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
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
|
// file : mod/database-module.cxx -*- C++ -*-
// license : MIT; see accompanying LICENSE file
#include <mod/database-module.hxx>
#include <odb/database.hxx>
#include <odb/exceptions.hxx>
#include <odb/transaction.hxx>
#include <libbrep/build-package.hxx>
#include <libbrep/build-package-odb.hxx>
#include <mod/database.hxx>
#include <mod/module-options.hxx>
namespace brep
{
using namespace odb::core;
// While currently the user-defined copy constructor is not required (we
// don't need to deep copy nullptr's), it is a good idea to keep the
// placeholder ready for less trivial cases.
//
database_module::
database_module (const database_module& r)
: handler (r),
retry_ (r.retry_),
package_db_ (r.initialized_ ? r.package_db_ : nullptr),
build_db_ (r.initialized_ ? r.build_db_ : nullptr)
{
}
void database_module::
init (const options::package_db& o, size_t retry)
{
package_db_ = shared_database (o.package_db_user (),
o.package_db_role (),
o.package_db_password (),
o.package_db_name (),
o.package_db_host (),
o.package_db_port (),
o.package_db_max_connections ());
retry_ = retry_ < retry ? retry : retry_;
}
void database_module::
init (const options::build_db& o, size_t retry)
{
build_db_ = shared_database (o.build_db_user (),
o.build_db_role (),
o.build_db_password (),
o.build_db_name (),
o.build_db_host (),
o.build_db_port (),
o.build_db_max_connections ());
retry_ = retry_ < retry ? retry : retry_;
}
bool database_module::
handle (request& rq, response& rs, log& l)
try
{
return handler::handle (rq, rs, l);
}
catch (const odb::recoverable& e)
{
if (retry_-- > 0)
{
HANDLER_DIAG;
l1 ([&]{trace << e << "; " << retry_ + 1 << " retries left";});
throw retry ();
}
throw;
}
optional<string> database_module::
update_tenant_service_state (
const connection_ptr& conn,
const string& type,
const string& id,
const function<optional<string> (const string& tenant_id,
const tenant_service&)>& f)
{
assert (f != nullptr); // Shouldn't be called otherwise.
// Must be initialized via the init(options::build_db) function call.
//
assert (build_db_ != nullptr);
optional<string> r;
for (size_t retry (retry_);; )
{
try
{
transaction tr (conn->begin ());
using query = query<build_tenant>;
shared_ptr<build_tenant> t (
build_db_->query_one<build_tenant> (query::service.id == id &&
query::service.type == type));
if (t != nullptr && t->service)
{
tenant_service& s (*t->service);
if (optional<string> data = f (t->id, s))
{
s.data = move (*data);
build_db_->update (t);
r = move (s.data);
}
}
tr.commit ();
// Bail out if we have successfully updated the service state.
//
break;
}
catch (const odb::recoverable& e)
{
HANDLER_DIAG;
// If no more retries left, don't re-throw odb::recoverable not to
// retry at the upper level.
//
if (retry-- == 0)
fail << e << "; no tenant service state update retries left";
l1 ([&]{trace << e << "; " << retry + 1 << " tenant service "
<< "state update retries left";});
r = nullopt; // Prepare for the next iteration.
}
}
return r;
}
}
|
