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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.orchestrator.controller;
import com.yahoo.vespa.applicationmodel.ApplicationInstanceId;
import com.yahoo.vespa.applicationmodel.HostName;
import com.yahoo.vespa.orchestrator.ApplicationStateChangeDeniedException;
import com.yahoo.vespa.orchestrator.OrchestratorContext;
import com.yahoo.vespa.orchestrator.model.ContentService;
import com.yahoo.vespa.orchestrator.policy.HostStateChangeDeniedException;
/**
* @author bakksjo
*/
public interface ClusterControllerClient {
/**
* Requests that a cluster controller sets the requested node to the requested state.
*
* @return false is this was a probe operation, and permission would be denied.
* @throws HostStateChangeDeniedException if operation fails, or is otherwise disallowed.
*/
boolean trySetNodeState(OrchestratorContext context, HostName host, int storageNodeIndex,
ClusterControllerNodeState wantedState, ContentService contentService, boolean force)
throws HostStateChangeDeniedException;
/**
* Requests that a cluster controller sets the requested node to the requested state.
*
* @throws HostStateChangeDeniedException if operation fails, or is disallowed.
*/
void setNodeState(OrchestratorContext context, HostName host, int storageNodeIndex,
ClusterControllerNodeState wantedState, ContentService contentService, boolean force)
throws HostStateChangeDeniedException;
/**
* Requests that a cluster controller sets all nodes in the cluster to the requested state.
*
* @throws ApplicationStateChangeDeniedException if operation fails, or is disallowed.
*/
void setApplicationState(OrchestratorContext context, ApplicationInstanceId applicationId,
ClusterControllerNodeState wantedState) throws ApplicationStateChangeDeniedException;
}
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