DefaultGuiceModule should validate required properties
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Key: SHINDIG-484
URL: https://issues.apache.org/jira/browse/SHINDIG-484
Project: Shindig
Issue Type: Improvement
Reporter: Paul Lindner
Before we call
Names.bindProperties(this.binder(), properties);
we should do basic validation of the parameters we're injecting. Currently
server startup or servlet init will croak
with cryptic error messages if the appropriate parameters are not specified.
For example I spent a few hours with this error:
SEVERE: Allocate exception for servlet xml-to-html
com.google.inject.ConfigurationException: Error at
org.apache.shindig.gadgets.servlet.GadgetRenderingServlet.setGadgetRenderer(GadgetRenderingServlet.java:38)
Binding to
com.google.inject.Provider<org.apache.shindig.gadgets.servlet.GadgetRenderingTask>
not found. No bindings to that type were found.
And this was actually caused by a missing String binding for "features.default"
for GadgetFeatureRegistry
public GadgetFeatureRegistry(@Named("features.default") String featureFiles,
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