Package io.dropwizard.metrics5

Class MetricName

java.lang.Object

io.dropwizard.metrics5.MetricName

All Implemented Interfaces:

Comparable<MetricName>

public class MetricName
extends Object
implements Comparable<MetricName>

A metric name with the ability to include semantic tags. This replaces the previous style where metric names where strictly dot-separated strings.

Constructor Summary

Constructors

Constructor	Description
MetricName(String key, Map<String,String> tags)

Method Summary

Modifier and Type	Method	Description
MetricName	append(MetricName append)	Build the MetricName that is this with another path and tags appended to it.
static MetricName	build(String... parts)	Build a new metric name using the specific path components.
int	compareTo(MetricName o)
static MetricName	empty()	Returns an empty metric name.
boolean	equals(Object o)
String	getKey()
Map<String,String>	getTags()	Returns the tags, sorted by key.
int	hashCode()
MetricName	resolve(String... parts)	Build the MetricName that is this with another path appended to it.
MetricName	tagged(String... pairs)	Same as tagged(Map), but takes a variadic list of arguments.
MetricName	tagged(Map<String,String> add)	Add tags to a metric name and return the newly created MetricName.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Details

MetricName

public MetricName(String key,
 Map<String,String> tags)

Method Details

empty

public static MetricName empty()

Returns an empty metric name.

Returns:

an empty metric name.

getKey

public String getKey()

getTags

public Map<String,String> getTags()

Returns the tags, sorted by key.

Returns:

the tags (immutable), sorted by key.

resolve

public MetricName resolve(String... parts)

Build the MetricName that is this with another path appended to it. The new MetricName inherits the tags of this one.

Parameters:

parts - The extra path elements to add to the new metric.

Returns:

A new metric name relative to the original by the path specified in parts.

tagged

public MetricName tagged(Map<String,String> add)

Add tags to a metric name and return the newly created MetricName.

Parameters:

add - Tags to add.

Returns:

A newly created metric name with the specified tags associated with it.

tagged

public MetricName tagged(String... pairs)

Same as tagged(Map), but takes a variadic list of arguments.

Parameters:

pairs - An even list of strings acting as key-value pairs.

Returns:

A newly created metric name with the specified tags associated with it.

See Also:

• tagged(Map)

append

public MetricName append(MetricName append)

Build the MetricName that is this with another path and tags appended to it.

Semantically equivalent to:
this.resolve(append.getKey()).tagged(append.getTags());

Parameters:

append - The extra name element to add to the new metric.

Returns:

A new metric name with path appended to the original, and tags included from both names.

build

public static MetricName build(String... parts)

Build a new metric name using the specific path components.

Equivalent to:
MetricName.empty().resolve(parts);

Parameters:

parts - Path of the new metric name.

Returns:

A newly created metric name with the specified path.

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

compareTo

public int compareTo(MetricName o)

Specified by:

compareTo in interface Comparable<MetricName>