Examples with HeaderSeeker org.openstreetmap.osmosis.pbf2.v0_6.impl.HeaderSeeker used on opensource projects

Example 1 with HeaderSeeker

use of org.openstreetmap.osmosis.pbf2.v0_6.impl.HeaderSeeker in project osmosis by openstreetmap.

the class PbfReader method run.

@Override
public void run() {
    StreamSplitter streamSplitter = null;
    ExecutorService executorService;
    if (workers > 0) {
        executorService = Executors.newFixedThreadPool(workers);
    } else {
        executorService = MoreExecutors.newDirectExecutorService();
    }
    try {
        InputStream inputStream = supplier.get();
        // Create a stream splitter to break the PBF stream into blobs.
        streamSplitter = new StreamSplitter(new DataInputStream(inputStream));
        // Obtain the header block.
        Osmformat.HeaderBlock header = new HeaderSeeker().apply(streamSplitter);
        // Get the pipeline metadata (e.g. do ways include location information) from header.
        Map<String, Object> metadata = new HeaderMetadataReader().apply(header);
        sink.initialize(metadata);
        // Get Bound information from the header.
        BoundContainer bound = new HeaderBoundReader().apply(header);
        sink.process(bound);
        // Process all blobs of data in the stream using threads from the
        // executor service. We allow the decoder to issue an extra blob
        // than there are workers to ensure there is another blob
        // immediately ready for processing when a worker thread completes.
        // The main thread is responsible for splitting blobs from the
        // request stream, and sending decoded entities to the sink.
        PbfDecoder pbfDecoder = new PbfDecoder(streamSplitter, executorService, workers + 1, sink);
        pbfDecoder.run();
        sink.complete();
    } finally {
        sink.close();
        executorService.shutdownNow();
        if (streamSplitter != null) {
            streamSplitter.close();
        }
    }
}