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/* durability test dropping a database
*/
var debugging = false;
var testname = "dropdb";
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) {
if (str)
print("\n" + testname + " step " + step++ + " " + str);
else
print("\n" + 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 (add data, drop database)");
var e = conn.getDB("teste");
e.foo.insert({ _id: 99 });
var d = conn.getDB("test");
d.foo.insert({ _id: 3, x: 22 });
d.bar.insert({ _id: 3, x: 22 });
d.dropDatabase();
// assure writes applied in case we kill -9 on return from this function
assert.writeOK(d.foo.insert({ _id: 100 }, { writeConcern: { fsync: 1 }}));
}
function verify() {
log("verify");
var d = conn.getDB("test");
var count = d.foo.count();
if (count != 1) {
print("going to fail, test.foo.count() != 1 in verify()");
sleep(10000); // easier to read the output this way
print("\n\n\ndropdb.js FAIL test.foo.count() should be 1 but is : " + count);
print(d.foo.count() + "\n\n\n");
assert(false);
}
assert(d.foo.findOne()._id == 100, "100");
print("dropdb.js teste.foo.findOne:");
printjson(conn.getDB("teste").foo.findOne());
var teste = conn.getDB("teste");
var testecount = teste.foo.count();
if (testecount != 1) {
print("going to fail, teste.foo.count() != 1 in verify()");
sleep(10000); // easier to read the output this way
print("\n\n\ndropdb.js FAIL teste.foo.count() should be 1 but is : " + testecount);
print("\n\n\n");
assert(false);
}
print("teste.foo.count() = " + teste.foo.count());
assert(teste.foo.findOne()._id == 99, "teste");
}
if (debugging) {
// mongod already running in debugger
conn = db.getMongo();
work();
verify();
sleep(30000);
quit();
}
// directories
var path1 = MongoRunner.dataPath + testname + "nodur";
var path2 = MongoRunner.dataPath + testname + "dur";
// non-durable version
log("mongod nodur");
conn = startMongodEmpty("--port", 30000, "--dbpath", path1, "--nodur", "--smallfiles");
work();
verify();
stopMongod(30000);
// durable version
log("mongod dur");
conn = startMongodEmpty("--port", 30001, "--dbpath", path2, "--dur", "--smallfiles", "--durOptions", 8);
work();
verify();
// kill the process hard
log("kill 9");
stopMongod(30001, /*signal*/9);
// journal file should be present, and non-empty as we killed hard
// we will force removal of a datafile to be sure we can recreate everything.
removeFile(path2 + "/test.0");
// the trick above is only valid if journals haven't rotated out, and also if lsn isn't skipping
removeFile(path2 + "/lsn");
log("restart and recover");
conn = startMongodNoReset("--port", 30002, "--dbpath", path2, "--dur", "--smallfiles", "--durOptions", 9);
log("verify after recovery");
verify();
log("stop mongod 30002");
stopMongod(30002);
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");
if (diff != "") {
print("\n\n\nDIFFERS\n");
print(diff);
}
assert(diff == "", "error test.ns files differ");
log("check data matches .0");
diff = runDiff(path1 + "/test.0", path2 + "/test.0");
if (diff != "") {
print("\n\n\nDIFFERS\n");
print(diff);
}
assert(diff == "", "error test.0 files differ");
log("check data matches done");
print(testname + " SUCCESS");
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