prepare for "check connectivity" api

* Cmd now has more generic "name" property and optional "portNumber"
* add CmdType CHECK_CONNECTIVITY
* add a simple one-shot PeerCheck utility
* add CheckCompletionHandler that handles a Cmd with type CHECK_CONNECTIVITY
* dummy in handleCmd for now

1 files changed, 37 insertions, 0 deletions

diff --git a/configd/src/apps/sentinel/peer-check.h b/configd/src/apps/sentinel/peer-check.h
new file mode 100644
index 00000000000..658375a8d7b
--- /dev/null
+++ b/configd/src/apps/sentinel/peer-check.h
@@ -0,0 +1,37 @@
+// Copyright Verizon Media. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+
+#pragma once
+
+#include "status-callback.h"
+#include <string>
+#include <vespa/fnet/task.h>
+#include <vespa/fnet/frt/invoker.h>
+#include <vespa/fnet/frt/rpcrequest.h>
+#include <vespa/fnet/frt/supervisor.h>
+#include <vespa/fnet/frt/target.h>
+
+namespace config::sentinel {
+
+class PeerCheck : public FRT_IRequestWait
+{
+public:
+    PeerCheck(StatusCallback &callback, const std::string &host, int portnum, FRT_Supervisor &orb);
+    ~PeerCheck();
+
+    PeerCheck(const PeerCheck &) = delete;
+    PeerCheck(PeerCheck &&) = delete;
+    PeerCheck& operator= (const PeerCheck &) = delete;
+    PeerCheck& operator= (PeerCheck &&) = delete;
+
+    /** from FRT_IRequestWait **/
+    void RequestDone(FRT_RPCRequest *req) override;
+
+private:
+    StatusCallback &_callback;
+    std::string     _hostname;
+    int             _portnum;
+    FRT_Target     *_target;
+    FRT_RPCRequest *_req;
+};
+
+}