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https://issues.apache.org/jira/browse/SCB-706?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16529967#comment-16529967
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ASF GitHub Bot commented on SCB-706:
------------------------------------
wujimin commented on a change in pull request #786: [SCB-706]refactor
loadbalance filters logic to support invocation based filter
URL:
https://github.com/apache/incubator-servicecomb-java-chassis/pull/786#discussion_r199508274
##########
File path:
handlers/handler-loadbalance/src/main/java/org/apache/servicecomb/loadbalance/filter/ZoneAwareServerListFilterExt.java
##########
@@ -20,33 +20,53 @@
import java.util.ArrayList;
import java.util.List;
-import org.apache.servicecomb.loadbalance.CseServer;
+import org.apache.servicecomb.core.Invocation;
+import org.apache.servicecomb.loadbalance.LoadBalancer;
+import org.apache.servicecomb.loadbalance.ServiceCombServer;
import org.apache.servicecomb.loadbalance.ServerListFilterExt;
import org.apache.servicecomb.serviceregistry.RegistryUtils;
import
org.apache.servicecomb.serviceregistry.api.registry.MicroserviceInstance;
+import com.netflix.config.DynamicPropertyFactory;
import com.netflix.loadbalancer.Server;
public class ZoneAwareServerListFilterExt implements ServerListFilterExt {
Review comment:
is it possible that move old filters to DiscoveryFilter?
so that we can cache filter result in most scenes
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> refactor loadbalance filters logic to support invocation based filter
> ---------------------------------------------------------------------
>
> Key: SCB-706
> URL: https://issues.apache.org/jira/browse/SCB-706
> Project: Apache ServiceComb
> Issue Type: Improvement
> Reporter: liubao
> Assignee: liubao
> Priority: Major
>
> Why we do this?
> # When implement invocation based filter, e.g. darklaunch deployment, we
> need to filter servers based on invocation parameters. But now, we create a
> Loadbalaner instance for each service, and Robin filter interface can not
> pass Invocation to it. Before refactor, we doing this by ThreadLocal and
> cache Invocation, and use in filter implementation. This is error prone and
> users can't handle this complixity
> # We have other improvements, e.g. SCB-700, we can do server status check,
> and add a filter a choose from active servers. We need to consider filter
> orders and other feature, current implementation not satisfy this.
> # We want to make loadbalance code handy by remove some compatible fixes.
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