108 lines
2.7 KiB
C++
108 lines
2.7 KiB
C++
#include "blockstore.h"
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blockstore::blockstore(spp::sparse_hash_map<std::string, std::string> & config, ring_loop_t *ringloop)
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{
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this->ringloop = ringloop;
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ring_consumer.handle_event = [this](ring_data_t *d) { handle_event(d); };
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ring_consumer.loop = [this]() { loop(); };
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ringloop->register_consumer(ring_consumer);
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initialized = 0;
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block_order = stoull(config["block_size_order"]);
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block_size = 1 << block_order;
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if (block_size <= 1 || block_size >= MAX_BLOCK_SIZE)
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{
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throw new std::runtime_error("Bad block size");
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}
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data_fd = meta_fd = journal_fd = -1;
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try
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{
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open_data(config);
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open_meta(config);
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open_journal(config);
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calc_lengths(config);
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data_alloc = allocator_create(block_count);
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if (!data_alloc)
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throw new std::bad_alloc();
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}
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catch (std::exception & e)
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{
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if (data_fd >= 0)
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close(data_fd);
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if (meta_fd >= 0 && meta_fd != data_fd)
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close(meta_fd);
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if (journal_fd >= 0 && journal_fd != meta_fd)
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close(journal_fd);
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throw e;
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}
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}
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blockstore::~blockstore()
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{
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ringloop->unregister_consumer(ring_consumer.number);
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if (data_fd >= 0)
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close(data_fd);
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if (meta_fd >= 0 && meta_fd != data_fd)
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close(meta_fd);
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if (journal_fd >= 0 && journal_fd != meta_fd)
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close(journal_fd);
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}
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// main event loop - handle requests
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void blockstore::handle_event(ring_data_t *data)
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{
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if (initialized != 0)
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{
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if (metadata_init_reader)
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{
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metadata_init_reader->handle_event(data);
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}
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else if (journal_init_reader)
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{
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journal_init_reader->handle_event(data);
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}
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}
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else
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{
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}
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}
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// main event loop - produce requests
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void blockstore::loop()
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{
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if (initialized != 10)
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{
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// read metadata, then journal
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if (initialized == 0)
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{
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metadata_init_reader = new blockstore_init_meta(this);
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initialized = 1;
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}
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else if (initialized == 1)
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{
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int res = metadata_init_reader->loop();
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if (!res)
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{
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delete metadata_init_reader;
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metadata_init_reader = NULL;
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journal_init_reader = new blockstore_init_journal(this);
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initialized = 2;
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}
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}
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else if (initialized == 2)
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{
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int res = journal_init_reader->loop();
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if (!res)
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{
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delete journal_init_reader;
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journal_init_reader = NULL;
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initialized = 10;
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}
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}
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}
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else
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{
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}
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}
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