Fix: allow executing CopyCommand operations in parallel when it is set (#5960)

* Invoke the hypervisor guru instead of the guru cycle

* Refactor

* Remove unused import

* Refactor error

Author: nvazquez

engine/components-api/src/main/java/com/cloud/hypervisor/HypervisorGuruManager.java

@@ -24,4 +24,6 @@ public interface HypervisorGuruManager extends Manager {
     HypervisorGuru getGuru(HypervisorType hypervisorType);
 
     long getGuruProcessedCommandTargetHost(long hostId, Command cmd);
+
+    long getGuruProcessedCommandTargetHost(long hostId, Command cmd, HypervisorType hypervisorType);
 }

engine/orchestration/src/main/java/com/cloud/agent/manager/AgentManagerImpl.java

@@ -342,10 +342,15 @@ public Answer sendTo(final Long dcId, final HypervisorType type, final Command c
                 }
                 Answer answer = null;
                 try {
-
-                    final long targetHostId = _hvGuruMgr.getGuruProcessedCommandTargetHost(host.getId(), cmd);
+                    final long targetHostId = _hvGuruMgr.getGuruProcessedCommandTargetHost(host.getId(), cmd, host.getHypervisorType());
                     answer = easySend(targetHostId, cmd);
                 } catch (final Exception e) {
+                    String errorMsg = String.format("Error sending command %s to host %s, due to %s", cmd.getClass().getName(),
+                            host.getUuid(), e.getLocalizedMessage());
+                    s_logger.error(errorMsg);
+                    if (s_logger.isDebugEnabled()) {
+                        s_logger.debug(errorMsg, e);
+                    }
                 }
                 if (answer != null) {
                     return answer;

server/src/main/java/com/cloud/hypervisor/HypervisorGuruManagerImpl.java

@@ -81,6 +81,13 @@ public long getGuruProcessedCommandTargetHost(long hostId, Command cmd) {
         return hostId;
     }
 
+    @Override
+    public long getGuruProcessedCommandTargetHost(long hostId, Command cmd, HypervisorType hypervisorType) {
+        HypervisorGuru guru = getGuru(hypervisorType);
+        Pair<Boolean, Long> result = guru.getCommandHostDelegation(hostId, cmd);
+        return result.first() ? result.second() : hostId;
+    }
+
     public List<HypervisorGuru> getHvGuruList() {
         return _hvGuruList;
     }