/
remotedbapi.c
225 lines (216 loc) · 6.31 KB
/
remotedbapi.c
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
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
/********************************************************************/
/* Copyright (C) MC2Lab-USTC, 2012 */
/* */
/* FILE NAME : remotedbapi.c */
/* PRINCIPAL AUTHOR : SLK */
/* SUBSYSTEM NAME : network */
/* MODULE NAME : remotedbapi */
/* LANGUAGE : C */
/* TARGET ENVIRONMENT : Linux */
/* DATE OF FIRST RELEASE : 2012/12/14 */
/* DESCRIPTION : Impement of Cliet Side Interface */
/* to access database */
/********************************************************************/
/*
* Revision log:
*
* Created by SLK,2012/12/14
*
*/
#include "net.h"
#include "protocol.h"
#include "remotedbapi.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#define MAX_BUF_LEN 1024
#define debug
/*
* Create an Database
*/
int CreateRemoteDB(char *addr, int port, const char * dbName)
{
if(dbName == NULL)
{
fprintf(stderr, "filename Error,%s:%d\n", __FILE__, __LINE__);
dbName = "default.hdb";
}
/* connect server */
tServiceHandler h = OpenRemoteService(addr, port);
if(h == -1)
{
return -1;
}
/* open database file */
char Buf[MAX_BUF_LEN] = "\0";
int BufSize = MAX_BUF_LEN;
FormatData1(Buf, &BufSize, OPEN_CMD, (char*)dbName, strlen(dbName));
SendData(h, Buf, BufSize);
BufSize = MAX_BUF_LEN;
RecvData(h, Buf, &BufSize);
int cmd = -1;
int DataNum = -1;
char Data1[MAX_BUF_LEN] = "\0";
int Data1Size = MAX_BUF_LEN;
char Data2[MAX_BUF_LEN] = "\0";
int Data2Size = MAX_BUF_LEN;
ParseData(Buf, MAX_BUF_LEN, &cmd, &DataNum, Data1, &Data1Size, Data2, &Data2Size);
if(cmd != OPEN_RSP || DataNum != 0)
{
fprintf(stderr, "CreateRemoteDB Error,%s:%d\n", __FILE__, __LINE__);
return -1;
}
return h;
}
/*
* Delete the Database
*/
int CloseRemoteDB(int db)
{
/* close database file */
char Buf[MAX_BUF_LEN] = "\0";
int BufSize = MAX_BUF_LEN;
FormatData(Buf, &BufSize, CLOSE_CMD);
//SendData(*(tServiceHandler*)db, Buf, BufSize);
SendData(db, Buf, BufSize);
BufSize = MAX_BUF_LEN;
if(RecvData(db, Buf, &BufSize) == 0)
{
fprintf(stderr, "Connection Error,%s:%d\n", __FILE__, __LINE__);
return -1;
}
int cmd = -1;
int DataNum = -1;
char Data1[MAX_BUF_LEN] = "\0";
int Data1Size = MAX_BUF_LEN;
char Data2[MAX_BUF_LEN] = "\0";
int Data2Size = MAX_BUF_LEN;
ParseData(Buf, MAX_BUF_LEN, &cmd, &DataNum, Data1, &Data1Size, Data2, &Data2Size);
if(cmd != CLOSE_RSP || DataNum != 0)
{
fprintf(stderr, "Remote DBDelete Error,%s:%d\n", __FILE__, __LINE__);
return -1;
}
/* close connection */
if(CloseRemoteService(db) == -1)
{
return -1;
}
return 0;
}
/*
* Set key/value
*/
int SetRecordRemote(int db, tKey key, tValue value)
{
debug("SET_CMD:%d -> %s\n", key, value.str);
char Buf[MAX_BUF_LEN] = "\0";
int BufSize = MAX_BUF_LEN;
int ret = FormatData2(Buf, &BufSize, SET_CMD, (char*)&key, sizeof(tKey), value.str,value.len);
if(ret == -1)
{
return -1;
}
SendData(db, Buf, BufSize);
BufSize = MAX_BUF_LEN;
if(RecvData(db, Buf, &BufSize) == 0)
{
fprintf(stderr, "Connection Error,%s:%d\n", __FILE__, __LINE__);
return -1;
}
int cmd = -1;
int DataNum = -1;
char Data1[MAX_BUF_LEN] = "\0";
int Data1Size = MAX_BUF_LEN;
char Data2[MAX_BUF_LEN] = "\0";
int Data2Size = MAX_BUF_LEN;
ParseData(Buf, BufSize, &cmd, &DataNum, Data1, &Data1Size, Data2, &Data2Size);
if(cmd != SET_RSP || DataNum != 0)
{
fprintf(stderr, "SetRecordRemote Error,%s:%d\n", __FILE__, __LINE__);
return -1;
}
return 0;
}
/*
* get key/value
*/
int GetRecordRemote(int db, tKey key, tValue *pvalue)
{
if(db == -1 || pvalue == NULL)
{
return -1;
}
char Buf[MAX_BUF_LEN] = "\0";
int BufSize = MAX_BUF_LEN;
int ret = FormatData1(Buf, &BufSize, GET_CMD, (char*)&key, sizeof(tKey));
if(ret == -1)
{
return -1;
}
SendData(db, Buf, BufSize);
BufSize = MAX_BUF_LEN;
if(RecvData(db, Buf, &BufSize) == 0)
{
fprintf(stderr, "Connection Error,%s:%d\n", __FILE__, __LINE__);
return -1;
}
int cmd = -1;
int DataNum = -1;
char Data1[MAX_BUF_LEN] = "\0";
int Data1Size = MAX_BUF_LEN;
char Data2[MAX_BUF_LEN] = "\0";
int Data2Size = MAX_BUF_LEN;
ParseData(Buf, BufSize, &cmd, &DataNum, Data1, &Data1Size, Data2, &Data2Size);
if(cmd == ERROR_RSP && DataNum == 1)
{
return -1;
}
if(cmd != GET_RSP || DataNum != 2
|| key != *(tKey*)Data1 || Data1Size != sizeof(tKey))
{
fprintf(stderr, "GetRecordRemote Error,%s:%d\n", __FILE__, __LINE__);
return -1;
}
pvalue->len = Data2Size;
pvalue->str = Data2;
return 0;
}
/*
* delete key/value
*/
int DeleteRecordRemote(int db, tKey key)
{
if(db == -1)
{
return -1;
}
char Buf[MAX_BUF_LEN] = "\0";
int BufSize = MAX_BUF_LEN;
int ret = FormatData1(Buf, &BufSize, DELETE_CMD, (char*)&key, sizeof(tKey));
if(ret == -1)
{
return -1;
}
SendData(db, Buf, BufSize);
BufSize = MAX_BUF_LEN;
if(RecvData(db, Buf, &BufSize) == 0)
{
fprintf(stderr, "Connection Error,%s:%d\n", __FILE__, __LINE__);
return -1;
}
int cmd = -1;
int DataNum = -1;
char Data1[MAX_BUF_LEN] = "\0";
int Data1Size = MAX_BUF_LEN;
char Data2[MAX_BUF_LEN] = "\0";
int Data2Size = MAX_BUF_LEN;
ParseData(Buf, BufSize, &cmd, &DataNum, Data1, &Data1Size, Data2, &Data2Size);
if(cmd == ERROR_RSP && DataNum == 1)
{
fprintf(stderr, "%s,%s:%d\n", Data1, __FILE__, __LINE__);
return -1;
}
return 0;
}