io.micronaut.tracing.interceptor

Class TraceInterceptor

java.lang.Object

io.micronaut.tracing.interceptor.TraceInterceptor

All Implemented Interfaces:

Interceptor<java.lang.Object,java.lang.Object>, MethodInterceptor<java.lang.Object,java.lang.Object>, Ordered

@Singleton
 @Requires(beans=io.opentracing.Tracer.class)
public class TraceInterceptor
extends java.lang.Object
implements MethodInterceptor<java.lang.Object,java.lang.Object>

An interceptor that implements tracing logic for ContinueSpan and NewSpan. Using the Open Tracing API.

Since:

1.0

Author:

graemerocher

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	CLASS_TAG
static java.lang.String	METHOD_TAG

Fields inherited from interface io.micronaut.aop.Interceptor

ARGUMENT, CACHEABLE_LAZY_TARGET, HOTSWAP, LAZY, PROXY_TARGET

Fields inherited from interface io.micronaut.core.order.Ordered

HIGHEST_PRECEDENCE, LOWEST_PRECEDENCE

Constructor Summary

Constructors

Constructor and Description
TraceInterceptor(io.opentracing.Tracer tracer, ConversionService<?> conversionService) Initialize the interceptor with tracer and conversion service.

Method Summary

Modifier and Type	Method and Description
int	getOrder()
java.lang.Object	intercept(MethodInvocationContext<java.lang.Object,java.lang.Object> context) Extended version of the MethodInterceptor.intercept(InvocationContext) method that accepts a MethodInvocationContext.
static void	logError(io.opentracing.Span span, java.lang.Throwable e) Logs an error to the span.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface io.micronaut.aop.MethodInterceptor

intercept

Field Detail

CLASS_TAG

public static final java.lang.String CLASS_TAG

See Also:

Constant Field Values

METHOD_TAG

public static final java.lang.String METHOD_TAG

See Also:

Constant Field Values

Constructor Detail

TraceInterceptor

public TraceInterceptor(io.opentracing.Tracer tracer,
                        ConversionService<?> conversionService)

Initialize the interceptor with tracer and conversion service.

Parameters:

tracer - For span creation and propagation across arbitrary transports

conversionService - A service to convert from one type to another

Method Detail

getOrder

public int getOrder()

Specified by:

getOrder in interface Ordered

Returns:

The order of the object. Defaults to zero (no order).

intercept

@Nullable
public java.lang.Object intercept(MethodInvocationContext<java.lang.Object,java.lang.Object> context)

Description copied from interface: MethodInterceptor

Extended version of the MethodInterceptor.intercept(InvocationContext) method that accepts a MethodInvocationContext.

Specified by:

intercept in interface MethodInterceptor<java.lang.Object,java.lang.Object>

Parameters:

context - The context

Returns:

The result

logError

public static void logError(io.opentracing.Span span,
                            java.lang.Throwable e)

Logs an error to the span.

Parameters:

span - The span

e - The error