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package org.apache.cloudstack.api.command.user.region.ha.gslb;
import com.cloud.event.EventTypes;
import com.cloud.exception.InvalidParameterValueException;
import com.cloud.network.rules.LoadBalancer;
import com.cloud.region.ha.GlobalLoadBalancerRule;
import com.cloud.region.ha.GlobalLoadBalancingRulesService;
import com.cloud.user.Account;
import com.cloud.utils.StringUtils;
import com.cloud.utils.db.EntityManager;
import org.apache.cloudstack.api.*;
import org.apache.cloudstack.api.response.FirewallRuleResponse;
import org.apache.cloudstack.api.response.GlobalLoadBalancerResponse;
import org.apache.cloudstack.api.response.SuccessResponse;
import org.apache.cloudstack.context.CallContext;
import org.apache.log4j.Logger;
import javax.inject.Inject;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.UUID;
@APICommand(name = "assignToGlobalLoadBalancerRule", description="Assign load balancer rule or list of load " +
"balancer rules to a global load balancer rules.", responseObject=SuccessResponse.class)
public class AssignToGlobalLoadBalancerRuleCmd extends BaseAsyncCmd {
public static final Logger s_logger = Logger.getLogger(AssignToGlobalLoadBalancerRuleCmd.class.getName());
private static final String s_name = "assigntogloballoadbalancerruleresponse";
@Inject public EntityManager _entityMgr;
/////////////////////////////////////////////////////
//////////////// API parameters /////////////////////
/////////////////////////////////////////////////////
@Parameter(name=ApiConstants.ID, type=CommandType.UUID, entityType = GlobalLoadBalancerResponse.class,
required=true, description="the ID of the global load balancer rule")
private Long id;
@Parameter(name=ApiConstants.LOAD_BALANCER_RULE_LIST, type=CommandType.LIST, collectionType=CommandType.UUID,
entityType = FirewallRuleResponse.class, required=true, description="the list load balancer rules that " +
"will be assigned to gloabal load balacner rule")
private List<Long> loadBalancerRulesIds;
@Parameter(name=ApiConstants.GSLB_LBRULE_WEIGHT_MAP, type= CommandType.MAP,
description = "Map of LB rule id's and corresponding weights (between 1-100) in the GSLB rule, if not specified weight of " +
"a LB rule is defaulted to 1. Specified as 'gslblbruleweightsmap[0].loadbalancerid=UUID" +
"&gslblbruleweightsmap[0].weight=10'", required=false)
private Map gslbLbRuleWieghtMap;
/////////////////////////////////////////////////////
/////////////////// Accessors ///////////////////////
/////////////////////////////////////////////////////
public Long getGlobalLoadBalancerRuleId() {
return id;
}
public List<Long> getLoadBalancerRulesIds() {
return loadBalancerRulesIds;
}
public Map<Long, Long> getLoadBalancerRuleWeightMap() {
Map <Long, Long> lbRuleWeightMap = new HashMap<Long, Long>();
if (gslbLbRuleWieghtMap == null || gslbLbRuleWieghtMap.isEmpty()) {
return null;
}
Collection lbruleWeightsCollection = gslbLbRuleWieghtMap.values();
Iterator iter = lbruleWeightsCollection.iterator();
while (iter.hasNext()) {
HashMap<String, String> map = (HashMap<String, String>) iter.next();
Long weight;
LoadBalancer lbrule = _entityMgr.findByUuid(LoadBalancer.class, map.get("loadbalancerid"));
if (lbrule == null) {
throw new InvalidParameterValueException("Unable to find load balancer rule with ID: " + map.get("loadbalancerid"));
}
try {
weight = Long.parseLong(map.get("weight"));
if (weight < 1 || weight > 100) {
throw new InvalidParameterValueException("Invalid weight " + weight + " given for the LB rule id: " + map.get("loadbalancerid"));
}
} catch (NumberFormatException nfe) {
throw new InvalidParameterValueException("Unable to translate weight given for the LB rule id: " + map.get("loadbalancerid"));
}
lbRuleWeightMap.put(lbrule.getId(), weight);
}
return lbRuleWeightMap;
}
/////////////////////////////////////////////////////
/////////////// API Implementation///////////////////
/////////////////////////////////////////////////////
@Inject
public GlobalLoadBalancingRulesService _gslbService;
@Override
public String getCommandName() {
return s_name;
}
@Override
public long getEntityOwnerId() {
GlobalLoadBalancerRule globalLoadBalancerRule = _entityMgr.findById(GlobalLoadBalancerRule.class,
getGlobalLoadBalancerRuleId());
if (globalLoadBalancerRule == null) {
return Account.ACCOUNT_ID_SYSTEM; // bad id given, parent this command to SYSTEM so ERROR events are tracked
}
return globalLoadBalancerRule.getAccountId();
}
@Override
public String getEventType() {
return EventTypes.EVENT_ASSIGN_TO_GLOBAL_LOAD_BALANCER_RULE;
}
@Override
public String getEventDescription() {
return "assign load balancer rules " + StringUtils.join(getLoadBalancerRulesIds(), ",") +
" to global load balancer rule " + getGlobalLoadBalancerRuleId();
}
@Override
public void execute(){
CallContext.current().setEventDetails("Global Load balancer rule Id: "+ getGlobalLoadBalancerRuleId()+ " VmIds: "
+ StringUtils.join(getLoadBalancerRulesIds(), ","));
boolean result = _gslbService.assignToGlobalLoadBalancerRule(this);
if (result) {
SuccessResponse response = new SuccessResponse(getCommandName());
this.setResponseObject(response);
} else {
throw new ServerApiException(ApiErrorCode.INTERNAL_ERROR, "Failed to assign global load balancer rule");
}
}
@Override
public String getSyncObjType() {
return BaseAsyncCmd.gslbSyncObject;
}
@Override
public Long getSyncObjId() {
GlobalLoadBalancerRule gslb = _gslbService.findById(id);
if(gslb == null){
throw new InvalidParameterValueException("Unable to find load balancer rule: " + id);
}
return gslb.getId();
}
}