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/*
test durability
*/
var debugging = false;
var testname = "manyRestarts";
var step = 1;
var conn = null;
function checkNoJournalFiles(path, pass) {
var files = listFiles(path);
if (files.some(function (f) { return f.name.indexOf("prealloc") < 0; })) {
if (pass == null) {
// wait a bit longer for mongod to potentially finish if it is still running.
sleep(10000);
return checkNoJournalFiles(path, 1);
}
print("\n\n\n");
print("FAIL path:" + path);
print("unexpected files:");
printjson(files);
assert(false, "FAIL a journal/lsn file is present which is unexpected");
}
}
function runDiff(a, b) {
function reSlash(s) {
var x = s;
if (_isWindows()) {
while (1) {
var y = x.replace('/', '\\');
if (y == x)
break;
x = y;
}
}
return x;
}
a = reSlash(a);
b = reSlash(b);
print("diff " + a + " " + b);
return run("diff", a, b);
}
function log(str) {
print();
if(str)
print(testname+" step " + step++ + " " + str);
else
print(testname+" step " + step++);
}
// if you do inserts here, you will want to set _id. otherwise they won't match on different
// runs so we can't do a binary diff of the resulting files to check they are consistent.
function work() {
log("work");
var d = conn.getDB("test");
d.foo.insert({ _id: 3, x: 22 });
d.foo.insert({ _id: 4, x: 22 });
d.a.insert({ _id: 3, x: 22, y: [1, 2, 3] });
d.a.insert({ _id: 4, x: 22, y: [1, 2, 3] });
d.a.update({ _id: 4 }, { $inc: { x: 1} });
// try building an index. however, be careful as object id's in system.indexes would vary, so we do it manually:
d.system.indexes.insert({ _id: 99, ns: "test.a", key: { x: 1 }, name: "x_1" });
log("endwork");
return d;
}
function addRows() {
var rand = Random.randInt(10000);
log("add rows " + rand);
var d = conn.getDB("test");
for (var j = 0; j < rand; ++j) {
d.rows.insert({a:1, b: "blah"});
}
return rand;
}
function verify() {
log("verify");
var d = conn.getDB("test");
assert.eq(d.foo.count(), 2, "collection count is wrong");
assert.eq(d.a.count(), 2, "collection count is wrong");
}
function verifyRows(nrows) {
log("verify rows " + nrows);
var d = conn.getDB("test");
assert.eq(d.rows.count(), nrows, "collection count is wrong");
}
if( debugging ) {
// mongod already running in debugger
conn = db.getMongo();
work();
sleep(30000);
quit();
}
log();
// directories
var path1 = MongoRunner.dataPath + testname+"nodur";
var path2 = MongoRunner.dataPath + testname+"dur";
// non-durable version
log("starting first mongod");
conn = MongoRunner.runMongod({dbpath: path1, nojournal: "", smallfiles: ""});
work();
MongoRunner.stopMongod(conn);
// hail mary for windows
// Sat Jun 11 14:07:57 Error: boost::filesystem::create_directory: Access is denied: "\data\db\manyRestartsdur" (anon):1
sleep(1000);
log("starting second mongod");
conn = MongoRunner.runMongod({dbpath: path2, journal: "", smallfiles: "", journalOptions: 8});
work();
// wait for group commit.
printjson(conn.getDB('admin').runCommand({getlasterror:1, fsync:1}));
MongoRunner.stopMongod(conn);
sleep(5000);
for (var i = 0; i < 3; ++i) {
// durable version
log("restarting second mongod");
conn = MongoRunner.runMongod({restart: true,
cleanData: false,
dbpath: path2,
journal: "",
smallfiles: "",
journalOptions: 8});
// wait for group commit.
printjson(conn.getDB('admin').runCommand({getlasterror:1, fsync:1}));
verify();
// kill the process hard
log("hard kill");
MongoRunner.stopMongod(conn, /*signal*/9);
sleep(5000);
}
// journal file should be present, and non-empty as we killed hard
// restart and recover
log("restart");
conn = MongoRunner.runMongod({restart: true,
cleanData: false,
dbpath: path2,
journal: "",
smallfiles: "",
journalOptions: 8});
log("verify");
verify();
log("stop");
MongoRunner.stopMongod(conn);
sleep(5000);
// at this point, after clean shutdown, there should be no journal files
log("check no journal files");
checkNoJournalFiles(path2 + "/journal");
log("check data matches ns");
var diff = runDiff(path1 + "/test.ns", path2 + "/test.ns");
assert(diff == "", "error test.ns files differ");
log("check data matches .0");
var diff = runDiff(path1 + "/test.0", path2 + "/test.0");
assert(diff == "", "error test.0 files differ");
log("check data matches done");
Random.setRandomSeed();
var nrows = 0;
for (var i = 0; i < 5; ++i) {
// durable version
log("restarting second mongod");
conn = MongoRunner.runMongod({restart: true,
cleanData: false,
dbpath: path2,
journal: "",
smallfiles: "",
journalOptions: 8});
nrows += addRows();
// wait for group commit.
printjson(conn.getDB('admin').runCommand({getlasterror:1, fsync:1}));
verifyRows(nrows);
// kill the process hard
log("hard kill");
MongoRunner.stopMongod(conn, /*signal*/9);
sleep(5000);
}
print(testname + " SUCCESS");
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