SERVER-15233 allow plan cache commands to run on secondaries is slaveOk explicitly set to true

(cherry picked from commit 77b00970997d13d0758c745e5a94fc79982d4401)

Conflicts:
	src/mongo/s/commands/cluster_plan_cache_cmd.cpp

1 files changed, 68 insertions, 0 deletions

diff --git a/jstests/replsets/plan_cache_slaveok.js b/jstests/replsets/plan_cache_slaveok.js
new file mode 100644
index 00000000000..65d2d36cd18
--- /dev/null
+++ b/jstests/replsets/plan_cache_slaveok.js
@@ -0,0 +1,68 @@
+// Verify that the plan cache commands can be run on secondaries, but only
+// if slave ok is explicitly set.
+
+var name = "plan_cache_slaveok";
+
+function assertPlanCacheCommandsSucceed(db) {
+    // .listQueryShapes()
+    assert.commandWorked(db.runCommand({
+        planCacheListQueryShapes: name
+    }));
+
+    // .getPlansByQuery()
+    assert.commandWorked(db.runCommand({
+        planCacheListPlans: name,
+        query: {a: 1}
+    }));
+
+    // .clear()
+    assert.commandWorked(db.runCommand({
+        planCacheClear: name,
+        query: {a: 1}
+    }));
+}
+
+function assertPlanCacheCommandsFail(db) {
+    // .listQueryShapes()
+    assert.commandFailed(db.runCommand({
+        planCacheListQueryShapes: name
+    }));
+
+    // .getPlansByQuery()
+    assert.commandFailed(db.runCommand({
+        planCacheListPlans: name,
+        query: {a: 1}
+    }));
+
+    // .clear()
+    assert.commandFailed(db.runCommand({
+        planCacheClear: name,
+        query: {a: 1}
+    }));
+}
+
+print("Start replica set with two nodes");
+var replTest = new ReplSetTest({name: name, nodes: 2});
+var nodes = replTest.startSet();
+replTest.initiate();
+var primary = replTest.getMaster();
+
+// Insert a document and let it sync to the secondary.
+print("Initial sync");
+primary.getDB("test")[name].insert({a: 1});
+replTest.awaitReplication();
+
+// Check that the document is present on the primary.
+assert.eq(1, primary.getDB("test")[name].findOne({a: 1})["a"]);
+
+// Make sure the plan cache commands succeed on the primary.
+assertPlanCacheCommandsSucceed(primary.getDB("test"));
+
+// With slave ok false, the commands should fail on the secondary.
+var secondary = replTest.getSecondary();
+secondary.getDB("test").getMongo().setSlaveOk(false);
+assertPlanCacheCommandsFail(secondary.getDB("test"));
+
+// With slave ok true, the commands should succeed on the secondary.
+secondary.getDB("test").getMongo().setSlaveOk(true);
+assertPlanCacheCommandsSucceed(secondary.getDB("test"));