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// file : mod/database-module.hxx -*- C++ -*-
// copyright : Copyright (c) 2014-2018 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#ifndef MOD_DATABASE_MODULE_HXX
#define MOD_DATABASE_MODULE_HXX
#include <odb/forward.hxx> // database
#include <libbrep/types.hxx>
#include <libbrep/utility.hxx>
#include <mod/module.hxx>
#include <mod/options.hxx>
namespace brep
{
// A handler that utilises the database. Specifically, it will retry the
// request in the face of recoverable database failures (deadlock, loss of
// connection, etc) up to a certain number of times.
//
class database_module: public handler
{
protected:
database_module () = default;
// Create a shallow copy (handling instance) if initialized and a deep
// copy (context exemplar) otherwise.
//
explicit
database_module (const database_module&);
// Required to avoid getting warning from clang that
// database_module::init() hides handler::init() virtual functions. This
// way all functions get to the same scope and become overloaded set.
//
using handler::init;
// Initialize the package database instance. Throw odb::exception on
// failure.
//
void
init (const options::package_db&, size_t retry);
// Initialize the build database instance. Throw odb::exception on
// database failure.
//
void
init (const options::build_db&, size_t retry);
virtual bool
handle (request&, response&) = 0;
protected:
size_t retry_ = 0; // Max of all retries.
shared_ptr<odb::core::database> package_db_;
shared_ptr<odb::core::database> build_db_; // NULL if not building.
private:
virtual bool
handle (request&, response&, log&);
};
}
#endif // MOD_DATABASE_MODULE_HXX
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