blob: 034324b713a51e8abca7c98ca4dcdf0ad2114b42 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
// file : mod/database-module -*- C++ -*-
// copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#ifndef MOD_DATABASE_MODULE
#define MOD_DATABASE_MODULE
#include <odb/forward.hxx> // database
#include <brep/types>
#include <brep/utility>
#include <mod/module>
#include <mod/options>
namespace brep
{
// A module 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 module
{
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 module::init() virtual functions. This
// way all functions get to the same scope and become overloaded set.
//
using module::init;
void
init (const options::db&);
virtual bool
handle (request&, response&) = 0;
protected:
size_t retry_;
shared_ptr<odb::core::database> db_;
private:
virtual bool
handle (request&, response&, log&);
};
}
#endif // MOD_DATABASE_MODULE
|
