[jira] [Created] (KNOX-2456) SHS links sometimes broken on FINISHED jobs page

["Iain Buclaw (Jira)" <ji...@apache.org>]

Iain Buclaw created KNOX-2456:
---------------------------------

             Summary: SHS links sometimes broken on FINISHED jobs page
                 Key: KNOX-2456
                 URL: https://issues.apache.org/jira/browse/KNOX-2456
             Project: Apache Knox
          Issue Type: Bug
    Affects Versions: 1.4.0
            Reporter: Iain Buclaw


For unexplained reasons, most of the time SHS links are in the format `http://host:port/proxy/application_123_456`, but sometimes they can be `/proxy/application_123_456`.

This causes broken URLs on the page, along with the following logged error.
{noformat}
2020-08-17 11:22:35,653 ERROR knox.gateway (UrlRewriteProcessor.java:rewrite(166)) - Failed to rewrite URL: /proxy/application_1597654526563_0024/, direction: OUT via rule: YARNUI/yarn/outbound/apps/history, status: FAILURE{noformat}
This patch fixes the issue.
{code:java}
--- a/gateway-service-definitions/src/main/resources/services/yarnui/2.7.0/rewrite.xml
+++ b/gateway-service-definitions/src/main/resources/services/yarnui/2.7.0/rewrite.xml
@@ -246,9 +246,13 @@
 </rule>
 
 
-<rule dir="OUT" name="YARNUI/yarn/outbound/apps/history">
-    <match pattern="*://*:*/proxy/{**}"/>
-    <rewrite template="{$frontend[url]}/yarn/proxy/{**}/"/>
+<rule flow="OR" dir="OUT" name="YARNUI/yarn/outbound/apps/history">
+    <match pattern="*://*:*/proxy/{**}">
+        <rewrite template="{$frontend[url]}/yarn/proxy/{**}/"/>
+    </match>
+    <match pattern="/proxy/{**}">
+        <rewrite template="{$frontend[url]}/yarn/proxy/{**}/"/>
+    </match>
 </rule>
 <rule dir="OUT" name="YARNUI/yarn/outbound/apps/history1">
     <match pattern="/proxy/{**}?{**}"/>
{code}



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