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// Basic pairing test
var baseName = "jstests_pair1test";
debug = function( p ) {
// print( p );
}
ismaster = function( n ) {
var im = n.getDB( "admin" ).runCommand( { "ismaster" : 1 } );
// print( "ismaster: " + tojson( im ) );
assert( im, "command ismaster failed" );
return im.ismaster;
}
var writeOneIdx = 0;
writeOne = function( n ) {
n.getDB( baseName ).z.save( { _id: new ObjectId(), i: ++writeOneIdx } );
}
getCount = function( n ) {
return n.getDB( baseName ).z.find( { i: writeOneIdx } ).toArray().length;
}
checkWrite = function( m, s ) {
writeOne( m );
assert.eq( 1, getCount( m ) );
check( s );
}
check = function( s ) {
s.setSlaveOk();
assert.soon( function() {
return 1 == getCount( s );
} );
sleep( 500 ); // wait for sync clone to finish up
}
// check that slave reads and writes are guarded
checkSlaveGuard = function( s ) {
var t = s.getDB( baseName + "-temp" ).temp;
assert.throws( t.find().count, [], "not master" );
assert.throws( t.find(), [], "not master", "find did not assert" );
checkError = function() {
assert.eq( "not master", s.getDB( "admin" ).getLastError() );
s.getDB( "admin" ).resetError();
}
s.getDB( "admin" ).resetError();
t.save( {x:1} );
checkError();
t.update( {}, {x:2}, true );
checkError();
t.remove( {x:0} );
checkError();
}
doTest = function( signal ) {
ports = allocatePorts( 3 );
a = new MongodRunner( ports[ 0 ], "/data/db/" + baseName + "-arbiter" );
l = new MongodRunner( ports[ 1 ], "/data/db/" + baseName + "-left", "127.0.0.1:" + ports[ 2 ], "127.0.0.1:" + ports[ 0 ] );
r = new MongodRunner( ports[ 2 ], "/data/db/" + baseName + "-right", "127.0.0.1:" + ports[ 1 ], "127.0.0.1:" + ports[ 0 ] );
rp = new ReplPair( l, r, a );
rp.start();
rp.waitForSteadyState();
checkSlaveGuard( rp.slave() );
checkWrite( rp.master(), rp.slave() );
debug( "kill first" );
rp.killNode( rp.master(), signal );
rp.waitForSteadyState( [ 1, null ], rp.slave().host );
writeOne( rp.master() );
debug( "restart first" );
rp.start( true );
rp.waitForSteadyState();
check( rp.slave() );
checkWrite( rp.master(), rp.slave() );
debug( "kill second" );
rp.killNode( rp.master(), signal );
rp.waitForSteadyState( [ 1, null ], rp.slave().host );
debug( "restart second" );
rp.start( true );
rp.waitForSteadyState( [ 1, 0 ], rp.master().host );
checkWrite( rp.master(), rp.slave() );
ports.forEach( function( x ) { stopMongod( x ); } );
}
doTest( 15 ); // SIGTERM
doTest( 9 ); // SIGKILL
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