Examples with SimpleIteratorEnvironment org.apache.accumulo.iteratortest.environments.SimpleIteratorEnvironment used on opensource projects

Example 1 with SimpleIteratorEnvironment

use of org.apache.accumulo.iteratortest.environments.SimpleIteratorEnvironment in project accumulo by apache.

the class ReSeekTestCase method test.

@Override
public IteratorTestOutput test(IteratorTestInput testInput) {
    final SortedKeyValueIterator<Key, Value> skvi = IteratorTestUtil.instantiateIterator(testInput);
    final SortedKeyValueIterator<Key, Value> source = IteratorTestUtil.createSource(testInput);
    try {
        skvi.init(source, testInput.getIteratorOptions(), new SimpleIteratorEnvironment());
        skvi.seek(testInput.getRange(), testInput.getFamilies(), testInput.isInclusive());
        return new IteratorTestOutput(consume(skvi, testInput));
    } catch (IOException e) {
        return new IteratorTestOutput(e);
    }
}

Example 2 with SimpleIteratorEnvironment

use of org.apache.accumulo.iteratortest.environments.SimpleIteratorEnvironment in project accumulo by apache.

the class ReSeekTestCase method consume.

TreeMap<Key, Value> consume(SortedKeyValueIterator<Key, Value> skvi, IteratorTestInput testInput) throws IOException {
    final TreeMap<Key, Value> data = new TreeMap<>();
    final Range origRange = testInput.getRange();
    final Collection<ByteSequence> origFamilies = testInput.getFamilies();
    final boolean origInclusive = testInput.isInclusive();
    int reseekCount = random.nextInt(RESEEK_INTERVAL);
    int i = 0;
    while (skvi.hasTop()) {
        data.put(new Key(skvi.getTopKey()), new Value(skvi.getTopValue()));
        /*
       * One of the trickiest cases in writing iterators: After any result is returned from a TabletServer to the client, the Iterator in the TabletServer's
       * memory may be torn down. To preserve the state and guarantee that all records are received, the TabletServer does remember the last Key it returned to
       * the client. It will recreate the Iterator (stack), and seek it using an updated Range. This range's start key is set to the last Key returned,
       * non-inclusive.
       */
        if (i % RESEEK_INTERVAL == reseekCount) {
            // Last key
            Key reSeekStartKey = skvi.getTopKey();
            // Make a new instance of the iterator
            skvi = IteratorTestUtil.instantiateIterator(testInput);
            final SortedKeyValueIterator<Key, Value> sourceCopy = IteratorTestUtil.createSource(testInput);
            skvi.init(sourceCopy, testInput.getIteratorOptions(), new SimpleIteratorEnvironment());
            // The new range, resume where we left off (non-inclusive), with same families filter
            final Range newRange = new Range(reSeekStartKey, false, origRange.getEndKey(), origRange.isEndKeyInclusive());
            log.debug("Re-seeking to {}", newRange);
            // Seek there
            skvi.seek(newRange, origFamilies, origInclusive);
        } else {
            // Every other time, it's a simple call to next()
            skvi.next();
        }
        i++;
    }
    return data;
}

Example 3 with SimpleIteratorEnvironment

use of org.apache.accumulo.iteratortest.environments.SimpleIteratorEnvironment in project accumulo by apache.

the class YieldingTestCase method test.

@Override
public IteratorTestOutput test(IteratorTestInput testInput) {
    final SortedKeyValueIterator<Key, Value> skvi = IteratorTestUtil.instantiateIterator(testInput);
    final SortedKeyValueIterator<Key, Value> source = IteratorTestUtil.createSource(testInput);
    try {
        skvi.init(source, testInput.getIteratorOptions(), new SimpleIteratorEnvironment());
        YieldCallback<Key> yield = new YieldCallback<>();
        skvi.enableYielding(yield);
        skvi.seek(testInput.getRange(), testInput.getFamilies(), testInput.isInclusive());
        return new IteratorTestOutput(consume(testInput, skvi, yield));
    } catch (IOException e) {
        return new IteratorTestOutput(e);
    }
}

Example 4 with SimpleIteratorEnvironment

use of org.apache.accumulo.iteratortest.environments.SimpleIteratorEnvironment in project accumulo by apache.

the class DeepCopyTestCase method test.

@Override
public IteratorTestOutput test(IteratorTestInput testInput) {
    final SortedKeyValueIterator<Key, Value> skvi = IteratorTestUtil.instantiateIterator(testInput);
    final SortedKeyValueIterator<Key, Value> source = IteratorTestUtil.createSource(testInput);
    try {
        skvi.init(source, testInput.getIteratorOptions(), new SimpleIteratorEnvironment());
        SortedKeyValueIterator<Key, Value> copy = skvi.deepCopy(new SimpleIteratorEnvironment());
        copy.seek(testInput.getRange(), testInput.getFamilies(), testInput.isInclusive());
        return new IteratorTestOutput(consume(copy));
    } catch (IOException e) {
        return new IteratorTestOutput(e);
    }
}

Example 5 with SimpleIteratorEnvironment

use of org.apache.accumulo.iteratortest.environments.SimpleIteratorEnvironment in project accumulo by apache.

the class IsolatedDeepCopiesTestCase method test.

@Override
public IteratorTestOutput test(IteratorTestInput testInput) {
    final SortedKeyValueIterator<Key, Value> skvi = IteratorTestUtil.instantiateIterator(testInput);
    final SortedKeyValueIterator<Key, Value> source = IteratorTestUtil.createSource(testInput);
    try {
        skvi.init(source, testInput.getIteratorOptions(), new SimpleIteratorEnvironment());
        SortedKeyValueIterator<Key, Value> copy1 = skvi.deepCopy(new SimpleIteratorEnvironment());
        SortedKeyValueIterator<Key, Value> copy2 = copy1.deepCopy(new SimpleIteratorEnvironment());
        Range seekRange = testInput.getRange();
        Collection<ByteSequence> seekColumnFamilies = testInput.getFamilies();
        boolean seekInclusive = testInput.isInclusive();
        skvi.seek(testInput.getRange(), seekColumnFamilies, seekInclusive);
        copy1.seek(testInput.getRange(), seekColumnFamilies, seekInclusive);
        copy2.seek(testInput.getRange(), seekColumnFamilies, seekInclusive);
        TreeMap<Key, Value> output = consumeMany(new ArrayList<>(Arrays.asList(skvi, copy1, copy2)), seekRange, seekColumnFamilies, seekInclusive);
        return new IteratorTestOutput(output);
    } catch (IOException e) {
        return new IteratorTestOutput(e);
    }
}