Add new API call to remove a replication task / target

REST Request:
-------------------------------
PUT /sysadm/lifepreserver
{
   "dataset" : "tank",
   "host" : "192.168.0.10",
   "action" : "removereplication"
}

REST Response:
-------------------------------
{
    "args": {
        "removereplication": {
            "dataset": "tank",
            "host": "192.168.0.10"
        }
    }
}

WebSocket Request:
-------------------------------
{
   "id" : "fooid",
   "args" : {
      "action" : "removereplication",
      "dataset" : "tank",
      "host" : "192.168.0.10"
   },
   "name" : "lifepreserver",
   "namespace" : "sysadm"
}

WebSocket Response:
-------------------------------
{
  "args": {
    "removereplication": {
      "dataset": "tank",
      "host": "192.168.0.10"
    }
  },
  "id": "fooid",
  "name": "response",
  "namespace": "sysadm"
}

src/library/sysadm-lifepreserver.cpp

@@ -287,6 +287,47 @@ QJsonObject LifePreserver::listSnap(QJsonObject jsin) {
   return retObject;
 }
 
+// Remove a replication task
+QJsonObject LifePreserver::removeReplication(QJsonObject jsin) {
+   QJsonObject retObject;
+   QString dataset, host;
+
+   QStringList keys = jsin.keys();
+   if(! keys.contains("dataset") || ! keys.contains("host")){
+     retObject.insert("error", "Requires dataset and host keys");
+     return retObject;
+   }
+
+   // Get the dataset / host
+   dataset = jsin.value("dataset").toString();
+   host = jsin.value("host").toString();
+
+   // Make sure we have the dataset / host key(s)
+   if ( dataset.isEmpty() || host.isEmpty() ) {
+     retObject.insert("error", "Empty dataset or host keys ");
+     return retObject;
+   }
+
+   QStringList output;
+   output = General::RunCommand("lpreserver replicate remove " + dataset + " " + host).split("\n");
+
+   // Check for any errors
+   for ( int i = 0; i < output.size(); i++)
+   {
+      if ( output.at(i).indexOf("ERROR:") != -1 ) {
+       retObject.insert("error", output.at(i));
+       return retObject;
+      }
+   }
+
+   // Got to the end, return the good json
+   QJsonObject values;
+   values.insert("dataset", dataset);
+   values.insert("host", host);
+
+   return values;
+}
+
 // Remove a snapshot
 QJsonObject LifePreserver::removeSnapshot(QJsonObject jsin) {
    QJsonObject retObject;

src/library/sysadm-lifepreserver.h

@@ -19,6 +19,7 @@ public:
 	static QJsonObject listCron(); 
 	static QJsonObject listReplication();
 	static QJsonObject listSnap(QJsonObject jsin);
+	static QJsonObject removeReplication(QJsonObject jsin);
 	static QJsonObject removeSnapshot(QJsonObject jsin);
 	static QJsonObject revertSnapshot(QJsonObject jsin);
 	static QJsonObject saveSettings(QJsonObject jsin);

src/server/WebBackend.cpp

@@ -205,6 +205,10 @@ RestOutputStruct::ExitCode WebSocket::EvaluateSysadmLifePreserverRequest(const Q
 	ok = true;
         out->insert("listsnap", sysadm::LifePreserver::listSnap(in_args.toObject()));
       }
+      if(act=="removereplication"){
+	ok = true;
+        out->insert("removereplication", sysadm::LifePreserver::removeReplication(in_args.toObject()));
+      }
       if(act=="removesnap"){
 	ok = true;
         out->insert("removesnap", sysadm::LifePreserver::removeSnapshot(in_args.toObject()));