Allow counters to be created with same name, provider and source as a deleted one

api/src/main/java/com/cloud/network/as/AutoScaleService.java

@@ -70,6 +70,8 @@ public interface AutoScaleService {
 
     Counter createCounter(CreateCounterCmd cmd);
 
+    Counter getCounter(long counterId);
+
     boolean deleteCounter(long counterId) throws ResourceInUseException;
 
     List<? extends Counter> listCounters(ListCountersCmd cmd);

api/src/main/java/org/apache/cloudstack/api/command/admin/autoscale/CreateCounterCmd.java

@@ -17,6 +17,7 @@
 
 package org.apache.cloudstack.api.command.admin.autoscale;
 
+import org.apache.cloudstack.context.CallContext;
 import org.apache.log4j.Logger;
 
 import org.apache.cloudstack.api.APICommand;
@@ -91,16 +92,18 @@
         if (ctr != null) {
             this.setEntityId(ctr.getId());
             this.setEntityUuid(ctr.getUuid());
-            CounterResponse response = _responseGenerator.createCounterResponse(ctr);
-            response.setResponseName(getCommandName());
-            this.setResponseObject(response);
         } else {
             throw new ServerApiException(ApiErrorCode.INTERNAL_ERROR, "Failed to create Counter with name " + getName());
         }
     }
 
     @Override
     public void execute() {
+        CallContext.current().setEventDetails("Guest OS Id: " + getEntityId());
+        Counter ctr = _autoScaleService.getCounter(getEntityId());
+        CounterResponse response = _responseGenerator.createCounterResponse(ctr);
+        response.setResponseName(getCommandName());
+        this.setResponseObject(response);
     }
 
     @Override

engine/schema/src/main/resources/META-INF/db/procedures/cloud.idempotent_drop_unique_key.sql

@@ -0,0 +1,26 @@
+-- Licensed to the Apache Software Foundation (ASF) under one
+-- or more contributor license agreements.  See the NOTICE file
+-- distributed with this work for additional information
+-- regarding copyright ownership.  The ASF licenses this file
+-- to you under the Apache License, Version 2.0 (the
+-- "License"); you may not use this file except in compliance
+-- with the License.  You may obtain a copy of the License at
+--
+--   http://www.apache.org/licenses/LICENSE-2.0
+--
+-- Unless required by applicable law or agreed to in writing,
+-- software distributed under the License is distributed on an
+-- "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+-- KIND, either express or implied.  See the License for the
+-- specific language governing permissions and limitations
+-- under the License.
+
+-- in cloud
+DROP PROCEDURE IF EXISTS `cloud`.`IDEMPOTENT_DROP_UNIQUE_KEY`;
+
+CREATE PROCEDURE `cloud`.`IDEMPOTENT_DROP_UNIQUE_KEY` (
+    IN in_table_name VARCHAR(200),
+    IN in_index_name VARCHAR(200)
+)
+BEGIN
+    DECLARE CONTINUE HANDLER FOR 1091, 1025 BEGIN END; SET @ddl = CONCAT('ALTER TABLE ', in_table_name, ' DROP KEY ', in_index_name); PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt; END;

engine/schema/src/main/resources/META-INF/db/schema-41910to41920.sql

@@ -22,6 +22,9 @@
 -- Add last_id to the volumes table
 CALL `cloud`.`IDEMPOTENT_ADD_COLUMN`('cloud.volumes', 'last_id', 'bigint(20) unsigned DEFAULT NULL');
 
+CALL `cloud`.`IDEMPOTENT_DROP_UNIQUE_KEY`('counter', 'uc_counter__provider__source__value');
+CALL `cloud`.`IDEMPOTENT_ADD_UNIQUE_KEY`('cloud.counter', 'uc_counter__provider__source__value__removed', '(provider, source, value, removed)');
+
 -- Grant access to 2FA APIs for the "Read-Only User - Default" role
 
 CALL `cloud`.`IDEMPOTENT_UPDATE_API_PERMISSION`('Read-Only User - Default', 'setupUserTwoFactorAuthentication', 'ALLOW');

server/src/main/java/com/cloud/network/as/AutoScaleManagerImpl.java

@@ -1474,6 +1474,12 @@
         return counter;
     }
 
+    @Override
+    @ActionEvent(eventType = EventTypes.EVENT_COUNTER_CREATE, eventDescription = "Creating a counter", async = true)
+    public Counter getCounter(long counterId) {
+        return counterDao.findById(counterId);
+    }
+
     @Override
     @ActionEvent(eventType = EventTypes.EVENT_CONDITION_CREATE, eventDescription = "Condition", create = true)
     public Condition createCondition(CreateConditionCmd cmd) {