mirror of https://github.com/mongodb/mongo
55 lines
2.0 KiB
JavaScript
55 lines
2.0 KiB
JavaScript
function logClusterPorts(st) {
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st.printNodes();
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}
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function isTimeToWake(waitFor) {
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if (waitFor.hasOwnProperty("anyDataIn")) {
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if (waitFor.anyDataIn.findOne() != null) {
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return true;
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} else {
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jsTestLog(`Put data in ${waitFor.anyDataIn.getFullName()} collection to break this infinite loop.`);
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return false;
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}
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} else {
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jsTestLog("Was not given a termination condition. Will keep looping forever.");
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}
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return false;
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}
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/**
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* Infinite loops and periodically logs information about the cluster. The intended use is to block
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* your test at some interesting point so that you can attach via gdb to one of the nodes. The
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* infinite loop can be broken/unblocked if you insert data into a collection which you've named in
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* 'opts', like so:
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*
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* hangTestToAttachGDB(st, {waitFor: {anyDataIn: testDB["SENTINEL"]}});
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*
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* Once you have your test hanging, you can use the 'ps' tool to find the process id (pid) of the
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* target node, and then do something like:
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* /opt/mongodbtoolchain/v4/bin/gdb bazel-bin/install/bin/mongod
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* ...
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* (gdb prompt) attach <pid>
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*
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* @param {ShardingTest} st - For printing out cluster info - making it easier to identify which
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* node to connect gdb to.
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* @param {Object} opts - How to break out of the loop. Only supported option right now is
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* 'waitFor.anyDataIn' which should be a collection object (not a string).
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*/
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export function hangTestToAttachGDB(st, opts) {
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const portLogIntervalMS = 10000;
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const intervalMS = 1000;
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let iters = 0;
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while (true) {
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sleep(intervalMS);
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++iters;
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if (intervalMS * iters >= portLogIntervalMS) {
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jsTestLog("Here are the ports to connect to");
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logClusterPorts(st);
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}
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jsTestLog("Test is sleeping waiting for you to connect");
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if (opts.waitFor && isTimeToWake(opts.waitFor)) {
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jsTestLog("Breaking sleep loop");
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break;
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}
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}
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}
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