Package zipkin2.storage

Class InMemoryStorage

java.lang.Object
zipkin2.Component
zipkin2.storage.StorageComponent
zipkin2.storage.InMemoryStorage
All Implemented Interfaces:
Closeable, AutoCloseable, AutocompleteTags, ServiceAndSpanNames, SpanConsumer, SpanStore, Traces
public final class InMemoryStorage
extends StorageComponent
implements SpanStore, SpanConsumer, AutocompleteTags, ServiceAndSpanNames, Traces
Test storage component that keeps all spans in memory, accepting them on the calling thread.

Internally, spans are indexed on 64-bit trace ID

Here's an example of some traces in memory: 


 spansByTraceIdTimeStamp:
    <aaaa,July 4> --> ( spanA(time:July 4, traceId:aaaa, service:foo, name:GET),
                        spanB(time:July 4, traceId:aaaa, service:bar, name:GET) )
    <cccc,July 4> --> ( spanC(time:July 4, traceId:aaaa, service:foo, name:GET) )
    <bbbb,July 5> --> ( spanD(time:July 5, traceId:bbbb, service:biz, name:GET) )
    <bbbb,July 6> --> ( spanE(time:July 6, traceId:bbbb) service:foo, name:POST )

 traceIdToTraceIdTimeStamps:
    aaaa --> [ <aaaa,July 4> ]
    bbbb --> [ <bbbb,July 5>, <bbbb,July 6> ]
    cccc --> [ <cccc,July 4> ]

 serviceToTraceIds:
    foo --> [ <aaaa>, <cccc>, <bbbb> ]
    bar --> [ <aaaa> ]
    biz --> [ <bbbb> ]

 serviceToSpanNames:
    bar --> ( GET )
    biz --> ( GET )
    foo --> ( GET, POST )