Examples with ListRetryCallable com.alipay.sofa.jraft.rhea.client.failover.ListRetryCallable used on opensource projects

Example 1 with ListRetryCallable

use of com.alipay.sofa.jraft.rhea.client.failover.ListRetryCallable in project sofa-jraft by sofastack.

the class DefaultRheaKVStore method internalScan.

private FutureGroup<List<KVEntry>> internalScan(final byte[] startKey, final byte[] endKey, final boolean readOnlySafe, final boolean returnValue, final int retriesLeft, final Throwable lastCause) {
    Requires.requireNonNull(startKey, "startKey");
    final List<Region> regionList = this.pdClient.findRegionsByKeyRange(startKey, endKey, ApiExceptionHelper.isInvalidEpoch(lastCause));
    final List<CompletableFuture<List<KVEntry>>> futures = Lists.newArrayListWithCapacity(regionList.size());
    final Errors lastError = lastCause == null ? null : Errors.forException(lastCause);
    for (final Region region : regionList) {
        final byte[] regionStartKey = region.getStartKey();
        final byte[] regionEndKey = region.getEndKey();
        final byte[] subStartKey = regionStartKey == null ? startKey : BytesUtil.max(regionStartKey, startKey);
        final byte[] subEndKey = regionEndKey == null ? endKey : (endKey == null ? regionEndKey : BytesUtil.min(regionEndKey, endKey));
        final ListRetryCallable<KVEntry> retryCallable = retryCause -> internalScan(subStartKey, subEndKey, readOnlySafe, returnValue, retriesLeft - 1, retryCause);
        final ListFailoverFuture<KVEntry> future = new ListFailoverFuture<>(retriesLeft, retryCallable);
        internalRegionScan(region, subStartKey, subEndKey, false, readOnlySafe, returnValue, future, retriesLeft, lastError, this.onlyLeaderRead);
        futures.add(future);
    }
    return new FutureGroup<>(futures);
}

Example 2 with ListRetryCallable

use of com.alipay.sofa.jraft.rhea.client.failover.ListRetryCallable in project sofa-jraft by sofastack.

the class DefaultRheaKVStore method internalReverseScan.

private FutureGroup<List<KVEntry>> internalReverseScan(final byte[] startKey, final byte[] endKey, final boolean readOnlySafe, final boolean returnValue, final int retriesLeft, final Throwable lastCause) {
    Requires.requireNonNull(endKey, "endKey");
    final List<Region> regionList = this.pdClient.findRegionsByKeyRange(endKey, startKey, ApiExceptionHelper.isInvalidEpoch(lastCause));
    Collections.reverse(regionList);
    final List<CompletableFuture<List<KVEntry>>> futures = Lists.newArrayListWithCapacity(regionList.size());
    final Errors lastError = lastCause == null ? null : Errors.forException(lastCause);
    for (final Region region : regionList) {
        final byte[] regionEndKey = region.getEndKey();
        final byte[] regionStartKey = region.getStartKey();
        final byte[] subStartKey = regionEndKey == null ? startKey : (startKey == null ? regionEndKey : BytesUtil.min(regionEndKey, startKey));
        final byte[] subEndKey = regionStartKey == null ? endKey : BytesUtil.max(regionStartKey, endKey);
        final ListRetryCallable<KVEntry> retryCallable = retryCause -> internalReverseScan(subStartKey, subEndKey, readOnlySafe, returnValue, retriesLeft - 1, retryCause);
        final ListFailoverFuture<KVEntry> future = new ListFailoverFuture<>(retriesLeft, retryCallable);
        internalRegionScan(region, subStartKey, subEndKey, true, readOnlySafe, returnValue, future, retriesLeft, lastError, this.onlyLeaderRead);
        futures.add(future);
    }
    return new FutureGroup<>(futures);
}

Example 3 with ListRetryCallable

use of com.alipay.sofa.jraft.rhea.client.failover.ListRetryCallable in project sofa-jraft by sofastack.

the class ListFailoverFutureTest method scan.

private FutureGroup<List<Integer>> scan(final int start, final int end, final int retriesLeft, final Throwable lastCause) {
    final Errors lastError = lastCause == null ? null : Errors.forException(lastCause);
    final List<CompletableFuture<List<Integer>>> futureList = Lists.newArrayList();
    final int mid = ((end - start) / 2) + start;
    for (int i = 0; i < 2; i++) {
        final int subStart = i == 0 ? start : mid;
        final int subEnd = i == 0 ? mid : end;
        if (subEnd - subStart > 0) {
            final ListRetryCallable<Integer> retryCallable = retryCause -> scan(subStart, subEnd, retriesLeft - 1, retryCause);
            final ListFailoverFuture<Integer> future = new ListFailoverFuture<>(retriesLeft, retryCallable);
            regionScan(subStart, subEnd, future, retriesLeft, lastError);
            futureList.add(future);
        }
    }
    return new FutureGroup<>(futureList);
}