java.lang.Object
- io.grpc.internal.TransportTracer

```
public final class TransportTracer
extends java.lang.Object
```
A class for gathering statistics about a transport. This is an experimental feature. Can only be called from the transport thread unless otherwise noted.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`static class`	`TransportTracer.Factory`
`static interface`	`TransportTracer.FlowControlReader`	An interface for reading the local and remote flow control windows of the transport.
`static class`	`TransportTracer.FlowControlWindows`	A container that holds the local and remote flow control window sizes.

Field Summary

Fields
Modifier and Type	Field	Description
`private static TransportTracer.Factory`	`DEFAULT_FACTORY`
`private TransportTracer.FlowControlReader`	`flowControlWindowReader`
`private long`	`keepAlivesSent`
`private long`	`lastLocalStreamCreatedTimeNanos`
`private long`	`lastMessageReceivedTimeNanos`
`private long`	`lastMessageSentTimeNanos`
`private long`	`lastRemoteStreamCreatedTimeNanos`
`private LongCounter`	`messagesReceived`
`private long`	`messagesSent`
`private long`	`streamsFailed`
`private long`	`streamsStarted`
`private long`	`streamsSucceeded`
`private TimeProvider`	`timeProvider`

Constructor Summary

Constructors
Modifier Constructor Description

TransportTracer()

private TransportTracer(TimeProvider timeProvider)

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static TransportTracer.Factory`	`getDefaultFactory()`
`InternalChannelz.TransportStats`	`getStats()`	Returns a read only set of current stats.
`void`	`reportKeepAliveSent()`	Reports that a keep alive message was sent.
`void`	`reportLocalStreamStarted()`	Called by the client to report a stream has started.
`void`	`reportMessageReceived()`	Reports that a message was successfully received.
`void`	`reportMessageSent(int numMessages)`	Reports that some messages were successfully sent.
`void`	`reportRemoteStreamStarted()`	Called by the server to report a stream has started.
`void`	`reportStreamClosed(boolean success)`	Reports that a stream closed with the specified Status.
`void`	`setFlowControlWindowReader(TransportTracer.FlowControlReader flowControlWindowReader)`	Registers a `TransportTracer.FlowControlReader` that can be used to read the local and remote flow control window sizes.

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

Field Detail

DEFAULT_FACTORY

private static final TransportTracer.Factory DEFAULT_FACTORY

timeProvider

private final TimeProvider timeProvider

streamsStarted
```
private long streamsStarted
```

lastLocalStreamCreatedTimeNanos

private long lastLocalStreamCreatedTimeNanos

lastRemoteStreamCreatedTimeNanos

private long lastRemoteStreamCreatedTimeNanos

streamsSucceeded
```
private long streamsSucceeded
```

streamsFailed
```
private long streamsFailed
```

keepAlivesSent
```
private long keepAlivesSent
```

flowControlWindowReader

private TransportTracer.FlowControlReader flowControlWindowReader

messagesSent
```
private long messagesSent
```

lastMessageSentTimeNanos
```
private long lastMessageSentTimeNanos
```

messagesReceived

private final LongCounter messagesReceived

lastMessageReceivedTimeNanos

private volatile long lastMessageReceivedTimeNanos

Constructor Detail

TransportTracer
```
public TransportTracer()
```

TransportTracer

private TransportTracer(TimeProvider timeProvider)

Method Detail
- getStats
```
public InternalChannelz.TransportStats getStats()
```
  Returns a read only set of current stats.
- reportLocalStreamStarted
```
public void reportLocalStreamStarted()
```
  Called by the client to report a stream has started.
- reportRemoteStreamStarted
```
public void reportRemoteStreamStarted()
```
  Called by the server to report a stream has started.
- reportStreamClosed
```
public void reportStreamClosed(boolean success)
```
  Reports that a stream closed with the specified Status.
- reportMessageSent
```
public void reportMessageSent(int numMessages)
```
  Reports that some messages were successfully sent. numMessages must be at least 0.
- reportMessageReceived
```
public void reportMessageReceived()
```
  Reports that a message was successfully received. This method is thread safe.
- reportKeepAliveSent
```
public void reportKeepAliveSent()
```
  Reports that a keep alive message was sent.
- setFlowControlWindowReader
```
public void setFlowControlWindowReader(TransportTracer.FlowControlReader flowControlWindowReader)
```
  Registers a TransportTracer.FlowControlReader that can be used to read the local and remote flow control window sizes.
- getDefaultFactory
```
public static TransportTracer.Factory getDefaultFactory()
```

Modifier	Constructor	Description
	`TransportTracer()`
`private`	`TransportTracer(TimeProvider timeProvider)`

Class TransportTracer

Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

DEFAULT_FACTORY

timeProvider

streamsStarted

lastLocalStreamCreatedTimeNanos

lastRemoteStreamCreatedTimeNanos

streamsSucceeded

streamsFailed

keepAlivesSent

flowControlWindowReader

messagesSent

lastMessageSentTimeNanos

messagesReceived

lastMessageReceivedTimeNanos

Constructor Detail

TransportTracer

TransportTracer

Method Detail

getStats

reportLocalStreamStarted

reportRemoteStreamStarted

reportStreamClosed

reportMessageSent

reportMessageReceived

reportKeepAliveSent

setFlowControlWindowReader

getDefaultFactory