Web mappings report¶
Report shows all registered servlets and filters (including declared in guice ServletModule).
GuiceBundle.builder()
...
.printWebMappings()
.build()
Example report:
INFO [2019-10-24 07:48:32,601] ru.vyarus.dropwizard.guice.debug.WebMappingsDiagnostic: Web mappings:
MAIN /
├── filter /custom/* CustomMappingFilter (r.v.d.g.d.r.w.s.UserServletsBundle) [ERROR] .custommapping
├── filter /async/* async AsyncFilter (r.v.d.g.d.r.w.s.UserServletsBundle) [REQUEST] .async
├── filter /both/* BothFilter (r.v.d.g.d.r.w.s.UserServletsBundle) [REQUEST] .both
├── filter /1/* MainFilter (r.v.d.g.d.r.w.s.UserServletsBundle) [REQUEST] .main
├── filter /2/* --"--
│
├── filter /* async GuiceFilter (c.g.inject.servlet) [REQUEST] Guice Filter
│ ├── guicefilter /1/* GFilter r.v.d.g.d.r.w.support.GuiceWebModule
│ ├── guicefilter /1/abc?/.* regex GRegexFilter r.v.d.g.d.r.w.support.GuiceWebModule
│ ├── guicefilter /1/foo instance of GFilterInstance r.v.d.g.d.r.w.support.GuiceWebModule
│ ├── guiceservlet /2/* GServlet r.v.d.g.d.r.w.support.GuiceWebModule
│ ├── guiceservlet /2/abc?/ regex GRegexServlet r.v.d.g.d.r.w.support.GuiceWebModule
│ └── guiceservlet /2/foo instance of GServletInstance r.v.d.g.d.r.w.support.GuiceWebModule
│
├── filter /* async AllowedMethodsFilter (i.d.jersey.filter) [REQUEST] io.dropwizard.jersey.filter.AllowedMethodsFilter-5d51e129
├── filter /* async ThreadNameFilter (i.d.servlets) [REQUEST] io.dropwizard.servlets.ThreadNameFilter-21c815e4
│
├── servlet /foo MainServlet (r.v.d.g.d.r.w.s.UserServletsBundle) target
│ └── filter TargetServletFilter (r.v.d.g.d.r.w.s.UserServletsBundle) [REQUEST] .targetservlet
│
├── servlet /bar --"--
├── servlet /both BothServlet (r.v.d.g.d.r.w.s.UserServletsBundle) .both
├── servlet /async async AsyncServlet (r.v.d.g.d.r.w.s.UserServletsBundle) .async
├── servlet /* async JerseyServletContainer (i.d.jersey.setup) io.dropwizard.jersey.setup.JerseyServletContainer-cf518cf
└── servlet / async Default404Servlet (o.e.j.s.ServletHandler) org.eclipse.jetty.servlet.ServletHandler$Default404Servlet-5a6fa56e
ADMIN /
├── filter /both/* BothFilter (r.v.d.g.d.r.w.s.UserServletsBundle) [REQUEST] .both
├── filter /1/* AdminFilter (r.v.d.g.d.r.w.s.UserServletsBundle) [REQUEST] .admin
├── filter /2/* --"--
│
├── filter /* async AdminGuiceFilter (r.v.d.g.m.i.internal) [REQUEST] Guice Filter
│ ├── guicefilter /1/* GFilter r.v.d.g.d.r.w.support.GuiceWebModule
│ ├── guicefilter /1/abc?/.* regex GRegexFilter r.v.d.g.d.r.w.support.GuiceWebModule
│ ├── guicefilter /1/foo instance of GFilterInstance r.v.d.g.d.r.w.support.GuiceWebModule
│ ├── guiceservlet /2/* GServlet r.v.d.g.d.r.w.support.GuiceWebModule
│ ├── guiceservlet /2/abc?/ regex GRegexServlet r.v.d.g.d.r.w.support.GuiceWebModule
│ └── guiceservlet /2/foo instance of GServletInstance r.v.d.g.d.r.w.support.GuiceWebModule
│
├── filter /* async AllowedMethodsFilter (i.d.jersey.filter) [REQUEST] io.dropwizard.jersey.filter.AllowedMethodsFilter-5c080ef3
├── servlet /tasks/* async TaskServlet (i.d.servlets.tasks) tasks
├── servlet /fooadmin AdminServlet (r.v.d.g.d.r.w.s.UserServletsBundle) .admin
├── servlet /baradmin --"--
├── servlet /both BothServlet (r.v.d.g.d.r.w.s.UserServletsBundle) .both
├── servlet /* async AdminServlet (c.c.metrics.servlets) com.codahale.metrics.servlets.AdminServlet-24e83d19
└── servlet / async Default404Servlet (o.e.j.s.ServletHandler) org.eclipse.jetty.servlet.ServletHandler$Default404Servlet-1200458e
Report shows both main and admin contexts.
Note
Filter and servlet names are shown list at each line because they are often autogenerated and hardly readable. Still name is required if you will need to map filter to exact servlet (or to disable/stop exact servlet)
For both filters and servlets async filters and
servlets are explicitly marked with async.
Filters dispatch types are shown at the end of filter line:
├── filter /custom/* CustomMappingFilter (r.v.d.g.d.r.w.s.UserServletsBundle) [ERROR] .custommapping
├── filter /async/* async AsyncFilter (r.v.d.g.d.r.w.s.UserServletsBundle) [REQUEST] .async
If filter is applied by servlet name then it would be rendered below target servlet:
├── servlet /foo MainServlet (r.v.d.g.d.r.w.s.UserServletsBundle) target
│ └── filter TargetServletFilter (r.v.d.g.d.r.w.s.UserServletsBundle) [REQUEST] .targetservlet
Warning
Filters, applied by servlet name are not shown at all if target servets are not registered.
If filter or servlet is applied with multiple target urls then each pattern will start on new line and
only on first line complete information will be shown (idem --"-- string will be used to identify same filter):
├── filter /1/* MainFilter (r.v.d.g.d.r.w.s.UserServletsBundle) [REQUEST] .main
├── filter /2/* --"--
Guice¶
Guice servlets and filters (declared in ServletModules) are shown below guice GuiceFilter
(guice filter actually intercept requests and then manually redirect to matching guice bean):
├── filter /* async GuiceFilter (c.g.inject.servlet) [REQUEST] Guice Filter
│ ├── guicefilter /1/* GFilter r.v.d.g.d.r.w.support.GuiceWebModule
│ ├── guicefilter /1/abc?/.* regex GRegexFilter r.v.d.g.d.r.w.support.GuiceWebModule
│ ├── guicefilter /1/foo instance of GFilterInstance r.v.d.g.d.r.w.support.GuiceWebModule
Attention
Guice servlets and filters are shown in both admin and main contexts, because GuiceFilter is applied on
both contexts and so all urls will work in both contexts.
Note that regex registrations are explicitly markerd with reges
filterRegex("/1/abc?/.*").through(GRegexFilter.class)
State¶
Report also indicate all stopped and disabled items (report below executed under lightweight guicey test, when jetty is not started):
MAIN /
├── filter /custom/* CustomMappingFilter (r.v.d.g.d.r.w.s.UserServletsBundle) STOPPED [ERROR] .custommapping
├── filter /async/* async AsyncFilter (r.v.d.g.d.r.w.s.UserServletsBundle) STOPPED [REQUEST] .async
├── filter /both/* BothFilter (r.v.d.g.d.r.w.s.UserServletsBundle) STOPPED [REQUEST] .both
├── filter /1/* MainFilter (r.v.d.g.d.r.w.s.UserServletsBundle) STOPPED [REQUEST] .main
├── filter /2/* --"--
│
├── filter /* async GuiceFilter (c.g.inject.servlet) STOPPED [REQUEST] Guice Filter
│ ├── guicefilter /1/* GFilter r.v.d.g.d.r.w.support.GuiceWebModule
│ ├── guicefilter /1/abc?/.* regex GRegexFilter r.v.d.g.d.r.w.support.GuiceWebModule
│ ├── guicefilter /1/foo instance of GFilterInstance r.v.d.g.d.r.w.support.GuiceWebModule
│ ├── guiceservlet /2/* GServlet r.v.d.g.d.r.w.support.GuiceWebModule
│ ├── guiceservlet /2/abc?/ regex GRegexServlet r.v.d.g.d.r.w.support.GuiceWebModule
│ └── guiceservlet /2/foo instance of GServletInstance r.v.d.g.d.r.w.support.GuiceWebModule
│
├── servlet /foo MainServlet (r.v.d.g.d.r.w.s.UserServletsBundle) STOPPED target
│ └── filter TargetServletFilter (r.v.d.g.d.r.w.s.UserServletsBundle) STOPPED [REQUEST] .targetservlet
│
├── servlet /bar --"--
├── servlet /both BothServlet (r.v.d.g.d.r.w.s.UserServletsBundle) STOPPED .both
└── servlet /async async AsyncServlet (r.v.d.g.d.r.w.s.UserServletsBundle) STOPPED .async
Here MainServlet is disabled (and stopped) and BothServlet is just stopped.
Tip
Servlet could be disabled like this:
environment.getApplicationContext().getServletHandler()
.getServlet("target").setEnabled(false)
Report customization¶
Report is implemented as guicey event listener and provide additional customization options, so if default configuration (from shortcut methods above) does not fit your needs you can register listener directly with required configuration.
For example, same report by for main context only:
listen(new WebMappingsDiagnostic(new MappingsConfig()
.showMainContext()
.showDropwizardMappings()
.showGuiceMappings()))
Report rendering logic may also be used directly as report provide separate renderer object
implementing ReportRenderer. Renderer not bound to guice context and assume direct instantiation.