)
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}
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// Slave socket should still be reserved.
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stats := mgo.GetStats()
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c.Assert(stats.SocketsInUse, Equals, 1)
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// But any operation will switch it to the master.
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result = M{}
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err = session.Run("ismaster", &result)
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c.Assert(err, IsNil)
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c.Assert(result["ismaster"], Equals, true)
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}
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func (s *S) TestSetModeMonotonicWriteOnIteration(c *C) {
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// Must necessarily connect to a slave, otherwise the
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// master connection will be available first.
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session, err := mgo.Dial("localhost:40012")
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c.Assert(err, IsNil)
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defer session.Close()
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session.SetMode(mgo.Monotonic, false)
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c.Assert(session.Mode(), Equals, mgo.Monotonic)
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coll1 := session.DB("mydb").C("mycoll1")
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coll2 := session.DB("mydb").C("mycoll2")
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ns := []int{40, 41, 42, 43, 44, 45, 46}
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for _, n := range ns {
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err := coll1.Insert(M{"n": n})
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c.Assert(err, IsNil)
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}
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// Release master so we can grab a slave again.
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session.Refresh()
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// Wait until synchronization is done.
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for {
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n, err := coll1.Count()
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c.Assert(err, IsNil)
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if n == len(ns) {
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break
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}
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}
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iter := coll1.Find(nil).Batch(2).Iter()
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i := 0
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m := M{}
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for iter.Next(&m) {
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i++
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if i > 3 {
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err := coll2.Insert(M{"n": 47 + i})
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c.Assert(err, IsNil)
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}
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}
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c.Assert(i, Equals, len(ns))
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}
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func (s *S) TestSetModeEventual(c *C) {
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// Must necessarily connect to a slave, otherwise the
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// master connection will be available first.
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session, err := mgo.Dial("localhost:40012")
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c.Assert(err, IsNil)
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defer session.Close()
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session.SetMode(mgo.Eventual, false)
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c.Assert(session.Mode(), Equals, mgo.Eventual)
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result := M{}
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err = session.Run("ismaster", &result)
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c.Assert(err, IsNil)
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c.Assert(result["ismaster"], Equals, false)
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coll := session.DB("mydb").C("mycoll")
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err = coll.Insert(M{"a": 1})
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c.Assert(err, IsNil)
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result = M{}
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err = session.Run("ismaster", &result)
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c.Assert(err, IsNil)
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c.Assert(result["ismaster"], Equals, false)
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// Wait since the sync also uses sockets.
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for len(session.LiveServers()) != 3 {
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c.Log("Waiting for cluster sync to finish...")
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time.Sleep(5e8)
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}
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stats := mgo.GetStats()
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c.Assert(stats.MasterConns, Equals, 1)
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c.Assert(stats.SlaveConns, Equals, 2)
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c.Assert(stats.SocketsInUse, Equals, 0)
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}
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func (s *S) TestSetModeEventualAfterStrong(c *C) {
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// Test that a strong session shifting to an eventual
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// one preserves the socket untouched.
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session, err := mgo.Dial("localhost:40012")
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c.Assert(err, IsNil)
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defer session.Close()
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// Insert something to force a connection to the master.
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coll := session.DB("mydb").C("mycoll")
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err = coll.Insert(M{"a": 1})
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c.Assert(err, IsNil)
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session.SetMode(mgo.Eventual, false)
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// Wait since the sync also uses sockets.
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for len(session.LiveServers()) != 3 {
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c.Log("Waiting for cluster sync to finish...")
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time.Sleep(5e8)
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}
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// Master socket should still be reserved.
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stats := mgo.GetStats()
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c.Assert(stats.SocketsInUse, Equals, 1)
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// Confirm it's the master even though it's Eventual by now.
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result := M{}
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cmd := session.DB("admin").C("$cmd")
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err = cmd.Find(M{"ismaster": 1}).One(&result)
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c.Assert(err, IsNil)
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c.Assert(result["ismaster"], Equals, true)
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session.SetMode(mgo.Eventual, true)
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stats = mgo.GetStats()
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c.Assert(stats.SocketsInUse, Equals, 0)
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}
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func (s *S) TestPrimaryShutdownStrong(c *C) {
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if *fast {
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c.Skip("-fast")
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}
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session, err := mgo.Dial("localhost:40021")
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c.Assert(err, IsNil)
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defer session.Close()
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// With strong consistency, this will open a socket to the master.
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result := &struct{ Host string }{}
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err = session.Run("serverStatus", result)
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c.Assert(err, IsNil)
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// Kill the master.
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host := result.Host
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s.Stop(host)
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// This must fail, since the connection was broken.
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err = session.Run("serverStatus", result)
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c.Assert(err, Equals, io.EOF)
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// With strong consistency, it fails again until reset.
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err = session.Run("serverStatus", result)
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c.Assert(err, Equals, io.EOF)
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session.Refresh()
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// Now we should be able to talk to the new master.
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// Increase the timeout since this may take quite a while.
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session.SetSyncTimeout(3 * time.Minute)
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err = session.Run("serverStatus", result)
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c.Assert(err, IsNil)
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c.Assert(result.Host, Not(Equals), host)
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// Insert some data to confirm it's indeed a master.
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err = session.DB("mydb").C("mycoll").Insert(M{"n": 42})
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c.Assert(err, IsNil)
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}
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func (s *S) TestPrimaryHiccup(c *C) {
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if *fast {
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c.Skip("-fast")
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}
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session, err := mgo.Dial("localhost:40021")
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c.Assert(err, IsNil)
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defer session.Close()
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// With strong consistency, this will open a socket to the master.
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result := &struct{ Host string }{}
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err = session.Run("serverStatus", result)
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c.Assert(err, IsNil)
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// Establish a few extra sessions to create spare sockets to
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// the master. This increases a bit the chances of getting an
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// incorrect cached socket.
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var sessions []*mgo.Session
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for i := 0; i < 20; i++ {
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sessions = append(sessions, session.Copy())
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err = sessions[len(sessions)-1].Run("serverStatus", result)
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c.Assert(err, IsNil)
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}
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for i := range sessions {
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sessions[i].Close()
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}
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// Kill the master, but bring it back immediatelly.
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host := result.Host
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s.Stop(host)
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s.StartAll()
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// This must fail, since the connection was broken.
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err = session.Run("serverStatus", result)
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c.Assert(err, Equals, io.EOF)
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// With strong consistency, it fails again until reset.
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err = session.Run("serverStatus", result)
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c.Assert(err, Equals, io.EOF)
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session.Refresh()
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// Now we should be able to talk to the new master.
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// Increase the timeout since this may take quite a while.
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session.SetSyncTimeout(3 * time.Minute)
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|
|
// Insert some data to confirm it's indeed a master.
|
|
err = session.DB("mydb").C("mycoll").Insert(M{"n": 42})
|
|
c.Assert(err, IsNil)
|
|
}
|
|
|
|
func (s *S) TestPrimaryShutdownMonotonic(c *C) {
|
|
if *fast {
|
|
c.Skip("-fast")
|
|
}
|
|
|
|
session, err := mgo.Dial("localhost:40021")
|
|
c.Assert(err, IsNil)
|
|
defer session.Close()
|
|
|
|
session.SetMode(mgo.Monotonic, true)
|
|
|
|
// Insert something to force a switch to the master.
|
|
coll := session.DB("mydb").C("mycoll")
|
|
err = coll.Insert(M{"a": 1})
|
|
c.Assert(err, IsNil)
|
|
|
|
// Wait a bit for this to be synchronized to slaves.
|
|
time.Sleep(3 * time.Second)
|
|
|
|
result := &struct{ Host string }{}
|
|
err = session.Run("serverStatus", result)
|
|
c.Assert(err, IsNil)
|
|
|
|
// Kill the master.
|
|
host := result.Host
|
|
s.Stop(host)
|
|
|
|
// This must fail, since the connection was broken.
|
|
err = session.Run("serverStatus", result)
|
|
c.Assert(err, Equals, io.EOF)
|
|
|
|
// With monotonic consistency, it fails again until reset.
|
|
err = session.Run("serverStatus", result)
|
|
c.Assert(err, Equals, io.EOF)
|
|
|
|
session.Refresh()
|
|
|
|
// Now we should be able to talk to the new master.
|
|
err = session.Run("serverStatus", result)
|
|
c.Assert(err, IsNil)
|
|
c.Assert(result.Host, Not(Equals), host)
|
|
}
|
|
|
|
func (s *S) TestPrimaryShutdownMonotonicWithSlave(c *C) {
|
|
if *fast {
|
|
c.Skip("-fast")
|
|
}
|
|
|
|
session, err := mgo.Dial("localhost:40021")
|
|
c.Assert(err, IsNil)
|
|
defer session.Close()
|
|
|
|
ssresult := &struct{ Host string }{}
|
|
imresult := &struct{ IsMaster bool }{}
|
|
|
|
// Figure the master while still using the strong session.
|
|
err = session.Run("serverStatus", ssresult)
|
|
c.Assert(err, IsNil)
|
|
err = session.Run("isMaster", imresult)
|
|
c.Assert(err, IsNil)
|
|
master := ssresult.Host
|
|
c.Assert(imresult.IsMaster, Equals, true, Commentf("%s is not the master", master))
|
|
|
|
// Create new monotonic session with an explicit address to ensure
|
|
// a slave is synchronized before the master, otherwise a connection
|
|
// with the master may be used below for lack of other options.
|
|
var addr string
|
|
switch {
|
|
case strings.HasSuffix(ssresult.Host, ":40021"):
|
|
addr = "localhost:40022"
|
|
case strings.HasSuffix(ssresult.Host, ":40022"):
|
|
addr = "localhost:40021"
|
|
case strings.HasSuffix(ssresult.Host, ":40023"):
|
|
addr = "localhost:40021"
|
|
default:
|
|
c.Fatal("Unknown host: ", ssresult.Host)
|
|
}
|
|
|
|
session, err = mgo.Dial(addr)
|
|
c.Assert(err, IsNil)
|
|
defer session.Close()
|
|
|
|
session.SetMode(mgo.Monotonic, true)
|
|
|
|
// Check the address of the socket associated with the monotonic session.
|
|
c.Log("Running serverStatus and isMaster with monotonic session")
|
|
err = session.Run("serverStatus", ssresult)
|
|
c.Assert(err, IsNil)
|
|
err = session.Run("isMaster", imresult)
|
|
c.Assert(err, IsNil)
|
|
slave := ssresult.Host
|
|
c.Assert(imresult.IsMaster, Equals, false, Commentf("%s is not a slave", slave))
|
|
|
|
c.Assert(master, Not(Equals), slave)
|
|
|
|
// Kill the master.
|
|
s.Stop(master)
|
|
|
|
// Session must still be good, since we were talking to a slave.
|
|
err = session.Run("serverStatus", ssresult)
|
|
c.Assert(err, IsNil)
|
|
|
|
c.Assert(ssresult.Host, Equals, slave,
|
|
Commentf("Monotonic session moved from %s to %s", slave, ssresult.Host))
|
|
|
|
// If we try to insert something, it'll have to hold until the new
|
|
// master is available to move the connection, and work correctly.
|
|
coll := session.DB("mydb").C("mycoll")
|
|
err = coll.Insert(M{"a": 1})
|
|
c.Assert(err, IsNil)
|
|
|
|
// Must now be talking to the new master.
|
|
err = session.Run("serverStatus", ssresult)
|
|
c.Assert(err, IsNil)
|
|
err = session.Run("isMaster", imresult)
|
|
c.Assert(err, IsNil)
|
|
c.Assert(imresult.IsMaster, Equals, true, Commentf("%s is not the master", master))
|
|
|
|
// ... which is not the old one, since it's still dead.
|
|
c.Assert(ssresult.Host, Not(Equals), master)
|
|
}
|
|
|
|
func (s *S) TestPrimaryShutdownEventual(c *C) {
|
|
if *fast {
|
|
c.Skip("-fast")
|
|
}
|
|
|
|
session, err := mgo.Dial("localhost:40021")
|
|
c.Assert(err, IsNil)
|
|
defer session.Close()
|
|
|
|
result := &struct{ Host string }{}
|
|
err = session.Run("serverStatus", result)
|
|
c.Assert(err, IsNil)
|
|
master := result.Host
|
|
|
|
session.SetMode(mgo.Eventual, true)
|
|
|
|
// Should connect to the master when needed.
|
|
coll := session.DB("mydb").C("mycoll")
|
|
err = coll.Insert(M{"a": 1})
|
|
c.Assert(err, IsNil)
|
|
|
|
// Wait a bit for this to be synchronized to slaves.
|
|
time.Sleep(3 * time.Second)
|
|
|
|
// Kill the master.
|
|
s.Stop(master)
|
|
|
|
// Should still work, with the new master now.
|
|
coll = session.DB("mydb").C("mycoll")
|
|
err = coll.Insert(M{"a": 1})
|
|
c.Assert(err, IsNil)
|
|
|
|
err = session.Run("serverStatus", result)
|
|
c.Assert(err, IsNil)
|
|
c.Assert(result.Host, Not(Equals), master)
|
|
}
|
|
|
|
func (s *S) TestPreserveSocketCountOnSync(c *C) {
|
|
if *fast {
|
|
c.Skip("-fast")
|
|
}
|
|
|
|
session, err := mgo.Dial("localhost:40011")
|
|
c.Assert(err, IsNil)
|
|
defer session.Close()
|
|
|
|
stats := mgo.GetStats()
|
|
for stats.MasterConns+stats.SlaveConns != 3 {
|
|
stats = mgo.GetStats()
|
|
c.Log("Waiting for all connections to be established...")
|
|
time.Sleep(5e8)
|
|
}
|
|
|
|
c.Assert(stats.SocketsAlive, Equals, 3)
|
|
|
|
// Kill the master (with rs1, 'a' is always the master).
|
|
s.Stop("localhost:40011")
|
|
|
|
// Wait for the logic to run for a bit and bring it back.
|
|
startedAll := make(chan bool)
|
|
go func() {
|
|
time.Sleep(5e9)
|
|
s.StartAll()
|
|
startedAll <- true
|
|
}()
|
|
|
|
// Do not allow the test to return before the goroutine above is done.
|
|
defer func() {
|
|
<-startedAll
|
|
}()
|
|
|
|
// Do an action to kick the resync logic in, and also to
|
|
// wait until the cluster recognizes the server is back.
|
|
result := struct{ Ok bool }{}
|
|
err = session.Run("getLastError", &result)
|
|
c.Assert(err, IsNil)
|
|
c.Assert(result.Ok, Equals, true)
|
|
|
|
for i := 0; i != 20; i++ {
|
|
stats = mgo.GetStats()
|
|
if stats.SocketsAlive == 3 {
|
|
break
|
|
}
|
|
c.Logf("Waiting for 3 sockets alive, have %d", stats.SocketsAlive)
|
|
time.Sleep(5e8)
|
|
}
|
|
|
|
// Ensure the number of sockets is preserved after syncing.
|
|
stats = mgo.GetStats()
|
|
c.Assert(stats.SocketsAlive, Equals, 3)
|
|
c.Assert(stats.SocketsInUse, Equals, 1)
|
|
c.Assert(stats.SocketRefs, Equals, 1)
|
|
}
|
|
|
|
// Connect to the master of a deployment with a single server,
|
|
// run an insert, and then ensure the insert worked and that a
|
|
// single connection was established.
|
|
func (s *S) TestTopologySyncWithSingleMaster(c *C) {
|
|
// Use hostname here rather than IP, to make things trickier.
|
|
session, err := mgo.Dial("localhost:40001")
|
|
c.Assert(err, IsNil)
|
|
defer session.Close()
|
|
|
|
coll := session.DB("mydb").C("mycoll")
|
|
err = coll.Insert(M{"a": 1, "b": 2})
|
|
c.Assert(err, IsNil)
|
|
|
|
// One connection used for discovery. Master socket recycled for
|
|
// insert. Socket is reserved after insert.
|
|
stats := mgo.GetStats()
|
|
c.Assert(stats.MasterConns, Equals, 1)
|
|
c.Assert(stats.SlaveConns, Equals, 0)
|
|
c.Assert(stats.SocketsInUse, Equals, 1)
|
|
|
|
// Refresh session and socket must be released.
|
|
session.Refresh()
|
|
stats = mgo.GetStats()
|
|
c.Assert(stats.SocketsInUse, Equals, 0)
|
|
}
|
|
|
|
func (s *S) TestTopologySyncWithSlaveSeed(c *C) {
|
|
// That's supposed to be a slave. Must run discovery
|
|
// and find out master to insert successfully.
|
|
session, err := mgo.Dial("localhost:40012")
|
|
c.Assert(err, IsNil)
|
|
defer session.Close()
|
|
|
|
coll := session.DB("mydb").C("mycoll")
|
|
coll.Insert(M{"a": 1, "b": 2})
|
|
|
|
result := struct{ Ok bool }{}
|
|
err = session.Run("getLastError", &result)
|
|
c.Assert(err, IsNil)
|
|
c.Assert(result.Ok, Equals, true)
|
|
|
|
// One connection to each during discovery. Master
|
|
// socket recycled for insert.
|
|
stats := mgo.GetStats()
|
|
c.Assert(stats.MasterConns, Equals, 1)
|
|
c.Assert(stats.SlaveConns, Equals, 2)
|
|
|
|
// Only one socket reference alive, in the master socket owned
|
|
// by the above session.
|
|
c.Assert(stats.SocketsInUse, Equals, 1)
|
|
|
|
// Refresh it, and it must be gone.
|
|
session.Refresh()
|
|
stats = mgo.GetStats()
|
|
c.Assert(stats.SocketsInUse, Equals, 0)
|
|
}
|
|
|
|
func (s *S) TestSyncTimeout(c *C) {
|
|
if *fast {
|
|
c.Skip("-fast")
|
|
}
|
|
|
|
session, err := mgo.Dial("localhost:40001")
|
|
c.Assert(err, IsNil)
|
|
defer session.Close()
|
|
|
|
s.Stop("localhost:40001")
|
|
|
|
timeout := 3 * time.Second
|
|
session.SetSyncTimeout(timeout)
|
|
started := time.Now()
|
|
|
|
// Do something.
|
|
result := struct{ Ok bool }{}
|
|
err = session.Run("getLastError", &result)
|
|
c.Assert(err, ErrorMatches, "no reachable servers")
|
|
c.Assert(started.Before(time.Now().Add(-timeout)), Equals, true)
|
|
c.Assert(started.After(time.Now().Add(-timeout*2)), Equals, true)
|
|
}
|
|
|
|
func (s *S) TestDialWithTimeout(c *C) {
|
|
if *fast {
|
|
c.Skip("-fast")
|
|
}
|
|
|
|
timeout := 2 * time.Second
|
|
started := time.Now()
|
|
|
|
// 40009 isn't used by the test servers.
|
|
session, err := mgo.DialWithTimeout("localhost:40009", timeout)
|
|
if session != nil {
|
|
session.Close()
|
|
}
|
|
c.Assert(err, ErrorMatches, "no reachable servers")
|
|
c.Assert(session, IsNil)
|
|
c.Assert(started.Before(time.Now().Add(-timeout)), Equals, true)
|
|
c.Assert(started.After(time.Now().Add(-timeout*2)), Equals, true)
|
|
}
|
|
|
|
func (s *S) TestSocketTimeout(c *C) {
|
|
if *fast {
|
|
c.Skip("-fast")
|
|
}
|
|
|
|
session, err := mgo.Dial("localhost:40001")
|
|
c.Assert(err, IsNil)
|
|
defer session.Close()
|
|
|
|
s.Freeze("localhost:40001")
|
|
|
|
timeout := 3 * time.Second
|
|
session.SetSocketTimeout(timeout)
|
|
started := time.Now()
|
|
|
|
// Do something.
|
|
result := struct{ Ok bool }{}
|
|
err = session.Run("getLastError", &result)
|
|
c.Assert(err, ErrorMatches, ".*: i/o timeout")
|
|
c.Assert(started.Before(time.Now().Add(-timeout)), Equals, true)
|
|
c.Assert(started.After(time.Now().Add(-timeout*2)), Equals, true)
|
|
}
|
|
|
|
func (s *S) TestSocketTimeoutOnDial(c *C) {
|
|
if *fast {
|
|
c.Skip("-fast")
|
|
}
|
|
|
|
timeout := 1 * time.Second
|
|
|
|
defer mgo.HackSyncSocketTimeout(timeout)()
|
|
|
|
s.Freeze("localhost:40001")
|
|
|
|
started := time.Now()
|
|
|
|
session, err := mgo.DialWithTimeout("localhost:40001", timeout)
|
|
c.Assert(err, ErrorMatches, "no reachable servers")
|
|
c.Assert(session, IsNil)
|
|
|
|
c.Assert(started.Before(time.Now().Add(-timeout)), Equals, true)
|
|
c.Assert(started.After(time.Now().Add(-20*time.Second)), Equals, true)
|
|
}
|
|
|
|
func (s *S) TestSocketTimeoutOnInactiveSocket(c *C) {
|
|
if *fast {
|
|
c.Skip("-fast")
|
|
}
|
|
|
|
session, err := mgo.Dial("localhost:40001")
|
|
c.Assert(err, IsNil)
|
|
defer session.Close()
|
|
|
|
timeout := 2 * time.Second
|
|
session.SetSocketTimeout(timeout)
|
|
|
|
// Do something that relies on the timeout and works.
|
|
c.Assert(session.Ping(), IsNil)
|
|
|
|
// Freeze and wait for the timeout to go by.
|
|
s.Freeze("localhost:40001")
|
|
time.Sleep(timeout + 500*time.Millisecond)
|
|
s.Thaw("localhost:40001")
|
|
|
|
// Do something again. The timeout above should not have killed
|
|
// the socket as there was nothing to be done.
|
|
c.Assert(session.Ping(), IsNil)
|
|
}
|
|
|
|
func (s *S) TestDirect(c *C) {
|
|
session, err := mgo.Dial("localhost:40012?connect=direct")
|
|
c.Assert(err, IsNil)
|
|
defer session.Close()
|
|
|
|
// We know that server is a slave.
|
|
session.SetMode(mgo.Monotonic, true)
|
|
|
|
result := &struct{ Host string }{}
|
|
err = session.Run("serverStatus", result)
|
|
c.Assert(err, IsNil)
|
|
c.Assert(strings.HasSuffix(result.Host, ":40012"), Equals, true)
|
|
|
|
stats := mgo.GetStats()
|
|
c.Assert(stats.SocketsAlive, Equals, 1)
|
|
c.Assert(stats.SocketsInUse, Equals, 1)
|
|
c.Assert(stats.SocketRefs, Equals, 1)
|
|
|
|
// We've got no master, so it'll timeout.
|
|
session.SetSyncTimeout(5e8 * time.Nanosecond)
|
|
|
|
coll := session.DB("mydb").C("mycoll")
|
|
err = coll.Insert(M{"test": 1})
|
|
c.Assert(err, ErrorMatches, "no reachable servers")
|
|
|
|
// Writing to the local database is okay.
|
|
coll = session.DB("local").C("mycoll")
|
|
defer coll.RemoveAll(nil)
|
|
id := bson.NewObjectId()
|
|
err = coll.Insert(M{"_id": id})
|
|
c.Assert(err, IsNil)
|
|
|
|
// Data was stored in the right server.
|
|
n, err := coll.Find(M{"_id": id}).Count()
|
|
c.Assert(err, IsNil)
|
|
c.Assert(n, Equals, 1)
|
|
|
|
// Server hasn't changed.
|
|
result.Host = ""
|
|
err = session.Run("serverStatus", result)
|
|
c.Assert(err, IsNil)
|
|
c.Assert(strings.HasSuffix(result.Host, ":40012"), Equals, true)
|
|
}
|
|
|
|
func (s *S) TestDirectToUnknownStateMember(c *C) {
|
|
session, err := mgo.Dial("localhost:40041?connect=direct")
|
|
c.Assert(err, IsNil)
|
|
defer session.Close()
|
|
|
|
session.SetMode(mgo.Monotonic, true)
|
|
|
|
result := &struct{ Host string }{}
|
|
err = session.Run("serverStatus", result)
|
|
c.Assert(err, IsNil)
|
|
c.Assert(strings.HasSuffix(result.Host, ":40041"), Equals, true)
|
|
|
|
// We've got no master, so it'll timeout.
|
|
session.SetSyncTimeout(5e8 * time.Nanosecond)
|
|
|
|
coll := session.DB("mydb").C("mycoll")
|
|
err = coll.Insert(M{"test": 1})
|
|
c.Assert(err, ErrorMatches, "no reachable servers")
|
|
|
|
// Slave is still reachable.
|
|
result.Host = ""
|
|
err = session.Run("serverStatus", result)
|
|
c.Assert(err, IsNil)
|
|
c.Assert(strings.HasSuffix(result.Host, ":40041"), Equals, true)
|
|
}
|
|
|
|
func (s *S) TestFailFast(c *C) {
|
|
info := mgo.DialInfo{
|
|
Addrs: []string{"localhost:99999"},
|
|
Timeout: 5 * time.Second,
|
|
FailFast: true,
|
|
}
|
|
|
|
started := time.Now()
|
|
|
|
_, err := mgo.DialWithInfo(&info)
|
|
c.Assert(err, ErrorMatches, "no reachable servers")
|
|
|
|
c.Assert(started.After(time.Now().Add(-time.Second)), Equals, true)
|
|
}
|
|
|
|
type OpCounters struct {
|
|
Insert int
|
|
Query int
|
|
Update int
|
|
Delete int
|
|
GetMore int
|
|
Command int
|
|
}
|
|
|
|
func getOpCounters(server string) (c *OpCounters, err error) {
|
|
session, err := mgo.Dial(server + "?connect=direct")
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer session.Close()
|
|
session.SetMode(mgo.Monotonic, true)
|
|
result := struct{ OpCounters }{}
|
|
err = session.Run("serverStatus", &result)
|
|
return &result.OpCounters, err
|
|
}
|
|
|
|
func (s *S) TestMonotonicSlaveOkFlagWithMongos(c *C) {
|
|
session, err := mgo.Dial("localhost:40021")
|
|
c.Assert(err, IsNil)
|
|
defer session.Close()
|
|
|
|
ssresult := &struct{ Host string }{}
|
|
imresult := &struct{ IsMaster bool }{}
|
|
|
|
// Figure the master while still using the strong session.
|
|
err = session.Run("serverStatus", ssresult)
|
|
c.Assert(err, IsNil)
|
|
err = session.Run("isMaster", imresult)
|
|
c.Assert(err, IsNil)
|
|
master := ssresult.Host
|
|
c.Assert(imresult.IsMaster, Equals, true, Commentf("%s is not the master", master))
|
|
|
|
// Collect op counters for everyone.
|
|
opc21a, err := getOpCounters("localhost:40021")
|
|
c.Assert(err, IsNil)
|
|
opc22a, err := getOpCounters("localhost:40022")
|
|
c.Assert(err, IsNil)
|
|
opc23a, err := getOpCounters("localhost:40023")
|
|
c.Assert(err, IsNil)
|
|
|
|
// Do a SlaveOk query through MongoS
|
|
|
|
mongos, err := mgo.Dial("localhost:40202")
|
|
c.Assert(err, IsNil)
|
|
defer mongos.Close()
|
|
|
|
mongos.SetMode(mgo.Monotonic, true)
|
|
|
|
coll := mongos.DB("mydb").C("mycoll")
|
|
result := &struct{}{}
|
|
for i := 0; i != 5; i++ {
|
|
err := coll.Find(nil).One(result)
|
|
c.Assert(err, Equals, mgo.ErrNotFound)
|
|
}
|
|
|
|
// Collect op counters for everyone again.
|
|
opc21b, err := getOpCounters("localhost:40021")
|
|
c.Assert(err, IsNil)
|
|
opc22b, err := getOpCounters("localhost:40022")
|
|
c.Assert(err, IsNil)
|
|
opc23b, err := getOpCounters("localhost:40023")
|
|
c.Assert(err, IsNil)
|
|
|
|
masterPort := master[strings.Index(master, ":")+1:]
|
|
|
|
var masterDelta, slaveDelta int
|
|
switch masterPort {
|
|
case "40021":
|
|
masterDelta = opc21b.Query - opc21a.Query
|
|
slaveDelta = (opc22b.Query - opc22a.Query) + (opc23b.Query - opc23a.Query)
|
|
case "40022":
|
|
masterDelta = opc22b.Query - opc22a.Query
|
|
slaveDelta = (opc21b.Query - opc21a.Query) + (opc23b.Query - opc23a.Query)
|
|
case "40023":
|
|
masterDelta = opc23b.Query - opc23a.Query
|
|
slaveDelta = (opc21b.Query - opc21a.Query) + (opc22b.Query - opc22a.Query)
|
|
default:
|
|
c.Fatal("Uh?")
|
|
}
|
|
|
|
c.Check(masterDelta, Equals, 0) // Just the counting itself.
|
|
c.Check(slaveDelta, Equals, 5) // The counting for both, plus 5 queries above.
|
|
}
|
|
|
|
func (s *S) TestRemovalOfClusterMember(c *C) {
|
|
if *fast {
|
|
c.Skip("-fast")
|
|
}
|
|
|
|
master, err := mgo.Dial("localhost:40021")
|
|
c.Assert(err, IsNil)
|
|
defer master.Close()
|
|
|
|
// Wait for cluster to fully sync up.
|
|
for i := 0; i < 10; i++ {
|
|
if len(master.LiveServers()) == 3 {
|
|
break
|
|
}
|
|
time.Sleep(5e8)
|
|
}
|
|
if len(master.LiveServers()) != 3 {
|
|
c.Fatalf("Test started with bad cluster state: %v", master.LiveServers())
|
|
}
|
|
|
|
result := &struct {
|
|
IsMaster bool
|
|
Me string
|
|
}{}
|
|
slave := master.Copy()
|
|
slave.SetMode(mgo.Monotonic, true) // Monotonic can hold a non-master socket persistently.
|
|
err = slave.Run("isMaster", result)
|
|
c.Assert(err, IsNil)
|
|
c.Assert(result.IsMaster, Equals, false)
|
|
slaveAddr := result.Me
|
|
|
|
defer func() {
|
|
master.Refresh()
|
|
master.Run(bson.D{{"$eval", `rs.add("` + slaveAddr + `")`}}, nil)
|
|
master.Close()
|
|
slave.Close()
|
|
}()
|
|
|
|
c.Logf("========== Removing slave: %s ==========", slaveAddr)
|
|
|
|
master.Run(bson.D{{"$eval", `rs.remove("` + slaveAddr + `")`}}, nil)
|
|
err = master.Ping()
|
|
c.Assert(err, Equals, io.EOF)
|
|
|
|
master.Refresh()
|
|
|
|
// Give the cluster a moment to catch up by doing a roundtrip to the master.
|
|
err = master.Ping()
|
|
c.Assert(err, IsNil)
|
|
|
|
time.Sleep(3e9)
|
|
|
|
// This must fail since the slave has been taken off the cluster.
|
|
err = slave.Ping()
|
|
c.Assert(err, NotNil)
|
|
|
|
for i := 0; i < 15; i++ {
|
|
if len(master.LiveServers()) == 2 {
|
|
break
|
|
}
|
|
time.Sleep(time.Second)
|
|
}
|
|
live := master.LiveServers()
|
|
if len(live) != 2 {
|
|
c.Errorf("Removed server still considered live: %#s", live)
|
|
}
|
|
|
|
c.Log("========== Test succeeded. ==========")
|
|
}
|
|
|
|
func (s *S) TestSocketLimit(c *C) {
|
|
if *fast {
|
|
c.Skip("-fast")
|
|
}
|
|
const socketLimit = 64
|
|
restore := mgo.HackSocketsPerServer(socketLimit)
|
|
defer restore()
|
|
|
|
session, err := mgo.Dial("localhost:40011")
|
|
c.Assert(err, IsNil)
|
|
defer session.Close()
|
|
|
|
stats := mgo.GetStats()
|
|
for stats.MasterConns+stats.SlaveConns != 3 {
|
|
stats = mgo.GetStats()
|
|
c.Log("Waiting for all connections to be established...")
|
|
time.Sleep(5e8)
|
|
}
|
|
c.Assert(stats.SocketsAlive, Equals, 3)
|
|
|
|
// Consume the whole limit for the master.
|
|
var master []*mgo.Session
|
|
for i := 0; i < socketLimit; i++ {
|
|
s := session.Copy()
|
|
defer s.Close()
|
|
err := s.Ping()
|
|
c.Assert(err, IsNil)
|
|
master = append(master, s)
|
|
}
|
|
|
|
before := time.Now()
|
|
go func() {
|
|
time.Sleep(3e9)
|
|
master[0].Refresh()
|
|
}()
|
|
|
|
// Now a single ping must block, since it would need another
|
|
// connection to the master, over the limit. Once the goroutine
|
|
// above releases its socket, it should move on.
|
|
session.Ping()
|
|
delay := time.Now().Sub(before)
|
|
c.Assert(delay > 3e9, Equals, true)
|
|
c.Assert(delay < 6e9, Equals, true)
|
|
}
|
|
|
|
func (s *S) TestSetModeEventualIterBug(c *C) {
|
|
session1, err := mgo.Dial("localhost:40011")
|
|
c.Assert(err, IsNil)
|
|
defer session1.Close()
|
|
|
|
session1.SetMode(mgo.Eventual, false)
|
|
|
|
coll1 := session1.DB("mydb").C("mycoll")
|
|
|
|
const N = 100
|
|
for i := 0; i < N; i++ {
|
|
err = coll1.Insert(M{"_id": i})
|
|
c.Assert(err, IsNil)
|
|
}
|
|
|
|
c.Logf("Waiting until secondary syncs")
|
|
for {
|
|
n, err := coll1.Count()
|
|
c.Assert(err, IsNil)
|
|
if n == N {
|
|
c.Logf("Found all")
|
|
break
|
|
}
|
|
}
|
|
|
|
session2, err := mgo.Dial("localhost:40011")
|
|
c.Assert(err, IsNil)
|
|
defer session2.Close()
|
|
|
|
session2.SetMode(mgo.Eventual, false)
|
|
|
|
coll2 := session2.DB("mydb").C("mycoll")
|
|
|
|
i := 0
|
|
iter := coll2.Find(nil).Batch(10).Iter()
|
|
var result struct{}
|
|
for iter.Next(&result) {
|
|
i++
|
|
}
|
|
c.Assert(iter.Close(), Equals, nil)
|
|
c.Assert(i, Equals, N)
|
|
}
|
|
|
|
func (s *S) TestCustomDialOld(c *C) {
|
|
dials := make(chan bool, 16)
|
|
dial := func(addr net.Addr) (net.Conn, error) {
|
|
tcpaddr, ok := addr.(*net.TCPAddr)
|
|
if !ok {
|
|
return nil, fmt.Errorf("unexpected address type: %T", addr)
|
|
}
|
|
dials <- true
|
|
return net.DialTCP("tcp", nil, tcpaddr)
|
|
}
|
|
info := mgo.DialInfo{
|
|
Addrs: []string{"localhost:40012"},
|
|
Dial: dial,
|
|
}
|
|
|
|
// Use hostname here rather than IP, to make things trickier.
|
|
session, err := mgo.DialWithInfo(&info)
|
|
c.Assert(err, IsNil)
|
|
defer session.Close()
|
|
|
|
const N = 3
|
|
for i := 0; i < N; i++ {
|
|
select {
|
|
case <-dials:
|
|
case <-time.After(5 * time.Second):
|
|
c.Fatalf("expected %d dials, got %d", N, i)
|
|
}
|
|
}
|
|
select {
|
|
case <-dials:
|
|
c.Fatalf("got more dials than expected")
|
|
case <-time.After(100 * time.Millisecond):
|
|
}
|
|
}
|
|
|
|
func (s *S) TestCustomDialNew(c *C) {
|
|
dials := make(chan bool, 16)
|
|
dial := func(addr *mgo.ServerAddr) (net.Conn, error) {
|
|
dials <- true
|
|
if addr.TCPAddr().Port == 40012 {
|
|
c.Check(addr.String(), Equals, "localhost:40012")
|
|
}
|
|
return net.DialTCP("tcp", nil, addr.TCPAddr())
|
|
}
|
|
info := mgo.DialInfo{
|
|
Addrs: []string{"localhost:40012"},
|
|
DialServer: dial,
|
|
}
|
|
|
|
// Use hostname here rather than IP, to make things trickier.
|
|
session, err := mgo.DialWithInfo(&info)
|
|
c.Assert(err, IsNil)
|
|
defer session.Close()
|
|
|
|
const N = 3
|
|
for i := 0; i < N; i++ {
|
|
select {
|
|
case <-dials:
|
|
case <-time.After(5 * time.Second):
|
|
c.Fatalf("expected %d dials, got %d", N, i)
|
|
}
|
|
}
|
|
select {
|
|
case <-dials:
|
|
c.Fatalf("got more dials than expected")
|
|
case <-time.After(100 * time.Millisecond):
|
|
}
|
|
}
|
|
|
|
func (s *S) TestPrimaryShutdownOnAuthShard(c *C) {
|
|
if *fast {
|
|
c.Skip("-fast")
|
|
}
|
|
|
|
// Dial the shard.
|
|
session, err := mgo.Dial("localhost:40203")
|
|
c.Assert(err, IsNil)
|
|
defer session.Close()
|
|
|
|
// Login and insert something to make it more realistic.
|
|
session.DB("admin").Login("root", "rapadura")
|
|
coll := session.DB("mydb").C("mycoll")
|
|
err = coll.Insert(bson.M{"n": 1})
|
|
c.Assert(err, IsNil)
|
|
|
|
// Dial the replica set to figure the master out.
|
|
rs, err := mgo.Dial("root:rapadura@localhost:40031")
|
|
c.Assert(err, IsNil)
|
|
defer rs.Close()
|
|
|
|
// With strong consistency, this will open a socket to the master.
|
|
result := &struct{ Host string }{}
|
|
err = rs.Run("serverStatus", result)
|
|
c.Assert(err, IsNil)
|
|
|
|
// Kill the master.
|
|
host := result.Host
|
|
s.Stop(host)
|
|
|
|
// This must fail, since the connection was broken.
|
|
err = rs.Run("serverStatus", result)
|
|
c.Assert(err, Equals, io.EOF)
|
|
|
|
// This won't work because the master just died.
|
|
err = coll.Insert(bson.M{"n": 2})
|
|
c.Assert(err, NotNil)
|
|
|
|
// Refresh session and wait for re-election.
|
|
session.Refresh()
|
|
for i := 0; i < 60; i++ {
|
|
err = coll.Insert(bson.M{"n": 3})
|
|
if err == nil {
|
|
break
|
|
}
|
|
c.Logf("Waiting for replica set to elect a new master. Last error: %v", err)
|
|
time.Sleep(500 * time.Millisecond)
|
|
}
|
|
c.Assert(err, IsNil)
|
|
|
|
count, err := coll.Count()
|
|
c.Assert(count > 1, Equals, true)
|
|
}
|
|
|
|
func (s *S) TestNearestSecondary(c *C) {
|
|
defer mgo.HackPingDelay(3 * time.Second)()
|
|
|
|
rs1a := "127.0.0.1:40011"
|
|
rs1b := "127.0.0.1:40012"
|
|
rs1c := "127.0.0.1:40013"
|
|
s.Freeze(rs1b)
|
|
|
|
session, err := mgo.Dial(rs1a)
|
|
c.Assert(err, IsNil)
|
|
defer session.Close()
|
|
|
|
// Wait for the sync up to run through the first couple of servers.
|
|
for len(session.LiveServers()) != 2 {
|
|
c.Log("Waiting for two servers to be alive...")
|
|
time.Sleep(100 * time.Millisecond)
|
|
}
|
|
|
|
// Extra delay to ensure the third server gets penalized.
|
|
time.Sleep(500 * time.Millisecond)
|
|
|
|
// Release third server.
|
|
s.Thaw(rs1b)
|
|
|
|
// Wait for it to come up.
|
|
for len(session.LiveServers()) != 3 {
|
|
c.Log("Waiting for all servers to be alive...")
|
|
time.Sleep(100 * time.Millisecond)
|
|
}
|
|
|
|
session.SetMode(mgo.Monotonic, true)
|
|
var result struct{ Host string }
|
|
|
|
// See which slave picks the line, several times to avoid chance.
|
|
for i := 0; i < 10; i++ {
|
|
session.Refresh()
|
|
err = session.Run("serverStatus", &result)
|
|
c.Assert(err, IsNil)
|
|
c.Assert(hostPort(result.Host), Equals, hostPort(rs1c))
|
|
}
|
|
|
|
if *fast {
|
|
// Don't hold back for several seconds.
|
|
return
|
|
}
|
|
|
|
// Now hold the other server for long enough to penalize it.
|
|
s.Freeze(rs1c)
|
|
time.Sleep(5 * time.Second)
|
|
s.Thaw(rs1c)
|
|
|
|
// Wait for the ping to be processed.
|
|
time.Sleep(500 * time.Millisecond)
|
|
|
|
// Repeating the test should now pick the former server consistently.
|
|
for i := 0; i < 10; i++ {
|
|
session.Refresh()
|
|
err = session.Run("serverStatus", &result)
|
|
c.Assert(err, IsNil)
|
|
c.Assert(hostPort(result.Host), Equals, hostPort(rs1b))
|
|
}
|
|
}
|
|
|
|
func (s *S) TestConnectCloseConcurrency(c *C) {
|
|
restore := mgo.HackPingDelay(500 * time.Millisecond)
|
|
defer restore()
|
|
var wg sync.WaitGroup
|
|
const n = 500
|
|
wg.Add(n)
|
|
for i := 0; i < n; i++ {
|
|
go func() {
|
|
defer wg.Done()
|
|
session, err := mgo.Dial("localhost:40001")
|
|
if err != nil {
|
|
c.Fatal(err)
|
|
}
|
|
time.Sleep(1)
|
|
session.Close()
|
|
}()
|
|
}
|
|
wg.Wait()
|
|
}
|
|
|
|
func (s *S) TestSelectServers(c *C) {
|
|
if !s.versionAtLeast(2, 2) {
|
|
c.Skip("read preferences introduced in 2.2")
|
|
}
|
|
|
|
session, err := mgo.Dial("localhost:40011")
|
|
c.Assert(err, IsNil)
|
|
defer session.Close()
|
|
|
|
session.SetMode(mgo.Eventual, true)
|
|
|
|
var result struct{ Host string }
|
|
|
|
session.Refresh()
|
|
session.SelectServers(bson.D{{"rs1", "b"}})
|
|
err = session.Run("serverStatus", &result)
|
|
c.Assert(err, IsNil)
|
|
c.Assert(hostPort(result.Host), Equals, "40012")
|
|
|
|
session.Refresh()
|
|
session.SelectServers(bson.D{{"rs1", "c"}})
|
|
err = session.Run("serverStatus", &result)
|
|
c.Assert(err, IsNil)
|
|
c.Assert(hostPort(result.Host), Equals, "40013")
|
|
}
|
|
|
|
func (s *S) TestSelectServersWithMongos(c *C) {
|
|
if !s.versionAtLeast(2, 2) {
|
|
c.Skip("read preferences introduced in 2.2")
|
|
}
|
|
|
|
session, err := mgo.Dial("localhost:40021")
|
|
c.Assert(err, IsNil)
|
|
defer session.Close()
|
|
|
|
ssresult := &struct{ Host string }{}
|
|
imresult := &struct{ IsMaster bool }{}
|
|
|
|
// Figure the master while still using the strong session.
|
|
err = session.Run("serverStatus", ssresult)
|
|
c.Assert(err, IsNil)
|
|
err = session.Run("isMaster", imresult)
|
|
c.Assert(err, IsNil)
|
|
master := ssresult.Host
|
|
c.Assert(imresult.IsMaster, Equals, true, Commentf("%s is not the master", master))
|
|
|
|
var slave1, slave2 string
|
|
switch hostPort(master) {
|
|
case "40021":
|
|
slave1, slave2 = "b", "c"
|
|
case "40022":
|
|
slave1, slave2 = "a", "c"
|
|
case "40023":
|
|
slave1, slave2 = "a", "b"
|
|
}
|
|
|
|
// Collect op counters for everyone.
|
|
opc21a, err := getOpCounters("localhost:40021")
|
|
c.Assert(err, IsNil)
|
|
opc22a, err := getOpCounters("localhost:40022")
|
|
c.Assert(err, IsNil)
|
|
opc23a, err := getOpCounters("localhost:40023")
|
|
c.Assert(err, IsNil)
|
|
|
|
// Do a SlaveOk query through MongoS
|
|
mongos, err := mgo.Dial("localhost:40202")
|
|
c.Assert(err, IsNil)
|
|
defer mongos.Close()
|
|
|
|
mongos.SetMode(mgo.Monotonic, true)
|
|
|
|
mongos.Refresh()
|
|
mongos.SelectServers(bson.D{{"rs2", slave1}})
|
|
coll := mongos.DB("mydb").C("mycoll")
|
|
result := &struct{}{}
|
|
for i := 0; i != 5; i++ {
|
|
err := coll.Find(nil).One(result)
|
|
c.Assert(err, Equals, mgo.ErrNotFound)
|
|
}
|
|
|
|
mongos.Refresh()
|
|
mongos.SelectServers(bson.D{{"rs2", slave2}})
|
|
coll = mongos.DB("mydb").C("mycoll")
|
|
for i := 0; i != 7; i++ {
|
|
err := coll.Find(nil).One(result)
|
|
c.Assert(err, Equals, mgo.ErrNotFound)
|
|
}
|
|
|
|
// Collect op counters for everyone again.
|
|
opc21b, err := getOpCounters("localhost:40021")
|
|
c.Assert(err, IsNil)
|
|
opc22b, err := getOpCounters("localhost:40022")
|
|
c.Assert(err, IsNil)
|
|
opc23b, err := getOpCounters("localhost:40023")
|
|
c.Assert(err, IsNil)
|
|
|
|
switch hostPort(master) {
|
|
case "40021":
|
|
c.Check(opc21b.Query-opc21a.Query, Equals, 0)
|
|
c.Check(opc22b.Query-opc22a.Query, Equals, 5)
|
|
c.Check(opc23b.Query-opc23a.Query, Equals, 7)
|
|
case "40022":
|
|
c.Check(opc21b.Query-opc21a.Query, Equals, 5)
|
|
c.Check(opc22b.Query-opc22a.Query, Equals, 0)
|
|
c.Check(opc23b.Query-opc23a.Query, Equals, 7)
|
|
case "40023":
|
|
c.Check(opc21b.Query-opc21a.Query, Equals, 5)
|
|
c.Check(opc22b.Query-opc22a.Query, Equals, 7)
|
|
c.Check(opc23b.Query-opc23a.Query, Equals, 0)
|
|
default:
|
|
c.Fatal("Uh?")
|
|
}
|
|
}
|