/**
 * Tests that the time-tracking metrics in the 'transaction' object in currentOp() are being tracked
 * correctly.
 * @tags: [uses_transactions, uses_prepare_transaction]
 */

(function() {
'use strict';
load("jstests/core/txns/libs/prepare_helpers.js");

const rst = new ReplSetTest({nodes: 1});
rst.startSet();
rst.initiate();

const collName = 'currentop_transaction_metrics';
const testDB = rst.getPrimary().getDB('test');
const adminDB = rst.getPrimary().getDB('admin');
testDB.runCommand({drop: collName, writeConcern: {w: "majority"}});
assert.commandWorked(testDB[collName].insert({x: 1}, {writeConcern: {w: "majority"}}));

const session = adminDB.getMongo().startSession({causalConsistency: false});
const sessionDB = session.getDatabase('test');

session.startTransaction();
// Run a few operations so that the transaction goes through several active/inactive periods.
assert.commandWorked(sessionDB[collName].update({}, {a: 1}));
assert.commandWorked(sessionDB[collName].insert({_id: "insert-1"}));
assert.commandWorked(sessionDB[collName].insert({_id: "insert-2"}));
assert.commandWorked(sessionDB[collName].insert({_id: "insert-3"}));

const transactionFilter = {
    active: false,
    'lsid': {$exists: true},
    'transaction.parameters.txnNumber': {$eq: 0},
    'transaction.parameters.autocommit': {$eq: false},
    'transaction.timePreparedMicros': {$exists: false}
};

let currentOp = adminDB.aggregate([{$currentOp: {}}, {$match: transactionFilter}]).toArray();
assert.eq(currentOp.length, 1);

// Check that the currentOp's transaction subdocument's fields align with our expectations.
let transactionDocument = currentOp[0].transaction;
assert.gte(transactionDocument.timeOpenMicros,
           transactionDocument.timeActiveMicros + transactionDocument.timeInactiveMicros);

// Check that preparing the transaction enables the 'timePreparedMicros' field in currentOp.
const prepareTimestamp = PrepareHelpers.prepareTransaction(session);

const prepareTransactionFilter = {
    active: false,
    'lsid': {$exists: true},
    'transaction.parameters.txnNumber': {$eq: 0},
    'transaction.parameters.autocommit': {$eq: false},
    'transaction.timePreparedMicros': {$exists: true}
};

currentOp = adminDB.aggregate([{$currentOp: {}}, {$match: prepareTransactionFilter}]).toArray();
assert.eq(currentOp.length, 1);

// Check that the currentOp's transaction subdocument's fields align with our expectations.
const prepareTransactionDocument = currentOp[0].transaction;
assert.gte(
    prepareTransactionDocument.timeOpenMicros,
    prepareTransactionDocument.timeActiveMicros + prepareTransactionDocument.timeInactiveMicros);
assert.gte(prepareTransactionDocument.timePreparedMicros, 0);

PrepareHelpers.commitTransaction(session, prepareTimestamp);
session.endSession();

rst.stopSet();
})();