Package com.linkedin.alpini.router

Class ScatterGatherRequestHandlerImpl<H,P extends ResourcePath<K>,K,R,CHC,BHS extends BasicRequest,HR,HRS extends io.netty.handler.codec.http.HttpResponseStatus,SCATTER_GATHER_HELPER extends ScatterGatherHelper<H,P,K,R,BHS,HR,HRS>>

java.lang.Object

com.linkedin.alpini.router.ScatterGatherRequestHandler<H,P,K,R>

com.linkedin.alpini.router.ScatterGatherRequestHandlerImpl<H,P,K,R,CHC,BHS,HR,HRS,SCATTER_GATHER_HELPER>

Direct Known Subclasses:

ScatterGatherRequestHandler4

public abstract class ScatterGatherRequestHandlerImpl<H,P extends ResourcePath<K>,K,R,CHC,BHS extends BasicRequest,HR,HRS extends io.netty.handler.codec.http.HttpResponseStatus,SCATTER_GATHER_HELPER extends ScatterGatherHelper<H,P,K,R,BHS,HR,HRS>>
extends ScatterGatherRequestHandler<H,P,K,R>

Field Summary

Fields inherited from class com.linkedin.alpini.router.ScatterGatherRequestHandler

_timeoutProcessor, LOG, NOP

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	ScatterGatherRequestHandlerImpl(SCATTER_GATHER_HELPER scatterGatherHelper, TimeoutProcessor timeoutProcessor)
protected	ScatterGatherRequestHandlerImpl(SCATTER_GATHER_HELPER scatterGatherHelper, RouterTimeoutProcessor timeoutProcessor)

Method Summary

Modifier and Type	Method	Description
protected void	appendError(BHS request, java.util.List<HR> responses, HRS status, java.lang.String contentMessage, java.lang.Throwable ex)
protected java.util.concurrent.CompletionStage<?>	appendErrorForEveryKey(BHS request, java.util.List<HR> responses, HRS status, java.lang.String contentMessage, java.lang.Throwable ex, ResourcePathParser<P,K> pathParser, ScatterGatherRequest<H,K> part, P basePath)
protected void	appendErrorsForOfflinePartitions(BHS request, Scatter<H,P,K> scatter, java.util.List<AsyncFuture<java.util.List<HR>>> responseFutures)
protected abstract HRS	badRequest()
protected abstract HR	buildErrorResponse(BHS request, HRS status, java.lang.String contentMessage, java.lang.Throwable ex)
protected HR	buildExceptionResponse(BHS request, java.lang.Throwable cause)
protected abstract HR	buildResponse(BHS request, Metrics metrics, java.util.List<HR> gatheredResponses)
protected void	dispatch(Scatter<H,P,K> scatter, ScatterGatherRequest<H,K> part, P path, BHS request, AsyncPromise<H> hostSelected, AsyncPromise<java.util.List<HR>> responseFuture, AsyncPromise<HRS> retryFuture, AsyncFuture<java.lang.Void> timeoutFuture, java.util.concurrent.Executor contextExecutor)
protected abstract java.util.concurrent.Executor	executor(CHC ctx)
protected abstract HRS	gatewayTimeout()
protected abstract java.lang.String	getReasonPhrase(HRS status)
protected abstract int	getResponseCode(HR response)
protected abstract Headers	getResponseHeaders(HR response)
protected abstract int	getResponseReadable(HR response)
SCATTER_GATHER_HELPER	getScatterGatherHelper()
protected AsyncFuture<HR>	handler(CHC ctx, BHS request)
protected abstract boolean	hasErrorInStorageNodeResponse(HR response)
protected void	incrementTotalRetries(ScatterGatherStats.Delta stats, HRS responseStatus)
protected void	incrementTotalRetriesError(ScatterGatherStats.Delta stats, HRS responseStatus)
protected void	incrementTotalRetriesWinner(ScatterGatherStats.Delta stats, HRS responseStatus)
protected abstract HRS	internalServerError()
protected boolean	isLastAttempt(HRS status)
protected abstract boolean	isRequestRetriable(P path, R role, HRS status)
protected abstract boolean	isServiceUnavailable(HRS status)
protected abstract boolean	isSuccessStatus(HRS status)
protected abstract boolean	isTooLongFrameException(java.lang.Throwable cause)
protected abstract HRS	multiStatus()
protected BHS	prepareRequest(BHS value)
protected AsyncFutureListener<HRS>	prepareRetry(AsyncFuture<H> hostFuture, P path, BHS requestRef, R role, AsyncPromise<java.util.List<HR>> responseFuture, AsyncFuture<java.lang.Void> timeoutFuture, java.util.concurrent.Executor contextExecutor, HostHealthMonitor<H> hostHealthMonitor, ScatterGatherStats.Delta stats, Metrics m)
protected boolean	releaseRequest(BHS value)
protected boolean	releaseResponse(HR value)
protected BHS	retainRequest(BHS value)
protected abstract HRS	serviceUnavailable()
protected abstract void	setKeepAlive(HR response, boolean keepAlive)
static void	setMetric(Metrics metric, MetricNames metricName, java.util.function.Supplier<TimeValue> supplier)
protected abstract HRS	statusOf(int code)
protected abstract java.lang.Runnable	timeout(CHC ctx, java.lang.Runnable task)
protected java.lang.Runnable	timeout(CHC ctx, java.lang.String msg, AsyncPromise<java.lang.Void> timeoutFuture)
protected <T> java.lang.Runnable	timeout(CHC ctx, java.lang.String msg, AsyncPromise<T> timeoutFuture, T value)
protected abstract HRS	tooManyRequests()
protected static java.lang.Throwable	unwrapCompletion(java.lang.Throwable ex)

Methods inherited from class com.linkedin.alpini.router.ScatterGatherRequestHandler

make, make

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ScatterGatherRequestHandlerImpl

protected ScatterGatherRequestHandlerImpl(@Nonnull
                                          SCATTER_GATHER_HELPER scatterGatherHelper,
                                          @Nonnull
                                          TimeoutProcessor timeoutProcessor)

ScatterGatherRequestHandlerImpl

protected ScatterGatherRequestHandlerImpl(@Nonnull
                                          SCATTER_GATHER_HELPER scatterGatherHelper,
                                          @Nonnull
                                          RouterTimeoutProcessor timeoutProcessor)

Method Detail

getScatterGatherHelper

@Nonnull
public final SCATTER_GATHER_HELPER getScatterGatherHelper()

Specified by:

getScatterGatherHelper in class ScatterGatherRequestHandler<H,P extends ResourcePath<K>,K,R>

setMetric

public static void setMetric(Metrics metric,
                             @Nonnull
                             MetricNames metricName,
                             @Nonnull
                             java.util.function.Supplier<TimeValue> supplier)

timeout

protected abstract java.lang.Runnable timeout(CHC ctx,
                                              java.lang.Runnable task)

timeout

protected java.lang.Runnable timeout(CHC ctx,
                                     java.lang.String msg,
                                     AsyncPromise<java.lang.Void> timeoutFuture)

timeout

protected <T> java.lang.Runnable timeout(CHC ctx,
                                         java.lang.String msg,
                                         AsyncPromise<T> timeoutFuture,
                                         T value)

executor

protected abstract java.util.concurrent.Executor executor(CHC ctx)

handler

@Nonnull
protected AsyncFuture<HR> handler(@Nonnull
                                  CHC ctx,
                                  @Nonnull
                                  BHS request)
                           throws java.lang.Exception

Throws:

java.lang.Exception

unwrapCompletion

protected static java.lang.Throwable unwrapCompletion(java.lang.Throwable ex)

statusOf

protected abstract HRS statusOf(int code)

multiStatus

protected abstract HRS multiStatus()

badRequest

protected abstract HRS badRequest()

gatewayTimeout

protected abstract HRS gatewayTimeout()

tooManyRequests

protected abstract HRS tooManyRequests()

serviceUnavailable

protected abstract HRS serviceUnavailable()

internalServerError

protected abstract HRS internalServerError()

isSuccessStatus

protected abstract boolean isSuccessStatus(HRS status)

isRequestRetriable

protected abstract boolean isRequestRetriable(P path,
                                              R role,
                                              HRS status)

isServiceUnavailable

protected abstract boolean isServiceUnavailable(HRS status)

getReasonPhrase

protected abstract java.lang.String getReasonPhrase(HRS status)

prepareRequest

@Nonnull
protected BHS prepareRequest(@Nonnull
                             BHS value)

retainRequest

@Nonnull
protected BHS retainRequest(@Nonnull
                            BHS value)

releaseRequest

protected boolean releaseRequest(BHS value)

releaseResponse

protected boolean releaseResponse(HR value)

isLastAttempt

protected boolean isLastAttempt(HRS status)

prepareRetry

@Nonnull
protected AsyncFutureListener<HRS> prepareRetry(@Nonnull
                                                AsyncFuture<H> hostFuture,
                                                @Nonnull
                                                P path,
                                                @Nonnull
                                                BHS requestRef,
                                                @Nonnull
                                                R role,
                                                @Nonnull
                                                AsyncPromise<java.util.List<HR>> responseFuture,
                                                @Nonnull
                                                AsyncFuture<java.lang.Void> timeoutFuture,
                                                @Nonnull
                                                java.util.concurrent.Executor contextExecutor,
                                                @Nonnull
                                                HostHealthMonitor<H> hostHealthMonitor,
                                                @Nonnull
                                                ScatterGatherStats.Delta stats,
                                                Metrics m)

incrementTotalRetries

protected void incrementTotalRetries(ScatterGatherStats.Delta stats,
                                     HRS responseStatus)

incrementTotalRetriesError

protected void incrementTotalRetriesError(ScatterGatherStats.Delta stats,
                                          HRS responseStatus)

incrementTotalRetriesWinner

protected void incrementTotalRetriesWinner(ScatterGatherStats.Delta stats,
                                           HRS responseStatus)

getResponseCode

protected abstract int getResponseCode(HR response)

getResponseReadable

protected abstract int getResponseReadable(HR response)

hasErrorInStorageNodeResponse

protected abstract boolean hasErrorInStorageNodeResponse(HR response)

getResponseHeaders

protected abstract Headers getResponseHeaders(HR response)

setKeepAlive

protected abstract void setKeepAlive(HR response,
                                     boolean keepAlive)

buildResponse

@Nonnull
protected abstract HR buildResponse(@Nonnull
                                    BHS request,
                                    Metrics metrics,
                                    @Nonnull
                                    java.util.List<HR> gatheredResponses)

appendErrorsForOfflinePartitions

protected void appendErrorsForOfflinePartitions(@Nonnull
                                                BHS request,
                                                @Nonnull
                                                Scatter<H,P,K> scatter,
                                                @Nonnull
                                                java.util.List<AsyncFuture<java.util.List<HR>>> responseFutures)

appendErrorForEveryKey

protected java.util.concurrent.CompletionStage<?> appendErrorForEveryKey(@Nonnull
                                                                         BHS request,
                                                                         @Nonnull
                                                                         java.util.List<HR> responses,
                                                                         @Nonnull
                                                                         HRS status,
                                                                         java.lang.String contentMessage,
                                                                         java.lang.Throwable ex,
                                                                         @Nonnull
                                                                         ResourcePathParser<P,K> pathParser,
                                                                         @Nonnull
                                                                         ScatterGatherRequest<H,K> part,
                                                                         @Nonnull
                                                                         P basePath)

appendError

protected void appendError(@Nonnull
                           BHS request,
                           @Nonnull
                           java.util.List<HR> responses,
                           @Nonnull
                           HRS status,
                           java.lang.String contentMessage,
                           java.lang.Throwable ex)

isTooLongFrameException

protected abstract boolean isTooLongFrameException(java.lang.Throwable cause)

Specified by:

isTooLongFrameException in class ScatterGatherRequestHandler<H,P extends ResourcePath<K>,K,R>

buildExceptionResponse

@Nonnull
protected HR buildExceptionResponse(@Nonnull
                                    BHS request,
                                    @Nonnull
                                    java.lang.Throwable cause)

buildErrorResponse

@Nonnull
protected abstract HR buildErrorResponse(@Nonnull
                                         BHS request,
                                         @Nonnull
                                         HRS status,
                                         java.lang.String contentMessage,
                                         java.lang.Throwable ex)

dispatch

protected final void dispatch(@Nonnull
                              Scatter<H,P,K> scatter,
                              @Nonnull
                              ScatterGatherRequest<H,K> part,
                              @Nonnull
                              P path,
                              @Nonnull
                              BHS request,
                              @Nonnull
                              AsyncPromise<H> hostSelected,
                              @Nonnull
                              AsyncPromise<java.util.List<HR>> responseFuture,
                              @Nonnull
                              AsyncPromise<HRS> retryFuture,
                              @Nonnull
                              AsyncFuture<java.lang.Void> timeoutFuture,
                              @Nonnull
                              java.util.concurrent.Executor contextExecutor)