SERVER-35537 Create mongoebench for running benchRun against mobile.

It take a JSON config file with a "pre" section for any setup logic and
an "ops" section for the operations that the benchRun workers should
execute repeatedly.

1 files changed, 49 insertions, 0 deletions

diff --git a/jstests/libs/mongoebench.js b/jstests/libs/mongoebench.js
new file mode 100644
index 00000000000..f6feb4eb9f0
--- /dev/null
+++ b/jstests/libs/mongoebench.js
@@ -0,0 +1,49 @@
+"use strict";
+
+var {runMongoeBench} = (function() {
+
+    /**
+     * Spawns a mongoebench process with the specified options.
+     *
+     * If a plain JavaScript object is specified as the 'config' parameter, then it is serialized to
+     * a file as a JSON string which is then specified as the config file for the mongoebench
+     * process.
+     */
+    function runMongoeBench(config, options = {}) {
+        const args = ["mongoebench"];
+
+        if (typeof config === "object") {
+            const filename = MongoRunner.dataPath + "mongoebench_config.json";
+            writeFile(filename, tojson(config));
+            args.push(filename);
+        } else if (typeof config === "string") {
+            args.push(config);
+        } else {
+            throw new Error("'config' parameter must be a string or an object");
+        }
+
+        if (!options.hasOwnProperty("dbpath")) {
+            options.dbpath = MongoRunner.dataDir;
+        }
+
+        for (let key of Object.keys(options)) {
+            const value = options[key];
+            if (value === null || value === undefined) {
+                throw new Error(
+                    "Value '" + value + "' for '" + key +
+                    "' option is ambiguous; specify {flag: ''} to add --flag command line" +
+                    " options'");
+            }
+
+            args.push("--" + key);
+            if (value !== "") {
+                args.push(value.toString());
+            }
+        }
+
+        const exitCode = _runMongoProgram(...args);
+        assert.eq(0, exitCode, "encountered an error in mongoebench");
+    }
+
+    return {runMongoeBench};
+})();