Class HttpJsonCallContext (2.22.0)

public final class HttpJsonCallContext implements ApiCallContext

HttpJsonCallContext encapsulates context data used to make an http-json call.

HttpJsonCallContext is immutable in the sense that none of its methods modifies the HttpJsonCallContext itself or the underlying data. Methods of the form withX return copies of the object, but with one field changed. The immutability and thread safety of the arguments solely depends on the arguments themselves.

Inheritance

Object > HttpJsonCallContext

Implements

ApiCallContext

Inherited Members

Object.clone()

Object.equals(Object)

Object.finalize()

Object.getClass()

Object.hashCode()

Object.notify()

Object.notifyAll()

Object.toString()

Object.wait()

Object.wait(long)

Object.wait(long,int)

Static Methods

createDefault()

public static HttpJsonCallContext createDefault()

Returns an empty instance.

Returns

Type	Description
`HttpJsonCallContext`

of(HttpJsonChannel channel, HttpJsonCallOptions options)

public static HttpJsonCallContext of(HttpJsonChannel channel, HttpJsonCallOptions options)

Parameters

Name	Description
`channel`	`HttpJsonChannel`
`options`	`HttpJsonCallOptions`

Returns

Type	Description
`HttpJsonCallContext`

Methods

<T>getOption(ApiCallContext.Key<T> key)

public T <T>getOption(ApiCallContext.Key<T> key)

Return the api call context option set for this context.

Parameter

Name	Description
`key`	`Key<T>`

Returns

Type	Description
`T`

<T>withOption(ApiCallContext.Key<T> key, T value)

public ApiCallContext <T>withOption(ApiCallContext.Key<T> key, T value)

Return a new ApiCallContext with additional option merged into the present instance. Any existing value of the key is overwritten.

Parameters

Name	Description
`key`	`Key<T>`
`value`	`T`

Returns

Type	Description
`ApiCallContext`

equals(Object o)

public boolean equals(Object o)

Parameter

Name	Description
`o`	`Object`

Returns

Type	Description
`boolean`

Overrides

Object.equals(Object)

getCallOptions()

public HttpJsonCallOptions getCallOptions()

Returns

Type	Description
`HttpJsonCallOptions`

getChannel()

public HttpJsonChannel getChannel()

Returns

Type	Description
`HttpJsonChannel`

getCredentials()

public Credentials getCredentials()

Returns

Type	Description
`com.google.auth.Credentials`

getDeadline()

public Instant getDeadline()

Returns

Type	Description
`org.threeten.bp.Instant`

getExtraHeaders()

public Map<String,List<String>> getExtraHeaders()

Return the extra headers set for this context.

Returns

Type	Description
`Map<String,List<String>>`

getRetrySettings()

public RetrySettings getRetrySettings()

Returns the RetrySettings to use with this context, or null if the default RetrySettings should be used.

Returns

Type	Description
`RetrySettings`

getRetryableCodes()

public Set<StatusCode.Code> getRetryableCodes()

Returns the retryable codes to use with this context, or null if the default retryable codes should be used.

Returns

Type	Description
`Set<Code>`

getStreamIdleTimeout()

public Duration getStreamIdleTimeout()

The stream idle timeout set for this context. See Also: ApiCallContext#withStreamIdleTimeout(Duration)

Returns

Type	Description
`org.threeten.bp.Duration`

getStreamWaitTimeout()

public Duration getStreamWaitTimeout()

The stream wait timeout set for this context. See Also: ApiCallContext#withStreamWaitTimeout(Duration)

Returns

Type	Description
`org.threeten.bp.Duration`

getTimeout()

public Duration getTimeout()

Returns the configured per-RPC timeout.

Returns

Type	Description
`org.threeten.bp.Duration`

getTracer()

public ApiTracer getTracer()

The ApiTracer that was previously set for this context.

The ApiTracer will be used to trace the current operation and to annotate various events like retries.

Returns

Type	Description
`ApiTracer`

hashCode()

public int hashCode()

Returns

Type	Description
`int`

Overrides

Object.hashCode()

merge(ApiCallContext inputCallContext)

public HttpJsonCallContext merge(ApiCallContext inputCallContext)

For any values in inputCallContext that are not null, override the corresponding values in the present instance.

Parameter

Name	Description
`inputCallContext`	`ApiCallContext`

Returns

Type	Description
`HttpJsonCallContext`

nullToSelf(ApiCallContext inputContext)

public HttpJsonCallContext nullToSelf(ApiCallContext inputContext)

Returns inputContext cast to HttpJsonCallContext, or an empty HttpJsonCallContext if inputContext is null.

Parameter

Name	Description
`inputContext`	`ApiCallContext` the ApiCallContext to cast if it is not null

Returns

Type	Description
`HttpJsonCallContext`

withCallOptions(HttpJsonCallOptions newCallOptions)

public HttpJsonCallContext withCallOptions(HttpJsonCallOptions newCallOptions)

Parameter

Name	Description
`newCallOptions`	`HttpJsonCallOptions`

Returns

Type	Description
`HttpJsonCallContext`

withChannel(HttpJsonChannel newChannel)

public HttpJsonCallContext withChannel(HttpJsonChannel newChannel)

Parameter

Name	Description
`newChannel`	`HttpJsonChannel`

Returns

Type	Description
`HttpJsonCallContext`

withCredentials(Credentials newCredentials)

public HttpJsonCallContext withCredentials(Credentials newCredentials)

Returns a new ApiCallContext with the given credentials set.

Parameter

Name	Description
`newCredentials`	`com.google.auth.Credentials`

Returns

Type	Description
`HttpJsonCallContext`

withDeadline(Instant newDeadline)

public HttpJsonCallContext withDeadline(Instant newDeadline)

Parameter

Name	Description
`newDeadline`	`org.threeten.bp.Instant`

Returns

Type	Description
`HttpJsonCallContext`

withExtraHeaders(Map<String,List<String>> extraHeaders)

public ApiCallContext withExtraHeaders(Map<String,List<String>> extraHeaders)

Return a new ApiCallContext with the extraHeaders merged into the present instance.

Parameter

Name	Description
`extraHeaders`	`Map<String,List<String>>`

Returns

Type	Description
`ApiCallContext`

withRetrySettings(RetrySettings retrySettings)

public HttpJsonCallContext withRetrySettings(RetrySettings retrySettings)

Returns a new ApiCallContext with the given RetrySettings set.

This sets the RetrySettings to use for the RPC. These settings will work in combination with either the default retryable codes for the RPC, or the retryable codes supplied through #withRetryableCodes(Set). Calling #withRetrySettings(RetrySettings) on an RPC that does not include Code#DEADLINE_EXCEEDED as one of its retryable codes (or without calling #withRetryableCodes(Set) with a set that includes at least Code#DEADLINE_EXCEEDED) will effectively only set a single timeout that is equal to RetrySettings#getInitialRpcTimeout(). If this timeout is exceeded, the RPC will not be retried and will fail with Code#DEADLINE_EXCEEDED.

Example usage:


 ApiCallContext context = GrpcCallContext.createDefault()
   .withRetrySettings(RetrySettings.newBuilder()
     .setInitialRetryDelay(Duration.ofMillis(10L))
     .setInitialRpcTimeout(Duration.ofMillis(100L))
     .setMaxAttempts(10)
     .setMaxRetryDelay(Duration.ofSeconds(10L))
     .setMaxRpcTimeout(Duration.ofSeconds(30L))
     .setRetryDelayMultiplier(1.4)
     .setRpcTimeoutMultiplier(1.5)
     .setTotalTimeout(Duration.ofMinutes(10L))
     .build())
   .withRetryableCodes(Sets.newSet(
     StatusCode.Code.UNAVAILABLE,
     StatusCode.Code.DEADLINE_EXCEEDED));

Setting a logical call timeout for the context can be done similarly with RetrySettings.Builder#setLogicalTimeout(Duration timeout).

Example usage:


 ApiCallContext context = GrpcCallContext.createDefault()
   .withRetrySettings(RetrySettings.newBuilder()
     .setInitialRetryDelay(Duration.ofMillis(10L))
     .setMaxRetryDelay(Duration.ofSeconds(10L))
     .setRetryDelayMultiplier(1.4)
     .setMaxAttempts(10)
     .setLogicalTimeout(Duration.ofSeconds(30L))
     .build());

Parameter

Name	Description
`retrySettings`	`RetrySettings`

Returns

Type	Description
`HttpJsonCallContext`

withRetryableCodes(Set<StatusCode.Code> retryableCodes)

public HttpJsonCallContext withRetryableCodes(Set<StatusCode.Code> retryableCodes)

Returns a new ApiCallContext with the given retryable codes set.

This sets the retryable codes to use for the RPC. These settings will work in combination with either the default RetrySettings for the RPC, or the RetrySettings supplied through #withRetrySettings(RetrySettings).

Setting a non-empty set of retryable codes for an RPC that is not already retryable by default, will not have any effect and the RPC will NOT be retried. This option can only be used to change which codes are considered retryable for an RPC that already has at least one retryable code in its default settings.

Parameter

Name	Description
`retryableCodes`	`Set<Code>`

Returns

Type	Description
`HttpJsonCallContext`

withStreamIdleTimeout(Duration streamIdleTimeout)

public HttpJsonCallContext withStreamIdleTimeout(Duration streamIdleTimeout)

Returns a new ApiCallContext with the given stream idle timeout set.

This timeout only applies to a ServerStreamingCallables. It limits the maximum amount of timeout that can pass between a message being received by ResponseObserver#onResponse(Object) and demand being signaled via StreamController#request(int). Please note that this timeout is best effort and the maximum resolution configured in StubSettings#getStreamWatchdogCheckInterval(). This is useful to clean up streams that were partially read but never closed. When the timeout has been reached, the stream will be closed with a nonretryable WatchdogTimeoutException and a status of StatusCode.Code#ABORTED.

A value of Duration#ZERO, disables the streaming idle timeout and a null value will use the default in the callable.

Please note that this timeout is best effort and the maximum resolution is configured in StubSettings#getStreamWatchdogCheckInterval().

Parameter

Name	Description
`streamIdleTimeout`	`org.threeten.bp.Duration`

Returns

Type	Description
`HttpJsonCallContext`

withStreamWaitTimeout(Duration streamWaitTimeout)

public HttpJsonCallContext withStreamWaitTimeout(Duration streamWaitTimeout)

Returns a new ApiCallContext with the given stream timeout set.

This timeout only applies to a ServerStreamingCallables. It limits the maximum amount of time that can pass between demand being signaled via StreamController#request(int) and actual message delivery to ResponseObserver#onResponse(Object). Or, in the case of automatic flow control, since the last message was delivered to ResponseObserver#onResponse(Object). This is useful to detect server or connection stalls. When the timeout has been reached, the stream will be closed with a retryable WatchdogTimeoutException and a status of StatusCode.Code#ABORTED.

A value of Duration#ZERO, disables the streaming wait timeout and a null value will use the default in the callable.

Please note that this timeout is best effort and the maximum resolution is configured in StubSettings#getStreamWatchdogCheckInterval().

Parameter

Name	Description
`streamWaitTimeout`	`org.threeten.bp.Duration`

Returns

Type	Description
`HttpJsonCallContext`

withTimeout(Duration timeout)

public HttpJsonCallContext withTimeout(Duration timeout)

Returns a new ApiCallContext with the given timeout set.

This sets the maximum amount of time a single unary RPC attempt can take. If retries are enabled, then this can take much longer, as each RPC attempt will have the same constant timeout. Unlike a deadline, timeouts are relative durations that are measure from the beginning of each RPC attempt. Please note that this limits the duration of a server streaming RPC as well.

If a method has default com.google.api.gax.retrying.RetrySettings, the max attempts and/or total timeout is still respected when scheduling each RPC attempt.

Parameter

Name	Description
`timeout`	`org.threeten.bp.Duration`

Returns

Type	Description
`HttpJsonCallContext`

withTracer(ApiTracer newTracer)

public HttpJsonCallContext withTracer(ApiTracer newTracer)

Returns a new ApiCallContext with the given ApiTracer.

The ApiTracer will be used to trace the current operation and to annotate various events like retries.

Parameter

Name	Description
`newTracer`	`ApiTracer`

Returns

Type	Description
`HttpJsonCallContext`

withTransportChannel(TransportChannel inputChannel)

public HttpJsonCallContext withTransportChannel(TransportChannel inputChannel)

Returns a new ApiCallContext with the given channel set.

Parameter

Name	Description
`inputChannel`	`TransportChannel`

Returns

Type	Description
`HttpJsonCallContext`