Interface Logging (3.13.7) 

public interface Logging extends AutoCloseable, Service<LoggingOptions>

Implements

AutoCloseable, com.google.cloud.Service<com.google.cloud.logging.LoggingOptions>

Methods

create(Exclusion exclusion)

public abstract Exclusion create(Exclusion exclusion)

Creates a new exclusion in a specified parent resource. Only log entries belonging to that resource can be excluded. You can have up to 10 exclusions in a resource.

Example of creating the exclusion:

 {
   @code
   String exclusionName = "my_exclusion_name";
   Exclusion exclusion = Exclusion.of(exclusionName,
       "resource.type=gcs_bucket severity
Parameter
Name Description
exclusion Exclusion
Returns
Type Description
Exclusion

the created exclusion

create(MetricInfo metric)

public abstract Metric create(MetricInfo metric)

Creates a new metric.

Example of creating a metric for logs with severity higher or equal to ERROR.

{ @code String metricName = "my_metric_name"; MetricInfo metricInfo = MetricInfo.of(metricName, "severity>=ERROR"); Metric metric = logging.create(metricInfo); }

Parameter
Name Description
metric MetricInfo
Returns
Type Description
Metric

the created metric

create(SinkInfo sink)

public abstract Sink create(SinkInfo sink)

Creates a new sink.

Example of creating a sink to export logs to a BigQuery dataset (in the LoggingOptions#getProjectId() project).

{ @code String sinkName = "my_sink_name"; String datasetName = "my_dataset"; SinkInfo sinkInfo = SinkInfo.of(sinkName, DatasetDestination.of(datasetName)); Sink sink = logging.create(sinkInfo); }

Parameter
Name Description
sink SinkInfo
Returns
Type Description
Sink

the created sink

createAsync(Exclusion exclusion)

public abstract ApiFuture<Exclusion> createAsync(Exclusion exclusion)

Sends a request to create the exclusion. This method returns an ApiFuture object to consume the result. ApiFuture#get() returns the created exclusion.

Example of asynchronously creating the exclusion:

 {
   @code
   String exclusionName = "my_exclusion_name";
   Exclusion exclusion = Exclusion.of(exclusionName,
       "resource.type=gcs_bucket severity
Parameter
Name Description
exclusion Exclusion
Returns
Type Description
ApiFuture<Exclusion>

createAsync(MetricInfo metric)

public abstract ApiFuture<Metric> createAsync(MetricInfo metric)

Sends a request for creating a metric. This method returns a ApiFuture object to consume the result. ApiFuture#get() returns the created metric.

Example of asynchronously creating a metric for logs with severity higher or equal to ERROR.

{ @code String metricName = "my_metric_name"; MetricInfo metricInfo = MetricInfo.of(metricName, "severity>=ERROR"); ApiFuture<Metric> future = logging.createAsync(metricInfo); // ... Metric metric = future.get(); }

Parameter
Name Description
metric MetricInfo
Returns
Type Description
ApiFuture<Metric>

createAsync(SinkInfo sink)

public abstract ApiFuture<Sink> createAsync(SinkInfo sink)

Sends a request for creating a sink. This method returns a ApiFuture object to consume the result. ApiFuture#get() returns the created sink.

Example of asynchronously creating a sink to export logs to a BigQuery dataset (in the LoggingOptions#getProjectId() project).

{ @code String sinkName = "my_sink_name"; String datasetName = "my_dataset"; SinkInfo sinkInfo = SinkInfo.of(sinkName, DatasetDestination.of(datasetName)); ApiFuture<Sink> future = logging.createAsync(sinkInfo); // ... Sink sink = future.get(); }

Parameter
Name Description
sink SinkInfo
Returns
Type Description
ApiFuture<Sink>

deleteExclusion(String exclusion)

public abstract boolean deleteExclusion(String exclusion)

Deletes the requested exclusion.

Example of deleting the exclusion:

{ @code String exclusionName = "my_exclusion_name"; boolean deleted = logging.deleteExclusion(exclusionName); if (deleted) { // the exclusion was deleted } else { // the exclusion was not found } }

Parameter
Name Description
exclusion String
Returns
Type Description
boolean

true if the exclusion was deleted, false if it was not found

deleteExclusionAsync(String exclusion)

public abstract ApiFuture<Boolean> deleteExclusionAsync(String exclusion)

Sends a request to delete an exclusion. This method returns an ApiFuture object to consume the result. ApiFuture#get() returns true if the exclusion was deleted, false if it was not found.

Example of asynchronously deleting the exclusion:

{ @code String exclusionName = "my_exclusion_name"; ApiFuture<Boolean> future = logging.deleteExclusionAsync(metricName); // ... boolean deleted = future.get(); if (deleted) { // the exclusion was deleted } else { // the exclusion was not found } }

Parameter
Name Description
exclusion String
Returns
Type Description
ApiFuture<Boolean>

deleteLog(String log)

public abstract boolean deleteLog(String log)

Deletes a log and all its log entries. The log will reappear if new entries are written to it.

Example of deleting a log.

{ @code String logName = "my_log_name"; boolean deleted = logging.deleteLog(logName); if (deleted) { // the log was deleted } else { // the log was not found } }

Parameter
Name Description
log String
Returns
Type Description
boolean

true if the log was deleted, false if it was not found

deleteLog(String log, LogDestinationName destination)

public default boolean deleteLog(String log, LogDestinationName destination)

Deletes a log and all its log entries for given log destination (see 'logName' parameter in https://cloud.google.com/logging/docs/reference/v2/rest/v2/LogEntry). The log will reappear if new entries are written to it.

Example of deleting a log by folder destination.

{ @code String logName = "my_log_name"; String folder = "my_folder"; boolean deleted = logging.deleteLog(logName, LogDestinationName.folder(folder)); if (deleted) { // the log was deleted } else { // the log was not found } }

Parameters
Name Description
log String
destination LogDestinationName
Returns
Type Description
boolean

true if the log was deleted, false if it was not found

deleteLogAsync(String log)

public abstract ApiFuture<Boolean> deleteLogAsync(String log)

Sends a request for deleting a log and all its log entries. This method returns a ApiFuture object to consume the result. ApiFuture#get() returns true if the log was deleted, false if it was not found.

Example of asynchronously deleting a log.

{ @code String logName = "my_log_name"; ApiFuture<Boolean> future = logging.deleteLogAsync(logName); // ... boolean deleted = future.get(); if (deleted) { // the log was deleted } else { // the log was not found } }

Parameter
Name Description
log String
Returns
Type Description
ApiFuture<Boolean>

deleteLogAsync(String log, LogDestinationName destination)

public default ApiFuture<Boolean> deleteLogAsync(String log, LogDestinationName destination)

Sends a request for deleting a log and all its log entries for given log destination (see 'logName' parameter in https://cloud.google.com/logging/docs/reference/v2/rest/v2/LogEntry). This method returns a ApiFuture object to consume the result. ApiFuture#get() returns true if the log was deleted, false if it was not found.

Example of asynchronously deleting a log by folder destination.

{ @code String logName = "my_log_name"; String folder = "my_folder"; ApiFuture<Boolean> future = logging.deleteLogAsync(logName, LogDestinationName.folder(folder)); // ... boolean deleted = future.get(); if (deleted) { // the log was deleted } else { // the log was not found } }

Parameters
Name Description
log String
destination LogDestinationName
Returns
Type Description
ApiFuture<Boolean>

deleteMetric(String metric)

public abstract boolean deleteMetric(String metric)

Deletes the requested metric.

Example of deleting a metric.

{ @code String metricName = "my_metric_name"; boolean deleted = logging.deleteMetric(metricName); if (deleted) { // the metric was deleted } else { // the metric was not found } }

Parameter
Name Description
metric String
Returns
Type Description
boolean

true if the metric was deleted, false if it was not found

deleteMetricAsync(String metric)

public abstract ApiFuture<Boolean> deleteMetricAsync(String metric)

Sends a request for deleting a metric. This method returns a ApiFuture object to consume the result. ApiFuture#get() returns true if the metric was deleted, false if it was not found.

Example of asynchronously deleting a metric.

{ @code String metricName = "my_metric_name"; ApiFuture<Boolean> future = logging.deleteMetricAsync(metricName); // ... boolean deleted = future.get(); if (deleted) { // the metric was deleted } else { // the metric was not found } }

Parameter
Name Description
metric String
Returns
Type Description
ApiFuture<Boolean>

deleteSink(String sink)

public abstract boolean deleteSink(String sink)

Deletes the requested sink.

Example of deleting a sink.

{ @code String sinkName = "my_sink_name"; boolean deleted = logging.deleteSink(sinkName); if (deleted) { // the sink was deleted } else { // the sink was not found } }

Parameter
Name Description
sink String
Returns
Type Description
boolean

true if the sink was deleted, false if it was not found

deleteSinkAsync(String sink)

public abstract ApiFuture<Boolean> deleteSinkAsync(String sink)

Sends a request for deleting a sink. This method returns a ApiFuture object to consume the result. ApiFuture#get() returns true if the sink was deleted, false if it was not found.

Example of asynchronously deleting a sink.

{ @code String sinkName = "my_sink_name"; ApiFuture<Boolean> future = logging.deleteSinkAsync(sinkName); // ... boolean deleted = future.get(); if (deleted) { // the sink was deleted } else { // the sink was not found } }

Parameter
Name Description
sink String
Returns
Type Description
ApiFuture<Boolean>

flush()

public abstract void flush()

Flushes any pending asynchronous logging writes. Logs are automatically flushed based on time and message count that be configured via com.google.api.gax.batching.BatchingSettings, Logs are also flushed if enabled, at or above flush severity, see #setFlushSeverity. Logging frameworks require support for an explicit flush. See usage in the java.util.logging handlerLoggingHandler.

getExclusion(String exclusion)

public abstract Exclusion getExclusion(String exclusion)

Gets the description of an exclusion or null if not found.

Example of getting the description of an exclusion:

{ @code String exclusionName = "my_exclusion_name"; Exclusion exclusion = logging.getExclusion(exclusionName); if (exclusion == null) { // exclusion was not found } }

Parameter
Name Description
exclusion String
Returns
Type Description
Exclusion

getExclusionAsync(String exclusion)

public abstract ApiFuture<Exclusion> getExclusionAsync(String exclusion)

Sends a request to get the description of an exclusion . This method returns an ApiFuture object to consume the result. ApiFuture#get() returns the requested exclusion or null if not found.

Example of asynchronously getting the exclusion:

{ @code String exclusionName = "my_exclusion_name"; ApiFuture<Exclusion> future = logging.getExclusionAsync(exclusionName); // ... Exclusion exclusion = future.get(); if (exclusion == null) { // exclusion was not found } }

Parameter
Name Description
exclusion String
Returns
Type Description
ApiFuture<Exclusion>

getFlushSeverity()

public abstract Severity getFlushSeverity()
Returns
Type Description
Severity

getMetric(String metric)

public abstract Metric getMetric(String metric)

Returns the requested metric or null if not found.

Example of getting a metric.

{ @code String metricName = "my_metric_name"; Metric metric = logging.getMetric(metricName); if (metric == null) { // metric was not found } }

Parameter
Name Description
metric String
Returns
Type Description
Metric

getMetricAsync(String metric)

public abstract ApiFuture<Metric> getMetricAsync(String metric)

Sends a request for getting a metric. This method returns a ApiFuture object to consume the result. ApiFuture#get() returns the requested metric or null if not found.

Example of asynchronously getting a metric.

{ @code String metricName = "my_metric_name"; ApiFuture<Metric> future = logging.getMetricAsync(metricName); // ... Metric metric = future.get(); if (metric == null) { // metric was not found } }

Parameter
Name Description
metric String
Returns
Type Description
ApiFuture<Metric>

getSink(String sink)

public abstract Sink getSink(String sink)

Returns the requested sink or null if not found.

Example of getting a sink.

{ @code String sinkName = "my_sink_name"; Sink sink = logging.getSink(sinkName); if (sink == null) { // sink was not found } }

Parameter
Name Description
sink String
Returns
Type Description
Sink

getSinkAsync(String sink)

public abstract ApiFuture<Sink> getSinkAsync(String sink)

Sends a request for getting a sink. This method returns a ApiFuture object to consume the result. ApiFuture#get() returns the requested sink or null if not found.

Example of asynchronously getting a sink.

{ @code String sinkName = "my_sink_name"; ApiFuture<Sink> future = logging.getSinkAsync(sinkName); // ... Sink sink = future.get(); if (sink == null) { // sink was not found } }

Parameter
Name Description
sink String
Returns
Type Description
ApiFuture<Sink>

getWriteSynchronicity()

public abstract Synchronicity getWriteSynchronicity()

Retrieves current set synchronicity Synchronicity of logging writes.

Returns
Type Description
Synchronicity

listExclusions(Logging.ListOption[] options)

public abstract Page<Exclusion> listExclusions(Logging.ListOption[] options)

Lists the exclusion. This method returns a Page object that can be used to consume paginated results. Use ListOption to specify the page size or the page token from which to start listing exclusion.

Example of listing exclusions, specifying the page size:

{ @code Page<Exclusion> exclusions = logging.listMetrics(ListOption.pageSize(100)); Iterator<Exclusion> exclusionIterator = exclusions.iterateAll().iterator(); while (exclusionIterator.hasNext()) { Exclusion exclusion = exclusionIterator.next(); // do something with the exclusion } }

Parameter
Name Description
options ListOption[]
Returns
Type Description
Page<Exclusion>

listExclusionsAsync(Logging.ListOption[] options)

public abstract ApiFuture<AsyncPage<Exclusion>> listExclusionsAsync(Logging.ListOption[] options)

Sends a request for listing exclusions. This method returns an ApiFuture object to consume the result. ApiFuture#get() returns an AsyncPage object that can be used to asynchronously handle paginated results. Use ListOption to specify the page size or the page token from which to start listing exclusions.

Example of asynchronously listing exclusions, specifying the page size:


 ApiFuture<AsyncPage<Exclusion>> future = logging.listExclusionsAsync(ListOption.pageSize(100));
 // ...
 AsyncPage<Exclusion> exclusions = future.get();
 Iterator<Exclusion> exclusionIterator = exclusions.iterateAll().iterator();
 while (exclusionIterator.hasNext()) {
   Exclusion exclusion = exclusionIterator.next();
   // do something with the exclusion
 }
Parameter
Name Description
options ListOption[]
Returns
Type Description
ApiFuture<AsyncPage<Exclusion>>

listLogEntries(Logging.EntryListOption[] options)

public abstract Page<LogEntry> listLogEntries(Logging.EntryListOption[] options)

Lists log entries. This method returns a Page object that can be used to consume paginated results. Use EntryListOption#pageSize(int) to specify the page size. Use EntryListOption#pageToken(String) to specify the page token from which to start listing entries. Use EntryListOption#sortOrder(SortingField, SortingOrder) to sort log entries according to your preferred order (default is most-recent last). Use EntryListOption#filter(String) to filter listed log entries. By default a 24 hour filter is applied.

Example of listing log entries for a specific log.

{ @code String filter = "logName=projects/my_project_id/logs/my_log_name"; Page<LogEntry> entries = logging.listLogEntries(EntryListOption.filter(filter)); Iterator<LogEntry> entryIterator = entries.iterateAll().iterator(); while (entryIterator.hasNext()) { LogEntry entry = entryIterator.next(); // do something with the entry } }

Parameter
Name Description
options EntryListOption[]
Returns
Type Description
Page<LogEntry>

listLogEntriesAsync(Logging.EntryListOption[] options)

public abstract ApiFuture<AsyncPage<LogEntry>> listLogEntriesAsync(Logging.EntryListOption[] options)

Sends a request for listing log entries. This method returns a ApiFuture object to consume the result. ApiFuture#get() returns an AsyncPage object that can be used to asynchronously handle paginated results. Use EntryListOption#pageSize(int) to specify the page size. Use EntryListOption#pageToken(String) to specify the page token from which to start listing entries. Use EntryListOption#sortOrder(SortingField, SortingOrder) to sort log entries according to your preferred order (default is most-recent last). Use EntryListOption#filter(String) to filter listed log entries. By default a 24 hour filter is applied.

Example of asynchronously listing log entries for a specific log.


 String filter = "logName=projects/my_project_id/logs/my_log_name";
 ApiFuture<AsyncPage<LogEntry>> future = logging.listLogEntriesAsync(EntryListOption.filter(filter));
 // ...
 AsyncPage<LogEntry> entries = future.get();
 Iterator<LogEntry> entryIterator = entries.iterateAll().iterator();
 while (entryIterator.hasNext()) {
   LogEntry entry = entryIterator.next();
   // do something with the entry
 }
Parameter
Name Description
options EntryListOption[]
Returns
Type Description
ApiFuture<AsyncPage<LogEntry>>

listLogs(Logging.ListOption[] options)

public default Page<String> listLogs(Logging.ListOption[] options)

Lists the log names. This method returns a Page object that can be used to consume paginated results. Use ListOption to specify the page size or the page token from which to start listing logs.

Example of listing log names, specifying the page size.

{ @code Page<Log> logNames = logging.listLogs(ListOption.pageSize(100)); Iterator<Log> logIterator = logNames.iterateAll().iterator(); while (logIterator.hasNext()) { String logName = logIterator.next(); // do something with the log name } }

Parameter
Name Description
options ListOption[]
Returns
Type Description
Page<String>

listLogsAsync(Logging.ListOption[] options)

public default ApiFuture<AsyncPage<String>> listLogsAsync(Logging.ListOption[] options)

Sends a request for listing log names. This method returns a ApiFuture object to consume the result. ApiFuture#get() returns an AsyncPage object that can be used to asynchronously handle paginated results. Use ListOption to specify the page size or the page token from which to start listing log names.

Example of asynchronously listing log names, specifying the page size.


 ApiFuture<AsyncPage<Log>> future = logging.listLogsAsync(ListOption.pageSize(100));
 // ...
 AsyncPage<Sink> logNames = future.get();
 Iterator<Sink> logIterator = logNames.iterateAll().iterator();
 while (logIterator.hasNext()) {
   String logName = logIterator.next();
   // do something with the log name
 }
Parameter
Name Description
options ListOption[]
Returns
Type Description
ApiFuture<AsyncPage<String>>

listMetrics(Logging.ListOption[] options)

public abstract Page<Metric> listMetrics(Logging.ListOption[] options)

Lists the metrics. This method returns a Page object that can be used to consume paginated results. Use ListOption to specify the page size or the page token from which to start listing metrics.

Example of listing metrics, specifying the page size.

{ @code Page<Metric> metrics = logging.listMetrics(ListOption.pageSize(100)); Iterator<Metric> metricIterator = metrics.iterateAll().iterator(); while (metricIterator.hasNext()) { Metric metric = metricIterator.next(); // do something with the metric } }

Parameter
Name Description
options ListOption[]
Returns
Type Description
Page<Metric>

listMetricsAsync(Logging.ListOption[] options)

public abstract ApiFuture<AsyncPage<Metric>> listMetricsAsync(Logging.ListOption[] options)

Sends a request for listing metrics. This method returns a ApiFuture object to consume the result. ApiFuture#get() returns an AsyncPage object that can be used to asynchronously handle paginated results. Use ListOption to specify the page size or the page token from which to start listing metrics.

Example of asynchronously listing metrics, specifying the page size.


 ApiFuture<AsyncPage<Metric>> future = logging.listMetricsAsync(ListOption.pageSize(100));
 // ...
 AsyncPage<Metric> metrics = future.get();
 Iterator<Metric> metricIterator = metrics.iterateAll().iterator();
 while (metricIterator.hasNext()) {
   Metric metric = metricIterator.next();
   // do something with the metric
 }
Parameter
Name Description
options ListOption[]
Returns
Type Description
ApiFuture<AsyncPage<Metric>>

listMonitoredResourceDescriptors(Logging.ListOption[] options)

public abstract Page<MonitoredResourceDescriptor> listMonitoredResourceDescriptors(Logging.ListOption[] options)

Lists the monitored resource descriptors used by Cloud Logging. This method returns a Page object that can be used to consume paginated results. Use ListOption to specify the page size or the page token from which to start listing resource descriptors.

Example of listing monitored resource descriptors, specifying the page size.

{ @code Page<MonitoredResourceDescriptor> descriptors = logging .listMonitoredResourceDescriptors(ListOption.pageSize(100)); Iterator<MonitoredResourceDescriptor> descriptorIterator = descriptors.iterateAll().iterator(); while (descriptorIterator.hasNext()) { MonitoredResourceDescriptor descriptor = descriptorIterator.next(); // do something with the descriptor } }

Parameter
Name Description
options ListOption[]
Returns
Type Description
Page<com.google.cloud.MonitoredResourceDescriptor>

listMonitoredResourceDescriptorsAsync(Logging.ListOption[] options)

public abstract ApiFuture<AsyncPage<MonitoredResourceDescriptor>> listMonitoredResourceDescriptorsAsync(Logging.ListOption[] options)

Sends a request for listing monitored resource descriptors used by Cloud Logging. This method returns a ApiFuture object to consume the result. ApiFuture#get() returns an AsyncPage object that can be used to asynchronously handle paginated results. Use ListOption to specify the page size or the page token from which to start listing resource descriptors.

Example of asynchronously listing monitored resource descriptors, specifying the page size.


 ApiFuture<AsyncPage<MonitoredResourceDescriptor>> future = logging
     .listMonitoredResourceDescriptorsAsync(ListOption.pageSize(100));
 // ...
 AsyncPage<MonitoredResourceDescriptor> descriptors = future.get();
 Iterator<MonitoredResourceDescriptor> descriptorIterator = descriptors.iterateAll().iterator();
 while (descriptorIterator.hasNext()) {
   MonitoredResourceDescriptor descriptor = descriptorIterator.next();
   // do something with the descriptor
 }
Parameter
Name Description
options ListOption[]
Returns
Type Description
ApiFuture<AsyncPage<com.google.cloud.MonitoredResourceDescriptor>>

listSinks(Logging.ListOption[] options)

public abstract Page<Sink> listSinks(Logging.ListOption[] options)

Lists the sinks. This method returns a Page object that can be used to consume paginated results. Use ListOption to specify the page size or the page token from which to start listing sinks.

Example of listing sinks, specifying the page size.

{ @code Page<Sink> sinks = logging.listSinks(ListOption.pageSize(100)); Iterator<Sink> sinkIterator = sinks.iterateAll().iterator(); while (sinkIterator.hasNext()) { Sink sink = sinkIterator.next(); // do something with the sink } }

Parameter
Name Description
options ListOption[]
Returns
Type Description
Page<Sink>

listSinksAsync(Logging.ListOption[] options)

public abstract ApiFuture<AsyncPage<Sink>> listSinksAsync(Logging.ListOption[] options)

Sends a request for listing sinks. This method returns a ApiFuture object to consume the result. ApiFuture#get() returns an AsyncPage object that can be used to asynchronously handle paginated results. Use ListOption to specify the page size or the page token from which to start listing sinks.

Example of asynchronously listing sinks, specifying the page size.


 ApiFuture<AsyncPage<Sink>> future = logging.listSinksAsync(ListOption.pageSize(100));
 // ...
 AsyncPage<Sink> sinks = future.get();
 Iterator<Sink> sinkIterator = sinks.iterateAll().iterator();
 while (sinkIterator.hasNext()) {
   Sink sink = sinkIterator.next();
   // do something with the sink
 }
Parameter
Name Description
options ListOption[]
Returns
Type Description
ApiFuture<AsyncPage<Sink>>

populateMetadata(Iterable<LogEntry> logEntries, MonitoredResource customResource, String[] exclusionClassPaths)

public default Iterable<LogEntry> populateMetadata(Iterable<LogEntry> logEntries, MonitoredResource customResource, String[] exclusionClassPaths)

Populates metadata fields of the immutable collection of LogEntry items. Only empty fields are populated. The SourceLocation is populated only for items with the severity set to Severity.DEBUG. The information about HttpRequest, trace and span Id is retrieved using ContextHandler.

Parameters
Name Description
logEntries Iterable<LogEntry>

an immutable collection of LogEntry items.
customResource com.google.cloud.MonitoredResource

a customized instance of the MonitoredResource. If this parameter is null then the new instance will be generated using MonitoredResourceUtil#getResource(String, String).
exclusionClassPaths String[]

a list of exclussion class path prefixes. If left empty then SourceLocation instance is built based on the caller's stack trace information. Otherwise, the information from the first StackTraceElement along the call stack which class name does not start with any not null exclusion class paths is used.
Returns
Type Description
Iterable<LogEntry>

A collection of LogEntry items composed from the logEntries parameter with populated metadata fields.

setFlushSeverity(Severity flushSeverity)

public abstract void setFlushSeverity(Severity flushSeverity)

Sets flush severity for asynchronous logging writes. It is disabled by default, enabled when this method is called with any Severity value other than Severity.NONE. Logs will be immediately written out for entries at or higher than flush severity.

Enabling this can cause the leaking and hanging threads, see BUG(2796) BUG(3880). However you can explicitly call #flush.

TODO: Enable this by default once functionality to trigger rpc is available in generated code.

Parameter
Name Description
flushSeverity Severity

setWriteSynchronicity(Synchronicity synchronicity)

public abstract void setWriteSynchronicity(Synchronicity synchronicity)

Sets synchronicity Synchronicity of logging writes, defaults to asynchronous.

Parameter
Name Description
synchronicity Synchronicity

tailLogEntries(Logging.TailOption[] options)

public abstract LogEntryServerStream tailLogEntries(Logging.TailOption[] options)

Sends a request to stream fresh log entries. The method returns a LogEntryServerStream object to iterate through the returned stream of the log entries. Use EntryListOption#bufferWindow(String)} to specify amount of time to buffer log entries at the server before being returned. entries. Use TailOption#filter(String) to filter tailed log entries.

Example of streaming log entries for a specific project.

 
 LogEntryServerStream stream = logging.tailLogEntries(TailOption.project("my_project_id"));
 Iterator<LogEntry> it = stream.iterator();
 while (it.hasNext()) {
   // do something with entry
   // call stream.cancel(); to stop streaming
 }
 }
Parameter
Name Description
options TailOption[]
Returns
Type Description
LogEntryServerStream

update(Exclusion exclusion)

public abstract Exclusion update(Exclusion exclusion)

Updates one or more properties of an existing exclusion.

Example of updating the exclusion:

 {
   @code
   String exclusionName = "my_exclusion_name";
   Exclusion exclusion = Exclusion
       .newBuilder(exclusionName, "resource.type=gcs_bucket severity
Parameter
Name Description
exclusion Exclusion
Returns
Type Description
Exclusion

the updated exclusion

update(MetricInfo metric)

public abstract Metric update(MetricInfo metric)

Updates a metric or creates one if it does not exist.

Example of updating a metric.

{ @code String metricName = "my_metric_name"; MetricInfo metricInfo = MetricInfo.newBuilder(metricName, "severity>=ERROR").setDescription("new description") .build(); Metric metric = logging.update(metricInfo); }

Parameter
Name Description
metric MetricInfo
Returns
Type Description
Metric

the created metric

update(SinkInfo sink)

public abstract Sink update(SinkInfo sink)

Updates a sink or creates one if it does not exist.

Example of updating a sink.

{ @code String sinkName = "my_sink_name"; String datasetName = "my_dataset"; SinkInfo sinkInfo = SinkInfo.newBuilder(sinkName, DatasetDestination.of(datasetName)) .setVersionFormat(SinkInfo.VersionFormat.V2).setFilter("severity>=ERROR").build(); Sink sink = logging.update(sinkInfo); }

Parameter
Name Description
sink SinkInfo
Returns
Type Description
Sink

the created sink

updateAsync(Exclusion exclusion)

public abstract ApiFuture<Exclusion> updateAsync(Exclusion exclusion)

Sends a request to change one or more properties of an existing exclusion. This method returns an ApiFuture object to consume the result. ApiFuture#get() returns the updated exclusion or null if not found.

Example of asynchronous exclusion update:

 {
   @code
   String exclusionName = "my_exclusion_name";
   Exclusion exclusion = Exclusion
       .newBuilder(exclusionName, "resource.type=gcs_bucket severity
Parameter
Name Description
exclusion Exclusion
Returns
Type Description
ApiFuture<Exclusion>

updateAsync(MetricInfo metric)

public abstract ApiFuture<Metric> updateAsync(MetricInfo metric)

Sends a request for updating a metric (or creating it, if it does not exist). This method returns a ApiFuture object to consume the result. ApiFuture#get() returns the updated/created metric or null if not found.

Example of asynchronously updating a metric.

{ @code String metricName = "my_metric_name"; MetricInfo metricInfo = MetricInfo.newBuilder(metricName, "severity>=ERROR").setDescription("new description") .build(); ApiFuture<Metric> future = logging.updateAsync(metricInfo); // ... Metric metric = future.get(); }

Parameter
Name Description
metric MetricInfo
Returns
Type Description
ApiFuture<Metric>

updateAsync(SinkInfo sink)

public abstract ApiFuture<Sink> updateAsync(SinkInfo sink)

Sends a request for updating a sink (or creating it, if it does not exist). This method returns a ApiFuture object to consume the result. ApiFuture#get() returns the updated/created sink or null if not found.

Example of asynchronously updating a sink.

{ @code String sinkName = "my_sink_name"; String datasetName = "my_dataset"; SinkInfo sinkInfo = SinkInfo.newBuilder(sinkName, DatasetDestination.of(datasetName)) .setVersionFormat(SinkInfo.VersionFormat.V2).setFilter("severity>=ERROR").build(); ApiFuture<Sink> future = logging.updateAsync(sinkInfo); // ... Sink sink = future.get(); }

Parameter
Name Description
sink SinkInfo
Returns
Type Description
ApiFuture<Sink>

write(Iterable<LogEntry> logEntries, Logging.WriteOption[] options)

public abstract void write(Iterable<LogEntry> logEntries, Logging.WriteOption[] options)

Sends a request to log entries to Cloud Logging. Use WriteOption#logName(String) to provide a log name for those entries that do not specify one. Use WriteOption#resource(MonitoredResource) to provide a monitored resource for those entries that do not specify one. Use WriteOption#labels(Map) to provide some labels to be added to every entry in logEntries.

Example of writing log entries and providing a default log name and monitored resource.


 String logName = "my_log_name";
 List<LogEntry> entries = new ArrayList<>();
 entries.add(LogEntry.of(StringPayload.of("Entry payload")));
 Map<String, Object> jsonMap = new HashMap<>();
 jsonMap.put("key", "value");
 entries.add(LogEntry.of(JsonPayload.of(jsonMap)));
 logging.write(entries, WriteOption.logName(logName),
     WriteOption.resource(MonitoredResource.newBuilder("global").build()));
Parameters
Name Description
logEntries Iterable<LogEntry>
options WriteOption[]