All Superinterfaces:

AutoCloseable

All Known Subinterfaces:

SolrCache<K,V>, SolrEncoder, SolrFormatter, SolrFragListBuilder, SolrFragmenter, SolrInfoBean, SolrRequestHandler

All Known Implementing Classes:

ActiveTasksListComponent, ActiveTasksListHandler, AnalysisRequestHandlerBase, AuditLoggerPlugin, AuthenticationPlugin, BasicAuthPlugin, BlobHandler, BlockJoinChildQParserPlugin, BlockJoinParentQParserPlugin, BoolQParserPlugin, BoostQParserPlugin, BreakIteratorBoundaryScanner, CaffeineCache, CertAuthPlugin, CollapsingQParserPlugin, CollectionsHandler, ComplexPhraseQParserPlugin, ConfigSetsHandler, ContentStreamHandlerBase, CoreAdminHandler, DebugComponent, DefaultEncoder, DirectUpdateHandler2, DisMaxQParserPlugin, DocumentAnalysisRequestHandler, DumpRequestHandler, ExpandComponent, ExportHandler, ExportQParserPlugin, ExtendedDismaxQParserPlugin, FacetComponent, FacetModule, FieldAnalysisRequestHandler, FieldQParserPlugin, FileFloatSource.ReloadCacheRequestHandler, FiltersQParserPlugin, FunctionQParserPlugin, FunctionRangeQParserPlugin, GapFragmenter, GraphHandler, GraphQParserPlugin, GraphTermsQParserPlugin, HashQParserPlugin, HashRangeQParserPlugin, HealthCheckHandler, HighlightComponent, HighlightingPluginBase, HtmlEncoder, HtmlFormatter, HttpShardHandlerFactory, IGainTermsQParserPlugin, InfoHandler, InstrumentedHttpListenerFactory, InstrumentedHttpRequestExecutor, InstrumentedPoolingHttpClientConnectionManager, JoinQParserPlugin, KnnQParserPlugin, LoggingHandler, LuceneQParserPlugin, LukeRequestHandler, MaxScoreQParserPlugin, MetricsCollectorHandler, MetricsHandler, MinHashQParserPlugin, MLTQParserPlugin, MoreLikeThisComponent, MoreLikeThisHandler, MultiAuthPlugin, MultiDestinationAuditLogger, NestedQParserPlugin, NotFoundRequestHandler, PayloadCheckQParserPlugin, PayloadScoreQParserPlugin, PeerSync, PeerSyncWithLeader, PhrasesIdentificationComponent, PingRequestHandler, PKIAuthenticationPlugin, PluginInfoHandler, PrefixQParserPlugin, PropertiesRequestHandler, PublicKeyHandler, QParserPlugin, QueryCancellationComponent, QueryCancellationHandler, QueryComponent, QueryElevationComponent, RankQParserPlugin, RawQParserPlugin, RealTimeGetComponent, RealTimeGetHandler, RegexFragmenter, ReplicationHandler, RequestHandlerBase, ReRankQParserPlugin, ResponseLogComponent, SchemaHandler, ScoreJoinQParserPlugin, ScoreOrderFragmentsBuilder, SearchComponent, SearchHandler, SecurityConfHandler, SecurityConfHandlerLocal, SecurityConfHandlerZk, SegmentsInfoRequestHandler, ShowFileRequestHandler, SignificantTermsQParserPlugin, SimpleBoundaryScanner, SimpleFragListBuilder, SimpleFragmentsBuilder, SimpleQParserPlugin, SingleFragListBuilder, SolrBoundaryScanner, SolrConfigHandler, SolrCore, SolrFieldCacheBean, SolrFragmentsBuilder, SolrIndexSearcher, SolrInfoMBeanHandler, SolrLogAuditLoggerPlugin, SpatialBoxQParserPlugin, SpatialFilterQParserPlugin, SpellCheckComponent, StandardRequestHandler, StatsComponent, StreamHandler, SuggestComponent, SurroundQParserPlugin, SwitchQParserPlugin, SystemInfoHandler, TaggerRequestHandler, TaskManagementHandler, TermQParserPlugin, TermsComponent, TermsQParserPlugin, TermVectorComponent, TextLogisticRegressionQParserPlugin, ThreadDumpHandler, UpdateHandler, UpdateLog, UpdateRequestHandler, UpdateRequestHandlerApi, UpdateShardHandler, WeightedFragListBuilder, XmlQParserPlugin, ZookeeperInfoHandler, ZookeeperStatusHandler
```
public interface SolrMetricProducer
extends AutoCloseable
```
Used by objects that expose metrics through SolrMetricManager.

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`default void`	`close()`	Implementations should always call `SolrMetricProducer.super.close()` to ensure that metrics with the same life-cycle as this component are properly unregistered.
`SolrMetricsContext`	`getSolrMetricsContext()`	Implementations should return the context used in `initializeMetrics(SolrMetricsContext, String)` to ensure proper cleanup of metrics at the end of the life-cycle of this component.
`static String`	`getUniqueMetricTag(Object o, String parentName)`	Unique metric tag identifies components with the same life-cycle, which should be registered / unregistered together.
`void`	`initializeMetrics(SolrMetricsContext parentContext, String scope)`	Initialize metrics specific to this producer.

- Method Detail
  - getUniqueMetricTag
```
static String getUniqueMetricTag(Object o,
                                 String parentName)
```
    Unique metric tag identifies components with the same life-cycle, which should be registered / unregistered together. It is in the format of A:B:C, where A is the parent of B is the parent of C and so on. If object "B" is unregistered C also must get unregistered. If object "A" is unregistered B and C also must get unregistered.
    
    Parameters:
    
    o - object to create a tag for
    
    parentName - parent object name, or null if no parent exists
  - initializeMetrics
```
void initializeMetrics(SolrMetricsContext parentContext,
                       String scope)
```
    Initialize metrics specific to this producer.
    
    Parameters:
    
    parentContext - parent metrics context. If this component has the same life-cycle as the parent it can simply use the parent context, otherwise it should obtain a child context using SolrMetricsContext.getChildContext(Object) passing this as the child object.
    
    scope - component scope
  - getSolrMetricsContext
```
SolrMetricsContext getSolrMetricsContext()
```
    Implementations should return the context used in initializeMetrics(SolrMetricsContext, String) to ensure proper cleanup of metrics at the end of the life-cycle of this component. This should be the child context if one was created, or null if the parent context was used.
  - close
```
default void close()
            throws IOException
```
    Implementations should always call SolrMetricProducer.super.close() to ensure that metrics with the same life-cycle as this component are properly unregistered. This prevents obscure memory leaks.
    from: https://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html While this interface method is declared to throw Exception, implementers are strongly encouraged to declare concrete implementations of the close method to throw more specific exceptions, or to throw no exception at all if the close operation cannot fail.
    
    Specified by:
    
    close in interface AutoCloseable
    
    Throws:
    
    IOException

Interface SolrMetricProducer

Method Summary

Method Detail

getUniqueMetricTag

initializeMetrics

getSolrMetricsContext

close