forked from tobiasschuerg/InfluxDB-Client-for-Arduino
-
Notifications
You must be signed in to change notification settings - Fork 0
/
InfluxDb.cpp
99 lines (85 loc) · 2.14 KB
/
InfluxDb.cpp
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
/**
ESP8266 InfluxDb: Influxdb.cpp
Purpose: Helps with sending measurements to an Influx database.
@author Tobias Schürg
*/
#include "InfluxDb.h"
#include "Arduino.h"
/**
* Construct an InfluxDb instance.
* @param host the InfluxDb host
* @param port the InfluxDb port
*/
Influxdb::Influxdb(String host, uint16_t port) {
_port = port;
_host = host;
}
/**
* Set the database to be used.
*/
void Influxdb::setDb(String db) {
_db = String(db);
begin();
}
/**
* Set the database to be used with authentication.
*/
void Influxdb::setDbAuth(String db, String user, String pass) {
_db = String(db);
_user = user;
_pass = pass;
begin();
}
void Influxdb::begin() {
// TODO: recreate HttpClient on db change?
if (_user && _pass) {
http.begin(_host, _port, "/write?u=" + _user + "&p=" + _pass + "&db=" + _db);
} else {
http.begin(_host, _port, "/write?db=" + _db);
}
http.addHeader("Content-Type", "text/plain");
}
/**
* Prepare a measurement to be sent.
*/
void Influxdb::prepare(InfluxData data) { prepared.push_back(data); }
/**
* Write all prepared measurements into the db.
*/
boolean Influxdb::write() {
String data = "";
for (auto const& i : prepared) {
data = (data == "") ? (i.toString()) : (data + "\n" + i.toString());
}
prepared.clear();
return write(data);
}
/**
* Write a single measurement into the db.
*/
boolean Influxdb::write(InfluxData data) { return write(data.toString()); }
/**
* Send raw data to InfluxDb.
*
* @see
* https://github.com/esp8266/Arduino/blob/cc0bfa04d401810ed3f5d7d01be6e88b9011997f/libraries/ESP8266HTTPClient/src/ESP8266HTTPClient.h#L44-L55
* for a list of error codes.
*/
boolean Influxdb::write(String data) {
Serial.print(" --> writing to " + _db + ":\n");
Serial.println(data);
int httpResponseCode = http.POST(data);
Serial.print(" <-- Response: ");
Serial.print(httpResponseCode);
String response = http.getString();
Serial.println(" \"" + response + "\"");
boolean success;
if (httpResponseCode == 204) {
success = true;
} else {
Serial.println("#####\nPOST FAILED\n#####");
success = false;
}
http.end();
return success;
}