Module io.helidon.grpc.metrics

Package io.helidon.grpc.metrics

Class GrpcMetrics

java.lang.Object

io.helidon.grpc.metrics.GrpcMetrics

All Implemented Interfaces:

io.grpc.ServerInterceptor, MethodDescriptor.Configurer, ServiceDescriptor.Configurer

@Priority(1002)
public class GrpcMetrics
extends Object
implements io.grpc.ServerInterceptor, ServiceDescriptor.Configurer, MethodDescriptor.Configurer

A ServerInterceptor that enables capturing of gRPC call metrics.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	GrpcMetrics.NamingFunction	Implemented by classes that can create a metric name.

Method Summary

Modifier and Type	Method	Description
static GrpcMetrics	concurrentGauge()	A static factory method to create a GrpcMetrics instance to time gRPC method calls.
void	configure(MethodDescriptor.Rules rules)	Apply extra configuration to a MethodDescriptor.Rules.
void	configure(ServiceDescriptor.Rules rules)	Apply extra configuration to a ServiceDescriptor.Rules.
static GrpcMetrics	counted()	A static factory method to create a GrpcMetrics instance to count gRPC method calls.
GrpcMetrics	description(String description)	Set the description to apply to the metric.
GrpcMetrics	displayName(String displayName)	Set the display name to apply to the metric.
boolean	equals(Object o)
int	hashCode()
static GrpcMetrics	histogram()	A static factory method to create a GrpcMetrics instance to create a histogram of gRPC method calls.
<ReqT, RespT> io.grpc.ServerCall.Listener<ReqT>	interceptCall(io.grpc.ServerCall<ReqT,RespT> call, io.grpc.Metadata headers, io.grpc.ServerCallHandler<ReqT,RespT> next)
static GrpcMetrics	metered()	A static factory method to create a GrpcMetrics instance to meter gRPC method calls.
MetricType	metricType()	Obtain the MetricType.
GrpcMetrics	nameFunction(GrpcMetrics.NamingFunction function)	Set the GrpcMetrics.NamingFunction to use to generate the metric name.
static GrpcMetrics	simplyTimed()	A static factory method to create a GrpcMetrics instance to time gRPC method calls.
GrpcMetrics	tags(Map<String,String> tags)	Set the tags to apply to the metric.
static GrpcMetrics	timed()	A static factory method to create a GrpcMetrics instance to time gRPC method calls.
GrpcMetrics	units(String units)	Set the units to apply to the metric.

Methods inherited from class java.lang.Object

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

Method Details

configure

public void configure(MethodDescriptor.Rules rules)

Description copied from interface: MethodDescriptor.Configurer

Apply extra configuration to a MethodDescriptor.Rules.

Specified by:

configure in interface MethodDescriptor.Configurer

Parameters:

rules - the MethodDescriptor.Rules to configure

configure

public void configure(ServiceDescriptor.Rules rules)

Description copied from interface: ServiceDescriptor.Configurer

Apply extra configuration to a ServiceDescriptor.Rules.

Specified by:

configure in interface ServiceDescriptor.Configurer

Parameters:

rules - the ServiceDescriptor.Rules to configure

tags

public GrpcMetrics tags(Map<String,String> tags)

Set the tags to apply to the metric.

Parameters:

tags - the tags to apply to the metric

Returns:

a GrpcMetrics interceptor

See Also:

• Metadata

description

public GrpcMetrics description(String description)

Set the description to apply to the metric.

Parameters:

description - the description to apply to the metric

Returns:

a GrpcMetrics interceptor

See Also:

• Metadata

displayName

public GrpcMetrics displayName(String displayName)

Set the display name to apply to the metric.

Parameters:

displayName - the display name to apply to the metric

Returns:

a GrpcMetrics interceptor

See Also:

• Metadata

units

public GrpcMetrics units(String units)

Set the units to apply to the metric.

Parameters:

units - the units to apply to the metric

Returns:

a GrpcMetrics interceptor

See Also:

• Metadata

metricType

public MetricType metricType()

Obtain the MetricType.

Returns:

the MetricType

nameFunction

public GrpcMetrics nameFunction(GrpcMetrics.NamingFunction function)

Set the GrpcMetrics.NamingFunction to use to generate the metric name.

The default name will be the <service-name>.<method-name>.

Parameters:

function - the function to use to create the metric name

Returns:

a GrpcMetrics interceptor

counted

public static GrpcMetrics counted()

A static factory method to create a GrpcMetrics instance to count gRPC method calls.

Returns:

a GrpcMetrics instance to capture call counts

metered

public static GrpcMetrics metered()

A static factory method to create a GrpcMetrics instance to meter gRPC method calls.

Returns:

a GrpcMetrics instance to meter gRPC calls

histogram

public static GrpcMetrics histogram()

A static factory method to create a GrpcMetrics instance to create a histogram of gRPC method calls.

Returns:

a GrpcMetrics instance to create a histogram of gRPC method calls

timed

public static GrpcMetrics timed()

A static factory method to create a GrpcMetrics instance to time gRPC method calls.

Returns:

a GrpcMetrics instance to time gRPC method calls

concurrentGauge

public static GrpcMetrics concurrentGauge()

A static factory method to create a GrpcMetrics instance to time gRPC method calls.

Returns:

a GrpcMetrics instance to time gRPC method calls

simplyTimed

public static GrpcMetrics simplyTimed()

A static factory method to create a GrpcMetrics instance to time gRPC method calls.

Returns:

a GrpcMetrics instance to time gRPC method calls

interceptCall

public <ReqT,
RespT>
io.grpc.ServerCall.Listener<ReqT> interceptCall(io.grpc.ServerCall<ReqT,RespT> call,
 io.grpc.Metadata headers,
 io.grpc.ServerCallHandler<ReqT,RespT> next)

Specified by:

interceptCall in interface io.grpc.ServerInterceptor

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object