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63 lines
2.0 KiB
C++
63 lines
2.0 KiB
C++
#pragma once
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#include "data/BackendInterface.hpp"
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#include "data/CassandraBackend.hpp"
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#include "data/KeyspaceBackend.hpp"
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#include "data/LedgerCacheInterface.hpp"
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#include "data/cassandra/SettingsProvider.hpp"
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#include "util/config/ConfigDefinition.hpp"
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#include "util/log/Logger.hpp"
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#include <boost/algorithm/string.hpp>
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#include <boost/algorithm/string/predicate.hpp>
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#include <memory>
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#include <stdexcept>
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#include <string>
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namespace data {
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/**
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* @brief A factory function that creates the backend based on a config.
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*
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* @param config The clio config to use
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* @param cache The ledger cache to use
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* @return A shared_ptr<BackendInterface> with the selected implementation
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*/
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inline std::shared_ptr<BackendInterface>
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makeBackend(util::config::ClioConfigDefinition const& config, data::LedgerCacheInterface& cache)
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{
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using namespace cassandra::impl;
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static util::Logger const log{"Backend"}; // NOLINT(readability-identifier-naming)
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LOG(log.info()) << "Constructing BackendInterface";
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auto const readOnly = config.get<bool>("read_only");
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auto const type = config.get<std::string>("database.type");
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std::shared_ptr<BackendInterface> backend = nullptr;
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if (boost::iequals(type, "cassandra")) {
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auto const cfg = config.getObject("database." + type);
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if (providerFromString(cfg.getValueView("provider").asString()) == Provider::Keyspace) {
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backend = std::make_shared<data::cassandra::KeyspaceBackend>(
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data::cassandra::SettingsProvider{cfg}, cache, readOnly
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);
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} else {
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backend = std::make_shared<data::cassandra::CassandraBackend>(
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data::cassandra::SettingsProvider{cfg}, cache, readOnly
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);
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}
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}
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if (!backend)
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throw std::runtime_error("Invalid database type");
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auto const rng = backend->hardFetchLedgerRangeNoThrow();
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if (rng)
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backend->setRange(rng->minSequence, rng->maxSequence);
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LOG(log.info()) << "Constructed BackendInterface Successfully";
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return backend;
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}
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} // namespace data
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