https://issues.apache.org/bugzilla/show_bug.cgi?id=57155
Bug ID: 57155
Summary: Allow Context without real docbase in embedded Tomcat
Product: Tomcat 8
Version: trunk
Hardware: PC
Status: NEW
Severity: enhancement
Priority: P2
Component: Catalina
Assignee: dev@tomcat.apache.org
Reporter: knst.koli...@gmail.com
Many of Tomcat test cases do the following to create and configure a web
application programmatically:
// Must have a real docBase - just use temp
Context ctx =
tomcat.addContext("", System.getProperty("java.io.tmpdir"));
Essentially, it makes Tomcat to serve the contents of the system temporary
directory. Sometimes it results in failures on CI servers (bug 57154 is an
example).
There shall be a way to configure a context that does not need a real docbase.
I do not see a use case for that when running a standalone Tomcat, because
docbase is needed to provide executable code for the application, but I do see
the use case when running embedded Tomcat. In embedded Tomcat the entire web
application can be configured programmatically.
If I use a non-existent docbase, e.g.
Context ctx =
tomcat.addContext("", "ROOT");
Tomcat startup fails with
[[[
Caused by: org.apache.catalina.LifecycleException: Failed to start component
[StandardEngine[Tomcat].StandardHost[localhost].StandardContext[]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
... 6 more
Caused by: org.apache.catalina.LifecycleException: Failed to start component
[org.apache.catalina.webresources.StandardRoot@123f26]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
at
org.apache.catalina.core.StandardContext.resourcesStart(StandardContext.java:4875)
at
org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5004)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
... 6 more
Caused by: java.lang.IllegalArgumentException: The main resource set specified
[(censored)\test-tmp\webapps\ROOT] is not valid
at
org.apache.catalina.webresources.StandardRoot.startInternal(StandardRoot.java:665)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
... 9 more
]]]
If I do the following:
Context ctx =
tomcat.addContext("", "");
the test passes successfully. Apparently it is using docBase = appBase. An odd
configuration, but it works if there are no other web applications in appBase.
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