Method open

gpcontrib/gpcloud/src/s3key_reader.cpp:184–211

}

void S3KeyReader::open(const S3Params& params) {
    S3_CHECK_OR_DIE(this->s3Interface != NULL, S3RuntimeError, "s3Interface must not be NULL");

    this->sharedError = false;

    this->numOfChunks = params.getNumOfChunks();
    S3_CHECK_OR_DIE(this->numOfChunks > 0, S3RuntimeError, "numOfChunks must not be zero");

    this->offsetMgr.setKeySize(params.getKeySize());
    this->offsetMgr.setChunkSize(params.getChunkSize());

    S3_CHECK_OR_DIE(params.getChunkSize() > 0, S3RuntimeError,
                    "chunk size must be greater than zero");

    this->chunkBuffers.reserve(this->numOfChunks);

    for (uint64_t i = 0; i < this->numOfChunks; i++) {
        this->chunkBuffers.emplace_back(params.getS3Url(), *this, params.getMemoryContext());
    }

    for (uint64_t i = 0; i < this->numOfChunks; i++) {
        this->chunkBuffers[i].setS3InterfaceService(this->s3Interface);

        pthread_t thread;
        pthread_create(&thread, NULL, DownloadThreadFunc, &this->chunkBuffers[i]);
        this->threads.push_back(thread);
    }
}

uint64_t S3KeyReader::read(char* buf, uint64_t count) {
    uint64_t fileLen = this->offsetMgr.getKeySize();