Package com.bazaarvoice.ostrich

Examples of com.bazaarvoice.ostrich.ServiceEndPoint

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                throw (lastException == null)
                        ? new OnlyBadHostsException()
                        : new OnlyBadHostsException(lastException);
            }

            ServiceEndPoint endPoint = chooseEndPoint(validEndPoints, partitionContext);
            if (endPoint == null) {
                throw (lastException == null)
                        ? new NoSuitableHostsException()
                        : new NoSuitableHostsException(lastException);
            }

            try {
                R result = executeOnEndPoint(endPoint, callback);
                _numExecuteSuccesses.mark();
                return result;
            } catch (Exception e) {
                _numExecuteAttemptFailures.mark();

                // Don't retry if exception is too severe.
                if (!isRetriableException(e)) {
                    throw Throwables.propagate(e);
                }

                LOG.info("Retriable exception from end point id: {}, {}", endPoint.getId(), e.toString());
                LOG.debug("Exception", e);
                lastException = e;
            }
        } while (retry.allowRetry(++numAttempts, sw.elapsedMillis()));
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        if (endPoints == null || Iterables.isEmpty(endPoints)) {
            return null;
        }

        ServiceEndPoint endPoint = _loadBalanceAlgorithm.choose(endPoints, _servicePoolStatistics);
        if (endPoint == null) {
            return null;
        }

        return endPoint;
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        }

        Set<ServiceEndPoint> endPoints = Sets.newHashSet(validEndPoints);
        while (!endPoints.isEmpty()) {
            // Prefer end points in the order the load balancer recommends.
            ServiceEndPoint endPoint = chooseEndPoint(endPoints, PartitionContextBuilder.empty());
            if (endPoint == null) {
                // Load balancer didn't like our end points, so just go sequentially.
                endPoint = endPoints.iterator().next();
            }

            HealthCheckResult result = checkHealth(endPoint);
            aggregate.addHealthCheckResult(result);

            if (!result.isHealthy()) {
                Exception exception = ((FailedHealthCheckResult) result).getException();
                if (exception == null || isRetriableException(exception)) {
                    LOG.debug("Unhealthy end point discovered. End point ID: {}", endPoint.getId());
                    endPoints.remove(endPoint);
                    markEndPointAsBad(endPoint);
                    continue;
                }
            }
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     */
    public void checkIn(ServiceHandle<S> handle) throws Exception {
        checkNotNull(handle);

        S service = handle.getService();
        ServiceEndPoint endPoint = handle.getEndPoint();

        // Figure out if we should check this revision in.  If it was created before the last known invalid revision
        // for this particular end point, or the cache is closed, then we shouldn't check it in.
        Long invalidRevision = _invalidRevisions.get(endPoint);
        Long serviceRevision = _checkedOutRevisions.remove(handle);
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        Stopwatch sw = new Stopwatch(_ticker).start();
        int numAttempts = 0;
        Exception lastException;

        do {
            ServiceEndPoint endPoint = chooseEndPoint(getValidEndPoints(), partitionContext);

            try {
                R result = executeOnEndPoint(endPoint, callback);
                _numExecuteSuccesses.mark();
                return result;
            } catch (Exception e) {
                _numExecuteAttemptFailures.mark();

                // Don't retry if exception is too severe.
                if (!isRetriableException(e)) {
                    throw Throwables.propagate(e);
                }

                LOG.info("Retriable exception from end point id: " + endPoint.getId(), e);
                lastException = e;
            }
        } while (retry.allowRetry(++numAttempts, sw.elapsedMillis()));

        throw new MaxRetriesException(lastException);
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    private ServiceEndPoint chooseEndPoint(Iterable<ServiceEndPoint> endPoints, PartitionContext partitionContext) {
        endPoints = _partitionFilter.filter(endPoints, partitionContext);
        if (endPoints == null || Iterables.isEmpty(endPoints)) {
            throw new NoSuitableHostsException();
        }
        ServiceEndPoint endPoint = _loadBalanceAlgorithm.choose(endPoints, _servicePoolStatistics);
        if (endPoint == null) {
            throw new NoSuitableHostsException();
        }
        return endPoint;
    }
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            // No valid end points means no healthy end points.
            return aggregate;
        }

        while (!endPoints.isEmpty()) {
            ServiceEndPoint endPoint;
            try {
                // Prefer end points in the order the load balancer recommends.
                endPoint = chooseEndPoint(endPoints, PartitionContextBuilder.empty());
            } catch (Exception e) {
                // Load balancer didn't like our end points, so just go sequentially.
                endPoint = endPoints.iterator().next();
            }

            HealthCheckResult result = checkHealth(endPoint);
            aggregate.addHealthCheckResult(result);

            if (!result.isHealthy()) {
                Exception exception = ((FailedHealthCheckResult) result).getException();
                if (exception == null || isRetriableException(exception)) {
                    LOG.debug("Unhealthy end point discovered. End point ID: " + endPoint.getId());
                    endPoints.remove(endPoint);
                    markEndPointAsBad(endPoint);
                    continue;
                }
            }
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        URI adminUri = UriBuilder.fromPath("").scheme("http").host(ip).port(adminPort).build();
        Map<String, ?> payload = ImmutableMap.of(
                "url", serviceUri,
                "adminUrl", adminUri,
                "partition", config.getWordRange());
        final ServiceEndPoint endPoint = new ServiceEndPointBuilder()
                .withServiceName(env.getName())
                .withId(host + ":" + port)
                .withPayload(getJson(env).writeValueAsString(payload))
                .build();
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                throw (lastException == null)
                        ? new OnlyBadHostsException()
                        : new OnlyBadHostsException(lastException);
            }

            ServiceEndPoint endPoint = chooseEndPoint(validEndPoints, partitionContext);
            if (endPoint == null) {
                throw (lastException == null)
                        ? new NoSuitableHostsException()
                        : new NoSuitableHostsException(lastException);
            }

            try {
                R result = executeOnEndPoint(endPoint, callback);
                _numExecuteSuccesses.mark();
                return result;
            } catch (Exception e) {
                _numExecuteAttemptFailures.mark();

                // Don't retry if exception is too severe.
                if (!isRetriableException(e)) {
                    throw Throwables.propagate(e);
                }

                LOG.info("Retriable exception from end point id: {}, {}", endPoint.getId(), e.toString());
                LOG.debug("Exception", e);
                lastException = e;
            }
        } while (retry.allowRetry(++numAttempts, sw.elapsed(TimeUnit.MILLISECONDS)));
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        if (endPoints == null || Iterables.isEmpty(endPoints)) {
            return null;
        }

        ServiceEndPoint endPoint = _loadBalanceAlgorithm.choose(endPoints, _servicePoolStatistics);
        if (endPoint == null) {
            return null;
        }

        return endPoint;
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Related Classes of com.bazaarvoice.ostrich.ServiceEndPoint

  • com.bazaarvoice.ostrich.examples.calculator.service.CalculatorService
  • com.bazaarvoice.ostrich.examples.dictionary.service.DictionaryService
  • com.bazaarvoice.ostrich.partition.ConsistentHashPartitionFilter
  • com.bazaarvoice.ostrich.pool.ServiceCache
  • com.bazaarvoice.ostrich.pool.ServicePool
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