public static Collection split()

in flink-connector-mongodb/src/main/java/org/apache/flink/connector/mongodb/source/enumerator/splitter/MongoSplitters.java [45:73]

• 27 lines of code
• 8 McCabe index (conditional complexity)

    public static Collection<MongoScanSourceSplit> split(
            MongoClient mongoClient, MongoReadOptions readOptions, MongoNamespace namespace) {
        BsonDocument collStats;
        try {
            collStats = MongoUtils.collStats(mongoClient, namespace);
        } catch (MongoException e) {
            LOG.error("Execute collStats command failed, with error message: {}", e.getMessage());
            throw new FlinkRuntimeException(e);
        }

        MongoSplitContext splitContext =
                MongoSplitContext.of(readOptions, mongoClient, namespace, collStats);

        switch (readOptions.getPartitionStrategy()) {
            case SINGLE:
                return MongoSingleSplitter.split(splitContext);
            case SAMPLE:
                return MongoSampleSplitter.split(splitContext);
            case SPLIT_VECTOR:
                return MongoSplitVectorSplitter.split(splitContext);
            case SHARDED:
                return MongoShardedSplitter.split(splitContext);
            case DEFAULT:
            default:
                return splitContext.isSharded()
                        ? MongoShardedSplitter.split(splitContext)
                        : MongoSplitVectorSplitter.split(splitContext);
        }
    }