From 8392ce646e027cf550c562270c8ab0c462ca5999 Mon Sep 17 00:00:00 2001
From: pasant9 <pasan96tennakoon@gmail.com>
Date: Wed, 26 Feb 2025 18:22:33 +0530
Subject: [PATCH] Refactor AI API policy gateway implementation

---
 .../src/main/resources/conf/default.json      |   5 +-
 .../ai_api_endpoints_seq_template.xml         |   2 +-
 .../api_templates/endpoint_template.xml       |  28 +--
 .../src/main/resources/conf/default.json      |   5 +-
 .../ai_api_endpoints_seq_template.xml         |   2 +-
 .../api_templates/endpoint_template.xml       |  28 +--
 .../ai_api_endpoints_seq_template.xml         |  87 --------
 .../api_templates/ai_api_template.xml         | 209 ------------------
 8 files changed, 40 insertions(+), 326 deletions(-)
 delete mode 100644 gateway/modules/distribution/resources/api_templates/ai_api_endpoints_seq_template.xml
 delete mode 100644 gateway/modules/distribution/resources/api_templates/ai_api_template.xml

diff --git a/all-in-one-apim/modules/distribution/product/src/main/resources/conf/default.json b/all-in-one-apim/modules/distribution/product/src/main/resources/conf/default.json
index 65c2ec2cd2..64d8e36a45 100644
--- a/all-in-one-apim/modules/distribution/product/src/main/resources/conf/default.json
+++ b/all-in-one-apim/modules/distribution/product/src/main/resources/conf/default.json
@@ -555,5 +555,8 @@
   "apim.governance.scheduler.thread_pool_size": "20",
   "apim.governance.scheduler.queue_size": "20",
   "apim.governance.scheduler.task_check_interval_minutes": "2",
-  "apim.governance.scheduler.task_cleanup_interval_minutes": "30"
+  "apim.governance.scheduler.task_cleanup_interval_minutes": "30",
+  "apim.ai.default_request_timeout": "30",
+  "apim.ai.failover_configurations.failover_endpoints_limit": "10",
+  "apim.ai.failover_configurations.default_request_timeout": "30"
 }
diff --git a/all-in-one-apim/modules/distribution/resources/api_templates/ai_api_endpoints_seq_template.xml b/all-in-one-apim/modules/distribution/resources/api_templates/ai_api_endpoints_seq_template.xml
index 435b2f1961..af01613b98 100644
--- a/all-in-one-apim/modules/distribution/resources/api_templates/ai_api_endpoints_seq_template.xml
+++ b/all-in-one-apim/modules/distribution/resources/api_templates/ai_api_endpoints_seq_template.xml
@@ -53,7 +53,7 @@
 
 <sequence xmlns="http://ws.apache.org/ns/synapse" name="${endpointKey}_EndpointsSeq${deploymentStage}">
 #if( $defaultEndpoint )
-<filter xpath="$ctx:retryCount > 10">
+<filter xpath="$ctx:retryCount > $retryCount">
 <then>
     #fail_scenario
 </then>
diff --git a/all-in-one-apim/modules/distribution/resources/api_templates/endpoint_template.xml b/all-in-one-apim/modules/distribution/resources/api_templates/endpoint_template.xml
index 908f3bca30..cf859d6505 100644
--- a/all-in-one-apim/modules/distribution/resources/api_templates/endpoint_template.xml
+++ b/all-in-one-apim/modules/distribution/resources/api_templates/endpoint_template.xml
@@ -45,7 +45,7 @@
         #end
 
 
-        #macro ( timeout $config)
+        #macro ( timeout $config $dynamicTimeout)
         #if( $config.get("actionSelect") == "neverTimeout" )
         ## print nothing.
         #elseif($config.get("actionDuration")|| $config.get("actionSelect"))
@@ -56,6 +56,9 @@
 #elseif( $endpointClass != "ws" )
         ##add default timeout config for non WS endpoints
 <timeout>
+    #if( $dynamicTimeout )
+    <duration>{get-property('REQUEST_TIMEOUT')}</duration>
+    #end
      <responseAction>fault</responseAction>
 </timeout>
         #end
@@ -86,10 +89,10 @@
 #end
 
         ##macro for http_endpoints in failover and load balance types
-        #macro ( http_endpoint $name $ep )
+        #macro ( http_endpoint $name $ep $dynamicTimeout)
 <endpoint xmlns="http://ws.apache.org/ns/synapse" name="$name">
 <http uri-template="$util.escapeXml($ep.get("url"))">
-#timeout( $ep.get('config') )
+#timeout( $ep.get('config') $dynamicTimeout)
 #if($enableRetryCallWithNewOauthToken)
     #set( $endpointSecurity = $endpoint_security.get($type) )
     #if($endpointSecurity.type == "oauth" || $endpointSecurity.type == "OAUTH")
@@ -157,7 +160,7 @@
 <endpoint xmlns="http://ws.apache.org/ns/synapse" name="${name}_${websocketResourceKey}">
 <property name="OUT_ONLY" value="true"/>
 <http uri-template="$util.escapeXml($endpointUrl)">
-#timeout( $ep.get('config') )
+#timeout( $ep.get('config') false)
 </http>
 <property name="ENDPOINT_ADDRESS" value="$util.escapeXml($endpointUrl)"/>
 </endpoint>
@@ -175,7 +178,7 @@ format="$advance_ep.get("format")"
 optimize="$advance_ep.get("optimize")"
 #end
 >
-#timeout( $ep.get('config') )
+#timeout( $ep.get('config') false)
 </address>
 <property name="ENDPOINT_ADDRESS" value="$util.escapeXml($ep.get("url"))"/>
         </endpoint>
@@ -204,10 +207,9 @@ optimize="$advance_ep.get("optimize")"
 
         #if($endpointUuid && "$endpointUuid" != "")
             #set( $ep_key = "${endpointKey}_API_LLMEndpoint_${endpointUuid}" )
-        #end
-
-        #if( $endpointClass == "http" )
-            #http_endpoint( $ep_key $endpoints )
+            #http_endpoint( $ep_key $endpoints true)
+        #elseif( $endpointClass == "http" )
+            #http_endpoint( $ep_key $endpoints false)
         #elseif( $endpointClass == "ws" )
             #websocket_endpoint( $ep_key )
         #elseif( $endpointClass == "address" )
@@ -219,14 +221,14 @@ optimize="$advance_ep.get("optimize")"
     #if($endpoints.get("endpoint_type") == "address")
     #address_endpoint("${ep_key}_0" $endpoints)
     #else
-    #http_endpoint("${ep_key}_0" $endpoints)
+    #http_endpoint("${ep_key}_0" $endpoints false)
     #end
     #set( $i = 1)
     #foreach($endpoint in $failover_endpoints)
     #if($endpoint.get("endpoint_type") == "address")
     #address_endpoint("${ep_key}_$i" $endpoint)
     #else
-    #http_endpoint("${ep_key}_$i" $endpoint)
+    #http_endpoint("${ep_key}_$i" $endpoint false)
     #end
     #set( $i = $i + 1)
     #end
@@ -250,7 +252,7 @@ optimize="$advance_ep.get("optimize")"
         #if($endpoint.get("endpoint_type") == "address")
         #address_endpoint("${ep_key}_$i" $endpoint)
         #else
-        #http_endpoint("${ep_key}_$i" $endpoint)
+        #http_endpoint("${ep_key}_$i" $endpoint false)
         #end
         #set( $i = $i + 1)
         #end
@@ -259,7 +261,7 @@ optimize="$advance_ep.get("optimize")"
         #elseif ($endpointClass == "default")
 <endpoint xmlns="http://ws.apache.org/ns/synapse" name="$ep_key">
 <default>
-    #timeout( $endpoints.get('config') )
+    #timeout( $endpoints.get('config') false)
 </default>
 </endpoint>
         #end
diff --git a/api-control-plane/modules/distribution/product/src/main/resources/conf/default.json b/api-control-plane/modules/distribution/product/src/main/resources/conf/default.json
index 65c2ec2cd2..64d8e36a45 100644
--- a/api-control-plane/modules/distribution/product/src/main/resources/conf/default.json
+++ b/api-control-plane/modules/distribution/product/src/main/resources/conf/default.json
@@ -555,5 +555,8 @@
   "apim.governance.scheduler.thread_pool_size": "20",
   "apim.governance.scheduler.queue_size": "20",
   "apim.governance.scheduler.task_check_interval_minutes": "2",
-  "apim.governance.scheduler.task_cleanup_interval_minutes": "30"
+  "apim.governance.scheduler.task_cleanup_interval_minutes": "30",
+  "apim.ai.default_request_timeout": "30",
+  "apim.ai.failover_configurations.failover_endpoints_limit": "10",
+  "apim.ai.failover_configurations.default_request_timeout": "30"
 }
diff --git a/api-control-plane/modules/distribution/resources/api_templates/ai_api_endpoints_seq_template.xml b/api-control-plane/modules/distribution/resources/api_templates/ai_api_endpoints_seq_template.xml
index aba25c979c..4ddc3d6b6e 100644
--- a/api-control-plane/modules/distribution/resources/api_templates/ai_api_endpoints_seq_template.xml
+++ b/api-control-plane/modules/distribution/resources/api_templates/ai_api_endpoints_seq_template.xml
@@ -53,7 +53,7 @@
 
 <sequence xmlns="http://ws.apache.org/ns/synapse" name="${endpointKey}_EndpointsSeq${deploymentStage}">
 #if( $defaultEndpoint )
-<filter xpath="$ctx:retryCount > 10">
+<filter xpath="$ctx:retryCount > $retryCount">
     <then>
         #fail_scenario
     </then>
diff --git a/api-control-plane/modules/distribution/resources/api_templates/endpoint_template.xml b/api-control-plane/modules/distribution/resources/api_templates/endpoint_template.xml
index 908f3bca30..5fba82ee7f 100644
--- a/api-control-plane/modules/distribution/resources/api_templates/endpoint_template.xml
+++ b/api-control-plane/modules/distribution/resources/api_templates/endpoint_template.xml
@@ -45,7 +45,7 @@
         #end
 
 
-        #macro ( timeout $config)
+        #macro ( timeout $config $dynamicTimeout)
         #if( $config.get("actionSelect") == "neverTimeout" )
         ## print nothing.
         #elseif($config.get("actionDuration")|| $config.get("actionSelect"))
@@ -56,6 +56,9 @@
 #elseif( $endpointClass != "ws" )
         ##add default timeout config for non WS endpoints
 <timeout>
+    #if( $dynamicTimeout )
+    <duration>{get-property('REQUEST_TIMEOUT')}</duration>
+    #end
      <responseAction>fault</responseAction>
 </timeout>
         #end
@@ -86,10 +89,10 @@
 #end
 
         ##macro for http_endpoints in failover and load balance types
-        #macro ( http_endpoint $name $ep )
+        #macro ( http_endpoint $name $ep $dynamicTimeout )
 <endpoint xmlns="http://ws.apache.org/ns/synapse" name="$name">
 <http uri-template="$util.escapeXml($ep.get("url"))">
-#timeout( $ep.get('config') )
+#timeout( $ep.get('config') $dynamicTimeout)
 #if($enableRetryCallWithNewOauthToken)
     #set( $endpointSecurity = $endpoint_security.get($type) )
     #if($endpointSecurity.type == "oauth" || $endpointSecurity.type == "OAUTH")
@@ -157,7 +160,7 @@
 <endpoint xmlns="http://ws.apache.org/ns/synapse" name="${name}_${websocketResourceKey}">
 <property name="OUT_ONLY" value="true"/>
 <http uri-template="$util.escapeXml($endpointUrl)">
-#timeout( $ep.get('config') )
+#timeout( $ep.get('config') false)
 </http>
 <property name="ENDPOINT_ADDRESS" value="$util.escapeXml($endpointUrl)"/>
 </endpoint>
@@ -175,7 +178,7 @@ format="$advance_ep.get("format")"
 optimize="$advance_ep.get("optimize")"
 #end
 >
-#timeout( $ep.get('config') )
+#timeout( $ep.get('config') false)
 </address>
 <property name="ENDPOINT_ADDRESS" value="$util.escapeXml($ep.get("url"))"/>
         </endpoint>
@@ -204,10 +207,9 @@ optimize="$advance_ep.get("optimize")"
 
         #if($endpointUuid && "$endpointUuid" != "")
             #set( $ep_key = "${endpointKey}_API_LLMEndpoint_${endpointUuid}" )
-        #end
-
-        #if( $endpointClass == "http" )
-            #http_endpoint( $ep_key $endpoints )
+            #http_endpoint( $ep_key $endpoints true)
+        #elseif( $endpointClass == "http" )
+            #http_endpoint( $ep_key $endpoints false)
         #elseif( $endpointClass == "ws" )
             #websocket_endpoint( $ep_key )
         #elseif( $endpointClass == "address" )
@@ -219,14 +221,14 @@ optimize="$advance_ep.get("optimize")"
     #if($endpoints.get("endpoint_type") == "address")
     #address_endpoint("${ep_key}_0" $endpoints)
     #else
-    #http_endpoint("${ep_key}_0" $endpoints)
+    #http_endpoint("${ep_key}_0" $endpoints false)
     #end
     #set( $i = 1)
     #foreach($endpoint in $failover_endpoints)
     #if($endpoint.get("endpoint_type") == "address")
     #address_endpoint("${ep_key}_$i" $endpoint)
     #else
-    #http_endpoint("${ep_key}_$i" $endpoint)
+    #http_endpoint("${ep_key}_$i" $endpoint false)
     #end
     #set( $i = $i + 1)
     #end
@@ -250,7 +252,7 @@ optimize="$advance_ep.get("optimize")"
         #if($endpoint.get("endpoint_type") == "address")
         #address_endpoint("${ep_key}_$i" $endpoint)
         #else
-        #http_endpoint("${ep_key}_$i" $endpoint)
+        #http_endpoint("${ep_key}_$i" $endpoint false)
         #end
         #set( $i = $i + 1)
         #end
@@ -259,7 +261,7 @@ optimize="$advance_ep.get("optimize")"
         #elseif ($endpointClass == "default")
 <endpoint xmlns="http://ws.apache.org/ns/synapse" name="$ep_key">
 <default>
-    #timeout( $endpoints.get('config') )
+    #timeout( $endpoints.get('config') false)
 </default>
 </endpoint>
         #end
diff --git a/gateway/modules/distribution/resources/api_templates/ai_api_endpoints_seq_template.xml b/gateway/modules/distribution/resources/api_templates/ai_api_endpoints_seq_template.xml
deleted file mode 100644
index aba25c979c..0000000000
--- a/gateway/modules/distribution/resources/api_templates/ai_api_endpoints_seq_template.xml
+++ /dev/null
@@ -1,87 +0,0 @@
-<!--
- ~ Copyright (c) 2025, WSO2 LLC (http://www.wso2.org) All Rights Reserved.
- ~
- ~ WSO2 LLC 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.
- -->
-        #####################  Define the macros ######################
-
-        #macro ( print_string_if_exist $field $default)
-        #if($field && "$field" !="")
-        "$field"
-        #else
-        "$default"
-        #end
-        #end
-
-        #macro ( draw_endpoint $type $endpoint )
-        #if($endpoint.endpointSecurityEnabled)
-<class name="org.wso2.carbon.apimgt.gateway.mediators.ApiKeyMediator">
-    <property name="apiKeyIdentifier" value="${endpoint.apiKeyIdentifier}" type="STRING"/>
-    <property name="apiKeyIdentifierType" value="${endpoint.apiKeyIdentifierType}" type="STRING"/>
-    <property name="apiKeyValue" value="${endpoint.apiKeyValue}" type="STRING"/>
-</class>
-        #end
-
-        #if( $endpoint && $endpoint.endpointUuid )
-        #set( $ep_key = "${endpointKey}_API_LLMEndpoint_${endpoint.endpointUuid}" )
-        #else
-        #set( $ep_key = "${endpointKey}_API${deploymentStage}Endpoint")
-        #end
-<call>
-<endpoint xmlns="http://ws.apache.org/ns/synapse" key="$ep_key"/>
-</call>
-        #end
-
-        #macro ( fail_scenario )
-<property name="ERROR_CODE" value="900808"/>
-<property name="ERROR_MESSAGE" value="No active endpoints available. Please try again later."/>
-<property name="CUSTOM_HTTP_SC" value="503"/>
-<sequence key="fault"/>
-        #end
-
-<sequence xmlns="http://ws.apache.org/ns/synapse" name="${endpointKey}_EndpointsSeq${deploymentStage}">
-#if( $defaultEndpoint )
-<filter xpath="$ctx:retryCount > 10">
-    <then>
-        #fail_scenario
-    </then>
-    <else>
-        <property name="retryCount" expression="get-property('default','retryCount') + 1" scope="default"/>
-        <switch source="get-property('TARGET_ENDPOINT')">
-            #foreach( $endpoint in $!endpoints )
-            <case regex="$endpoint.endpointUuid">
-                #draw_endpoint($type, $endpoint)
-            </case>
-            #end
-            <case regex="DEFAULT">
-                #draw_endpoint($type, $defaultEndpoint)
-            </case>
-            <case regex="REJECT">
-                #fail_scenario
-            </case>
-            <case regex="EXIT">
-                <loopback/>
-            </case>
-        </switch>
-        <property name="retryCount" expression="get-property('default','retryCount') + 1" scope="default" action="set"/>
-        <class name="org.wso2.carbon.apimgt.gateway.mediators.AIAPIMediator">
-            <property name="llmProviderId" expression="get-property('default','llmProviderId')" type="STRING"/>
-            <property name="direction" value="OUT" type="STRING"/>
-        </class>
-        <sequence key="${endpointKey}_EndpointsSeq${deploymentStage}" />
-    </else>
-</filter>
-#end
-</sequence>
\ No newline at end of file
diff --git a/gateway/modules/distribution/resources/api_templates/ai_api_template.xml b/gateway/modules/distribution/resources/api_templates/ai_api_template.xml
deleted file mode 100644
index 3224dc642b..0000000000
--- a/gateway/modules/distribution/resources/api_templates/ai_api_template.xml
+++ /dev/null
@@ -1,209 +0,0 @@
-<!--
- ~ Copyright (c) 2025, WSO2 LLC (http://www.wso2.org) All Rights Reserved.
- ~
- ~ WSO2 LLC 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.
- -->
-
-        #####################  Define the macros ######################
-
-        #macro ( print_string_if_exist $field $default)
-        #if($field && "$field" !="")
-        "$field"
-        #else
-        "$default"
-        #end
-        #end
-
-        ######################## End of Macros ######################################
-
-
-<api xmlns="http://ws.apache.org/ns/synapse"
-     name="$!apiName"
-     context="$!apiContext"
-     version="$!apiVersion"
-     transports="$!transport"
-     version-type="context"
->
-    #set( $originalEndPointConfig = $endpoint_config )
-    #if( $apiIsBlocked )
-    ## if API is blocked send the API Block message
-    <resource methods="GET POST PUT DELETE PATCH" url-mapping="/*" faultSequence=#print_string_if_exist($faultSequence "fault")>
-    <inSequence>
-        <payloadFactory>
-            <format>
-                <am:fault xmlns:am="http://wso2.org/apimanager">
-                    <am:code>700700</am:code>
-                    <am:message>API blocked</am:message>
-                    <am:description>This API has been blocked temporarily. Please try again later or contact the system administrators.</am:description>
-                </am:fault>
-            </format>
-        </payloadFactory>
-        <property name="HTTP_SC" value="503" scope="axis2"/>
-        <property name="RESPONSE" value="true"/>
-        <property name="NO_ENTITY_BODY" scope="axis2" action="remove"/>
-        <header name="To" action="remove"/>
-        <send/>
-    </inSequence>
-</resource>
-        #else
-        ## api not blocked
-        #set ( $resourceNo = 0 )
-        #foreach( $resource in $resources )
-        #set( $isGQLWSResource = false )
-        #set( $endpoint_config = $originalEndPointConfig )
-
-<resource xmlns="http://ws.apache.org/ns/synapse"
-        #if( $resource.getUriTemplate().contains("{") ||
-        ($resource.getUriTemplate().contains("*") && !$resource.getUriTemplate().endsWith("/*")) )
-        uri-template="$util.escapeXml($resource.getUriTemplate())"
-        #set( $topic= "$util.escapeXml($resource.getUriTemplate())" )
-        #else
-        url-mapping="$resource.getUriTemplate()"
-        #set( $topic= "$resource.getUriTemplate()" )
-        #end
-
-        #if( $isSubscriptionAvailable )
-        binds-to="default"
-        #set( $isGQLWSResource = false )
-        #end
-        methods="$resource.getMethodsAsString()"
-
-        faultSequence=#print_string_if_exist($faultSequence "fault")>
-<inSequence>
-<header name="Accept-Encoding" scope="transport" action="remove"/>
-<property name="llmProviderId" value="$util.escapeXml($!llmProviderId)" scope="default" type="STRING"/>
-<class name="org.wso2.carbon.apimgt.gateway.mediators.AIAPIMediator">
-    <property name="llmProviderId" expression="get-property('default','llmProviderId')" type="STRING"/>
-    <property name="direction" value="IN" type="STRING"/>
-</class>
-<property name="retryCount" value="0" scope="default"/>
-<property name="api.ut.backendRequestTime" expression="get-property('SYSTEM_TIME')"/>
-##############  define the filter based on environment type production only, sandbox only , hybrid ############
-
-#if( ($environmentType == 'sandbox') || ($environmentType =='hybrid'
-&& !$endpoint_config.get("production_endpoints")) )
-#set( $filterRegex = "SANDBOX" )
-#else
-#set( $filterRegex = "PRODUCTION" )
-#end
-#if( $endpoint_config.get("endpoint_type") == 'sequence_backend' )
-#if( $endpoint_config.get("sandbox"))
-#set( $sequenceKey = $endpoint_config.get("sandbox") )
-<filter source="$ctx:AM_KEY_TYPE" regex="SANDBOX">
-    <then>
-        <sequence key="$sequenceKey"/>
-        <loopback/>
-    </then>
-    <else/>
-</filter>
-#end
-#if( $endpoint_config.get("production"))
-#set( $sequenceKey = $endpoint_config.get("production") )
-<filter source="$ctx:AM_KEY_TYPE" regex="PRODUCTION">
-    <then>
-        <sequence key="$sequenceKey"/>
-        <loopback/>
-    </then>
-    <else/>
-</filter>
-#end
-#else
-<filter source="$ctx:AM_KEY_TYPE" regex="$filterRegex">
-    <then>
-        #if( ($environmentType == 'sandbox') || ($environmentType == 'hybrid' && !$defaultProductionEndpoint)) )
-        #if( $defaultSandboxEndpoint )
-        <sequence key="${endpointKey}_EndpointsSeqSANDBOX" />
-        #end
-        #else
-        #if( $defaultProductionEndpoint )
-        <sequence key="${endpointKey}_EndpointsSeqPRODUCTION" />
-        #end
-        #end
-    </then>
-    <else>
-        #if( $environmentType !='hybrid' )
-        #if( $resource.getAuthType() == 'None' && $environmentType == 'sandbox' && $defaultSandboxEndpoint)) )
-        #if( $defaultSandboxEndpoint )
-        <sequence key="${endpointKey}_EndpointsSeqSANDBOX" />
-        #end
-        #else
-        <payloadFactory>
-            <format>
-                <error xmlns="">
-                    #if( $environmentType == 'production' )
-                    <message>Sandbox Key Provided for Production Gateway</message>
-                    #elseif( $environmentType == 'sandbox' )
-                    <message>Production Key Provided for Sandbox Gateway</message>
-                    #end
-                </error>
-            </format>
-        </payloadFactory>
-        <property name="ContentType" value="application/xml" scope="axis2"/>
-        <property name="RESPONSE" value="true"/>
-        <header name="To" action="remove"/>
-        <property name="HTTP_SC" value="401" scope="axis2"/>
-        <property name="NO_ENTITY_BODY" scope="axis2" action="remove"/>
-        <send/>
-        #end
-        #else
-        #if( $defaultSandboxEndpoint && $defaultProductionEndpoint )
-        <sequence key="${endpointKey}_EndpointsSeqSANDBOX" />
-        #elseif( $defaultProductionEndpoint )
-        <sequence key="_sandbox_key_error_"/>
-        #elseif( $defaultSandboxEndpoint )
-        #if( $resource.getAuthType() == 'None' )
-        <sequence key="${endpointKey}_EndpointsSeqSANDBOX" />
-        #else
-        <sequence key="_production_key_error_"/>
-        #end
-        #end
-        #end
-    </else>
-</filter>
-#end
-</inSequence>
-<outSequence>
-<send/>
-</outSequence>
-        </resource>
-        #set ($resourceNo = $resourceNo + 1 )
-        #end  ## end of resource iterator
-        ## print the handlers
-        #if( $handlers.size() > 0 )
-<handlers xmlns="http://ws.apache.org/ns/synapse">
-#foreach( $handler in $handlers )
-<handler xmlns="http://ws.apache.org/ns/synapse" class="$handler.className">
-    #if($handler.hasProperties())
-    #set ($map = $handler.getProperties() )
-    #foreach($property in $map.entrySet())
-    <property name="$!property.key" value="$!property.value"/>
-    #end
-    #end
-</handler>
-#end
-## check and set enable schema validation
-#if($enableSchemaValidation)
-<handler class="org.wso2.carbon.apimgt.gateway.handlers.security.SchemaValidator"/>
-#end
-</handlers>
-        #end
-        #end
-        ## end of apiIsBlocked check
-<handlers>
-<handler class="org.wso2.carbon.apimgt.gateway.handlers.security.CORSRequestHandler">
-    <property name="inline" value="INLINE"/>
-</handler>
-</handlers>
-        </api>
\ No newline at end of file