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var wait, occasionally, reconnect, getLatestOp, waitForAllMembers, reconfig, awaitOpTime;
(function () {
"use strict";
var count = 0;
var w = 0;
wait = function(f,msg) {
w++;
var n = 0;
while (!f()) {
if( n % 4 == 0 )
print("waiting " + w);
if (++n == 4) {
print("" + f);
}
assert(n < 200, 'tried 200 times, giving up on ' + msg );
sleep(1000);
}
};
/**
* Use this to do something once every 4 iterations.
*
* <pre>
* for (i=0; i<1000; i++) {
* occasionally(function() { print("4 more iterations"); });
* }
* </pre>
*/
occasionally = function(f, n) {
var interval = n || 4;
if (count % interval == 0) {
f();
}
count++;
};
reconnect = function(a) {
wait(function() {
var db;
try {
// make this work with either dbs or connections
if (typeof(a.getDB) == "function") {
db = a.getDB('foo');
}
else {
db = a;
}
db.bar.stats();
if (jsTest.options().keyFile) { // SERVER-4241: Shell connections don't re-authenticate on reconnect
return jsTest.authenticate(db.getMongo());
}
return true;
} catch(e) {
print(e);
return false;
}
});
};
getLatestOp = function(server) {
server.getDB("admin").getMongo().setSlaveOk();
var log = server.getDB("local")['oplog.rs'];
var cursor = log.find({}).sort({'$natural': -1}).limit(1);
if (cursor.hasNext()) {
return cursor.next();
}
return null;
};
waitForAllMembers = function(master, timeout) {
var failCount = 0;
assert.soon( function() {
var state = null
try {
state = master.getSisterDB("admin").runCommand({replSetGetStatus:1});
failCount = 0;
} catch ( e ) {
// Connection can get reset on replica set failover causing a socket exception
print( "Calling replSetGetStatus failed" );
print( e );
return false;
}
occasionally(function() { printjson(state); }, 10);
for (var m in state.members) {
if (state.members[m].state != 1 && // PRIMARY
state.members[m].state != 2 && // SECONDARY
state.members[m].state != 7) { // ARBITER
return false;
}
}
printjson( state );
return true;
}, "not all members ready", timeout || 60000);
print( "All members are now in state PRIMARY, SECONDARY, or ARBITER" );
};
reconfig = function(rs, config, force) {
"use strict";
var admin = rs.getPrimary().getDB("admin");
var e;
var master;
try {
assert.commandWorked(admin.runCommand({replSetReconfig: config, force: force}));
}
catch (e) {
if (tojson(e).indexOf( "error doing query: failed" ) < 0) {
throw e;
}
}
var master = rs.getPrimary().getDB("admin");
waitForAllMembers(master);
return master;
};
awaitOpTime = function (node, opTime) {
var ts, ex;
assert.soon(function () {
try {
// The following statement extracts the timestamp field from the most recent element of
// the oplog, and stores it in "ts".
ts = node.getDB("local")['oplog.rs'].find({}).sort({'$natural': -1}).limit(1).next().ts;
if ((ts.t == opTime.t) && (ts.i == opTime.i)) {
return true;
}
ex = null;
return false;
}
catch (ex) {
return false;
}
}, function () {
var message = "Node " + node + " only reached optime " + tojson(ts) + " not " +
tojson(opTime);
if (ex) {
message += "; last attempt failed with exception " + tojson(ex);
}
return message;
});
};
}());
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