Examples with ScanRequest com.alipay.sofa.jraft.rhea.cmd.store.ScanRequest used on opensource projects

Example 1 with ScanRequest

use of com.alipay.sofa.jraft.rhea.cmd.store.ScanRequest in project sofa-jraft by sofastack.

the class DefaultRheaKVStore method internalSingleRegionScan.

private void internalSingleRegionScan(final byte[] startKey, final byte[] endKey, final int limit, final boolean readOnlySafe, final boolean returnValue, final CompletableFuture<List<KVEntry>> future, final int retriesLeft, final Errors lastCause, final boolean requireLeader) {
    Requires.requireNonNull(startKey, "startKey");
    final Region region = this.pdClient.findRegionByKey(startKey, ErrorsHelper.isInvalidEpoch(lastCause));
    final byte[] regionEndKey = region.getEndKey();
    final byte[] realEndKey = regionEndKey == null ? endKey : (endKey == null ? regionEndKey : BytesUtil.min(regionEndKey, endKey));
    final RegionEngine regionEngine = getRegionEngine(region.getId(), requireLeader);
    // require leader on retry
    final RetryRunner retryRunner = retryCause -> internalSingleRegionScan(startKey, endKey, limit, readOnlySafe, returnValue, future, retriesLeft - 1, retryCause, true);
    final FailoverClosure<List<KVEntry>> closure = new FailoverClosureImpl<>(future, retriesLeft, retryRunner);
    if (regionEngine != null) {
        if (ensureOnValidEpoch(region, regionEngine, closure)) {
            getRawKVStore(regionEngine).scan(startKey, realEndKey, limit, readOnlySafe, returnValue, closure);
        }
    } else {
        final ScanRequest request = new ScanRequest();
        request.setStartKey(startKey);
        request.setEndKey(realEndKey);
        request.setLimit(limit);
        request.setReadOnlySafe(readOnlySafe);
        request.setReturnValue(returnValue);
        request.setRegionId(region.getId());
        request.setRegionEpoch(region.getRegionEpoch());
        this.rheaKVRpcService.callAsyncWithRpc(request, closure, lastCause, requireLeader);
    }
}

Example 2 with ScanRequest

use of com.alipay.sofa.jraft.rhea.cmd.store.ScanRequest in project sofa-jraft by sofastack.

the class DefaultRheaKVStore method internalRegionScan.

private void internalRegionScan(final Region region, final byte[] subStartKey, final byte[] subEndKey, final boolean reverse, final boolean readOnlySafe, final boolean returnValue, final CompletableFuture<List<KVEntry>> future, final int retriesLeft, final Errors lastCause, final boolean requireLeader) {
    final RegionEngine regionEngine = getRegionEngine(region.getId(), requireLeader);
    // require leader on retry
    final RetryRunner retryRunner = retryCause -> internalRegionScan(region, subStartKey, subEndKey, reverse, readOnlySafe, returnValue, future, retriesLeft - 1, retryCause, true);
    final FailoverClosure<List<KVEntry>> closure = new FailoverClosureImpl<>(future, false, retriesLeft, retryRunner);
    if (regionEngine != null) {
        if (ensureOnValidEpoch(region, regionEngine, closure)) {
            final RawKVStore rawKVStore = getRawKVStore(regionEngine);
            if (reverse) {
                if (this.kvDispatcher == null) {
                    rawKVStore.reverseScan(subStartKey, subEndKey, readOnlySafe, returnValue, closure);
                } else {
                    this.kvDispatcher.execute(() -> rawKVStore.reverseScan(subStartKey, subEndKey, readOnlySafe, returnValue, closure));
                }
            } else {
                if (this.kvDispatcher == null) {
                    rawKVStore.scan(subStartKey, subEndKey, readOnlySafe, returnValue, closure);
                } else {
                    this.kvDispatcher.execute(() -> rawKVStore.scan(subStartKey, subEndKey, readOnlySafe, returnValue, closure));
                }
            }
        }
    } else {
        final ScanRequest request = new ScanRequest();
        request.setStartKey(subStartKey);
        request.setEndKey(subEndKey);
        request.setReadOnlySafe(readOnlySafe);
        request.setReturnValue(returnValue);
        request.setRegionId(region.getId());
        request.setRegionEpoch(region.getRegionEpoch());
        request.setReverse(reverse);
        this.rheaKVRpcService.callAsyncWithRpc(request, closure, lastCause, requireLeader);
    }
}