blob: 30bbeed1f0ff535f289a0a0fcb631e6ff9cd507b (
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
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
|
// Copyright (C) 2015 - 2016 Deutsche Telekom AG.
//
// Author: Razvan Becheriu <razvan.becheriu@qualitance.com>
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef CQL_CONNECTION_H
#define CQL_CONNECTION_H
#include <dhcpsrv/database_connection.h>
#include <dhcpsrv/dhcpsrv_log.h>
#include <inttypes.h>
#include <cassandra.h>
#include <vector>
namespace isc {
namespace dhcp {
/// @brief Defines a single query
///
/// @param params_ Bind parameter names
/// @param name_ Short name of the query.
/// @param text_ Text representation of the actual query.
struct CqlTaggedStatement {
const char** params_;
const char* name_;
const char* text_;
};
// Defines CQL backend version: 2.3
const uint32_t CQL_DRIVER_VERSION_MAJOR = CASS_VERSION_MAJOR;
const uint32_t CQL_DRIVER_VERSION_MINOR = CASS_VERSION_MINOR;
/// Defines CQL schema version: 1.0
const uint32_t CQL_SCHEMA_VERSION_MAJOR = 1;
const uint32_t CQL_SCHEMA_VERSION_MINOR = 0;
class CqlConnection : public DatabaseConnection {
public:
/// @brief Constructor
///
/// Initialize CqlConnection object with parameters needed for connection.
CqlConnection(const ParameterMap& parameters);
/// @brief Destructor
virtual ~CqlConnection();
/// @brief Prepare statements
///
/// Creates the prepared statements for all of the CQL statements used
/// by the CQL backend.
///
/// @throw isc::dhcp::DbOperationError An operation on the open database has
/// failed.
/// @throw isc::InvalidParameter 'index' is not valid for the vector. This
/// represents an internal error within the code.
void prepareStatements(CqlTaggedStatement *statements);
/// @brief Open Database
///
/// Opens the database using the information supplied in the parameters
/// passed to the constructor. If no parameters are supplied, the default
/// values will be used (keyspace keatest).
///
/// @throw DbOpenError Error opening the database
void openDatabase();
/// @brief Commit Transactions
///
/// This is a no-op for Cassandra.
virtual void commit();
/// @brief Rollback Transactions
///
/// This is a no-op for Cassandra.
virtual void rollback();
/// @brief Check Error
///
/// Chech error for current database operation.
void checkStatementError(std::string& error, CassFuture* future,
uint32_t stindex, const char* what) const;
/// @brief Check Error
///
/// Chech error for current database operation.
void checkStatementError(std::string& error, CassFuture* future,
const char* what) const;
/// @brief CQL connection handle
CassCluster* cluster_;
/// @brief CQL session handle
CassSession* session_;
/// @brief CQL prepared statements - used for faster statement execution using
/// bind functionality
std::vector<const CassPrepared*> statements_;
/// @brief Pointer to external array of tagged statements containing statement
/// name, array of names of bind parameters and text query
CqlTaggedStatement* tagged_statements_;
};
}; // end of isc::dhcp namespace
}; // end of isc namespace
#endif // CQL_CONNECTION_H
|
