Tags (OpenTracing API 0.32.0-RC1 API)

java.lang.Object
- io.opentracing.tag.Tags

```
public final class Tags
extends Object
```
The following span tags are recommended for instrumentors who are trying to capture more semantic information about the spans. Tracers may expose additional features based on these standardized data points. Tag names follow a general structure of namespacing.

See Also:

https://github.com/opentracing/specification/blob/master/semantic_conventions.md

Field Summary

Fields
Modifier and Type	Field and Description
`static StringTag`	`COMPONENT` COMPONENT is a low-cardinality identifier of the module, library, or package that is instrumented.
`static StringTag`	`DB_INSTANCE` DB_INSTANCE indicates the instance name of Database.
`static StringTag`	`DB_STATEMENT` DB_STATEMENT records a database statement for the given database type.
`static StringTag`	`DB_TYPE` DB_TYPE indicates the type of Database.
`static StringTag`	`DB_USER` DB_USER indicates the user name of Database, e.g.
`static BooleanTag`	`ERROR` ERROR indicates whether a Span ended in an error state.
`static StringTag`	`HTTP_METHOD` HTTP_METHOD records the http method.
`static IntTag`	`HTTP_STATUS` HTTP_STATUS records the http status code of the response.
`static StringTag`	`HTTP_URL` HTTP_URL records the url of the incoming request.
`static StringTag`	`MESSAGE_BUS_DESTINATION` MESSAGE_BUS_DESTINATION records an address at which messages can be exchanged.
`static IntOrStringTag`	`PEER_HOST_IPV4` PEER_HOST_IPV4 records IPv4 host address of the peer.
`static StringTag`	`PEER_HOST_IPV6` PEER_HOST_IPV6 records the IPv6 host address of the peer.
`static StringTag`	`PEER_HOSTNAME` PEER_HOSTNAME records the host name of the peer.
`static IntTag`	`PEER_PORT` PEER_PORT records the port number of the peer.
`static StringTag`	`PEER_SERVICE` PEER_SERVICE records the service name of the peer service.
`static IntTag`	`SAMPLING_PRIORITY` SAMPLING_PRIORITY determines the priority of sampling this Span.
`static StringTag`	`SERVICE` The service name for a span, which overrides any default "service name" property defined in a tracer's config.
`static StringTag`	`SPAN_KIND` SPAN_KIND hints at the relationship between spans, e.g.
`static String`	`SPAN_KIND_CLIENT` A constant for setting the span kind to indicate that it represents a client span.
`static String`	`SPAN_KIND_CONSUMER` A constant for setting the span kind to indicate that it represents a consumer span, in a messaging scenario.
`static String`	`SPAN_KIND_PRODUCER` A constant for setting the span kind to indicate that it represents a producer span, in a messaging scenario.
`static String`	`SPAN_KIND_SERVER` A constant for setting the span kind to indicate that it represents a server span.

Method Summary
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - SPAN_KIND_SERVER
```
public static final String SPAN_KIND_SERVER
```
    A constant for setting the span kind to indicate that it represents a server span.
    
    See Also:
    
    Constant Field Values
  - SPAN_KIND_CLIENT
```
public static final String SPAN_KIND_CLIENT
```
    A constant for setting the span kind to indicate that it represents a client span.
    
    See Also:
    
    Constant Field Values
  - SPAN_KIND_PRODUCER
```
public static final String SPAN_KIND_PRODUCER
```
    A constant for setting the span kind to indicate that it represents a producer span, in a messaging scenario.
    
    See Also:
    
    Constant Field Values
  - SPAN_KIND_CONSUMER
```
public static final String SPAN_KIND_CONSUMER
```
    A constant for setting the span kind to indicate that it represents a consumer span, in a messaging scenario.
    
    See Also:
    
    Constant Field Values
  - SERVICE
```
public static final StringTag SERVICE
```
    The service name for a span, which overrides any default "service name" property defined in a tracer's config. This tag is meant to only be used when a tracer is reporting spans on behalf of another service (for example, a service mesh reporting on behalf of the services it is proxying). This tag does not need to be used when reporting spans for the service the tracer is running in.
    
    See Also:
    
    PEER_SERVICE
  - HTTP_URL
```
public static final StringTag HTTP_URL
```
    HTTP_URL records the url of the incoming request.
  - HTTP_STATUS
```
public static final IntTag HTTP_STATUS
```
    HTTP_STATUS records the http status code of the response.
  - HTTP_METHOD
```
public static final StringTag HTTP_METHOD
```
    HTTP_METHOD records the http method. Case-insensitive.
  - PEER_HOST_IPV4
```
public static final IntOrStringTag PEER_HOST_IPV4
```
    PEER_HOST_IPV4 records IPv4 host address of the peer.
  - PEER_HOST_IPV6
```
public static final StringTag PEER_HOST_IPV6
```
    PEER_HOST_IPV6 records the IPv6 host address of the peer.
  - PEER_SERVICE
```
public static final StringTag PEER_SERVICE
```
    PEER_SERVICE records the service name of the peer service.
    
    See Also:
    
    SERVICE
  - PEER_HOSTNAME
```
public static final StringTag PEER_HOSTNAME
```
    PEER_HOSTNAME records the host name of the peer.
  - PEER_PORT
```
public static final IntTag PEER_PORT
```
    PEER_PORT records the port number of the peer.
  - SAMPLING_PRIORITY
```
public static final IntTag SAMPLING_PRIORITY
```
    SAMPLING_PRIORITY determines the priority of sampling this Span.
  - SPAN_KIND
```
public static final StringTag SPAN_KIND
```
    SPAN_KIND hints at the relationship between spans, e.g. client/server.
  - COMPONENT
```
public static final StringTag COMPONENT
```
    COMPONENT is a low-cardinality identifier of the module, library, or package that is instrumented.
  - ERROR
```
public static final BooleanTag ERROR
```
    ERROR indicates whether a Span ended in an error state.
  - DB_TYPE
```
public static final StringTag DB_TYPE
```
    DB_TYPE indicates the type of Database. For any SQL database, "sql". For others, the lower-case database category, e.g. "cassandra", "hbase", or "redis"
  - DB_INSTANCE
```
public static final StringTag DB_INSTANCE
```
    DB_INSTANCE indicates the instance name of Database. If the jdbc.url="jdbc:mysql://127.0.0.1:3306/customers", instance name is "customers".
  - DB_USER
```
public static final StringTag DB_USER
```
    DB_USER indicates the user name of Database, e.g. "readonly_user" or "reporting_user"
  - DB_STATEMENT
```
public static final StringTag DB_STATEMENT
```
    DB_STATEMENT records a database statement for the given database type. For db.type="SQL", "SELECT * FROM wuser_table". For db.type="redis", "SET mykey "WuValue".
  - MESSAGE_BUS_DESTINATION
```
public static final StringTag MESSAGE_BUS_DESTINATION
```
    MESSAGE_BUS_DESTINATION records an address at which messages can be exchanged. E.g. A Kafka record has an associated "topic name" that can be extracted by the instrumented producer or consumer and stored using this tag.

Class Tags

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

SPAN_KIND_SERVER

SPAN_KIND_CLIENT

SPAN_KIND_PRODUCER

SPAN_KIND_CONSUMER

SERVICE

HTTP_URL

HTTP_STATUS

HTTP_METHOD

PEER_HOST_IPV4

PEER_HOST_IPV6

PEER_SERVICE

PEER_HOSTNAME

PEER_PORT

SAMPLING_PRIORITY

SPAN_KIND

COMPONENT

ERROR

DB_TYPE

DB_INSTANCE

DB_USER

DB_STATEMENT

MESSAGE_BUS_DESTINATION