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// data consistency after master-master
var baseName = "jstests_pair4test";
debug = function( o ) {
printjson( o );
}
ismaster = function( n ) {
var im = n.getDB( "admin" ).runCommand( { "ismaster" : 1 } );
print( "ismaster: " + tojson( im ) );
assert( im, "command ismaster failed" );
return im.ismaster;
}
connect = function() {
startMongoProgram( "mongobridge", "--port", lpPort, "--dest", "localhost:" + lPort );
startMongoProgram( "mongobridge", "--port", rpPort, "--dest", "localhost:" + rPort );
}
disconnect = function() {
stopMongoProgram( lpPort );
stopMongoProgram( rpPort );
}
write = function( m, n, id ) {
if ( id ) {
save = { _id:id, n:n };
} else {
save = { n:n };
}
m.getDB( baseName ).getCollection( baseName ).save( save );
}
check = function( m, n, id ) {
m.setSlaveOk();
if ( id ) {
find = { _id:id, n:n };
} else {
find = { n:n };
}
assert.soon( function() { return m.getDB( baseName ).getCollection( baseName ).find( find ).count() > 0; },
"failed waiting for " + m + " value of n to be " + n );
}
checkCount = function( m, c ) {
m.setSlaveOk();
assert.soon( function() {
actual = m.getDB( baseName ).getCollection( baseName ).find().count();
print( actual );
return c == actual; },
"count failed for " + m );
}
coll = function( m ) {
return m.getDB( baseName ).getCollection( baseName );
}
db2Coll = function( m ) {
return m.getDB( baseName + "_second" ).getCollection( baseName );
}
doTest = function( recover, newMaster, newSlave ) {
ports = allocatePorts( 5 );
aPort = ports[ 0 ];
lPort = ports[ 1 ];
lpPort = ports[ 2 ];
rPort = ports[ 3 ];
rpPort = ports[ 4 ];
// start normally
connect();
a = new MongodRunner( aPort, "/data/db/" + baseName + "-arbiter" );
l = new MongodRunner( lPort, "/data/db/" + baseName + "-left", "127.0.0.1:" + rpPort, "127.0.0.1:" + aPort );
r = new MongodRunner( rPort, "/data/db/" + baseName + "-right", "127.0.0.1:" + lpPort, "127.0.0.1:" + aPort );
pair = new ReplPair( l, r, a );
pair.start();
pair.waitForSteadyState();
firstMaster = pair.master();
firstSlave = pair.slave();
write( pair.master(), 0 );
write( pair.master(), 1 );
check( pair.slave(), 0 );
check( pair.slave(), 1 );
// now each can only talk to arbiter
disconnect();
pair.waitForSteadyState( [ 1, 1 ], null, true );
m = newMaster();
write( m, 10 );
write( m, 100, "a" );
coll( m ).update( {n:1}, {$set:{n:2}} );
db2Coll( m ).save( {n:500} );
db2Coll( m ).findOne();
s = newSlave();
write( s, 20 );
write( s, 200, "a" );
coll( s ).update( {n:1}, {n:1,m:3} );
db2Coll( s ).save( {_id:"a",n:600} );
db2Coll( s ).findOne();
// recover
recover();
nodes = [ pair.right(), pair.left() ];
nodes.forEach( function( x ) { checkCount( x, 5 ); } );
nodes.forEach( function( x ) { [ 0, 10, 20, 100 ].forEach( function( y ) { check( x, y ); } ); } );
checkM = function( c ) {
assert.soon( function() {
obj = coll( c ).findOne( {n:2} );
printjson( obj );
return obj.m == undefined;
}, "n:2 test for " + c + " failed" );
};
nodes.forEach( function( x ) { checkM( x ); } );
// check separate database
nodes.forEach( function( x ) { assert.soon( function() {
r = db2Coll( x ).findOne( {_id:"a"} );
debug( r );
if ( r == null ) {
return false;
}
return 600 == r.n;
} ) } );
ports.forEach( function( x ) { stopMongoProgram( x ); } );
}
// right will be master on recovery b/c both sides will have completed initial sync
debug( "basic test" );
doTest( function() {
connect();
pair.waitForSteadyState( [ 1, 0 ], pair.right().host, true );
}, function() { return pair.right(); }, function() { return pair.left(); } );
doRestartTest = function( signal ) {
doTest( function() {
if ( signal == 9 ) {
sleep( 3000 );
}
pair.killNode( firstMaster, signal );
connect();
pair.start( true );
pair.waitForSteadyState( [ 1, 0 ], firstSlave.host, true );
}, function() { return firstSlave; }, function() { return firstMaster; } );
}
debug( "sigterm restart test" );
doRestartTest( 15 ) // SIGTERM
debug( "sigkill restart test" );
doRestartTest( 9 ) // SIGKILL
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