Hi all,
I have a problem running cemerick/friend with lein ring. When I start the
application with lein ring server-headless, I just get a warning (WARNING:
identity already refers to: #'clojure.core/identity in namespace:
civi.core, being replaced by: #'cemerick.friend/identity) but am able to
proceed running the app without problems.
If I update the the code to trigger a ring reload, I get the following
stacktrace and the running application is not updated:
Exception: java.lang.IllegalStateException: identity already refers to:
#'cemerick.friend/identity in namespace: civi.core
Namespace.java:88
clojure.lang.Namespace.warnOrFailOnReplace
Namespace.java:110 clojure.lang.Namespace.reference
Namespace.java:168 clojure.lang.Namespace.refer
core.clj:3850 clojure.core/refer
RestFn.java:410 clojure.lang.RestFn.invoke
core.clj:1 civi.core/eval1587[fn]
core.clj:1 civi.core/eval1587
Compiler.java:6619 clojure.lang.Compiler.eval
Compiler.java:6608 clojure.lang.Compiler.eval
Compiler.java:7064 clojure.lang.Compiler.load
RT.java:370 clojure.lang.RT.loadResourceScript
RT.java:361 clojure.lang.RT.loadResourceScript
RT.java:440 clojure.lang.RT.load
RT.java:411 clojure.lang.RT.load
core.clj:5530 clojure.core/load[fn]
core.clj:5529 clojure.core/load
RestFn.java:408 clojure.lang.RestFn.invoke
core.clj:5336 clojure.core/load-one
core.clj:5375 clojure.core/load-lib[fn]
core.clj:5374 clojure.core/load-lib
RestFn.java:142 clojure.lang.RestFn.applyTo
core.clj:619 clojure.core/apply
core.clj:5413 clojure.core/load-libs
RestFn.java:137 clojure.lang.RestFn.applyTo
core.clj:619 clojure.core/apply
core.clj:5496 clojure.core/require
RestFn.java:421 clojure.lang.RestFn.invoke
reload.clj:17 ring.middleware.reload/wrap-reload[fn]
stacktrace.clj:15
ring.middleware.stacktrace/wrap-stacktrace-log[fn]
stacktrace.clj:79
ring.middleware.stacktrace/wrap-stacktrace-web[fn]
jetty.clj:18 ring.adapter.jetty/proxy-handler[fn]
.....
In the application, I have :use [cemerick.friend :as friend], where indeed
a identity function is defined. Here is the clojure code that gives me a
warning the first time and error the second time:
private void warnOrFailOnReplace(Symbol sym, Object o, Object v){
if (o instanceof Var)
{
Namespace ns = ((Var)o).ns;
if (ns == this)
return;
if (ns != RT.CLOJURE_NS)
throw new IllegalStateException(sym + " already refers to: " + o +
" in namespace: " + name);
}
RT.errPrintWriter().println("WARNING: " + sym + " already refers to: "
+ o + " in namespace: " + name
+ ", being replaced by: " + v);
}
Any suggestions on how to solve this? Now I have to stop/start the server
for ever change which is not very good workflow.
Regards,
Assen Kolov
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