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
226
227
228
|
// SPDX-License-Identifier: GPL-3.0-or-later
#include "graphite.h"
/**
* Initialize Graphite connector instance
*
* @param instance an instance data structure.
* @return Returns 0 on success, 1 on failure.
*/
int init_graphite_instance(struct instance *instance)
{
instance->worker = simple_connector_worker;
struct simple_connector_config *connector_specific_config = callocz(1, sizeof(struct simple_connector_config));
instance->config.connector_specific_config = (void *)connector_specific_config;
connector_specific_config->default_port = 2003;
struct simple_connector_data *connector_specific_data = callocz(1, sizeof(struct simple_connector_data));
instance->connector_specific_data = connector_specific_data;
#ifdef ENABLE_HTTPS
connector_specific_data->flags = NETDATA_SSL_START;
connector_specific_data->conn = NULL;
if (instance->config.options & EXPORTING_OPTION_USE_TLS) {
security_start_ssl(NETDATA_SSL_CONTEXT_EXPORTING);
}
#endif
instance->start_batch_formatting = NULL;
instance->start_host_formatting = format_host_labels_graphite_plaintext;
instance->start_chart_formatting = NULL;
if (EXPORTING_OPTIONS_DATA_SOURCE(instance->config.options) == EXPORTING_SOURCE_DATA_AS_COLLECTED)
instance->metric_formatting = format_dimension_collected_graphite_plaintext;
else
instance->metric_formatting = format_dimension_stored_graphite_plaintext;
instance->end_chart_formatting = NULL;
instance->end_host_formatting = flush_host_labels;
instance->end_batch_formatting = simple_connector_end_batch;
if (instance->config.type == EXPORTING_CONNECTOR_TYPE_GRAPHITE_HTTP)
instance->prepare_header = graphite_http_prepare_header;
else
instance->prepare_header = NULL;
instance->check_response = exporting_discard_response;
instance->buffer = (void *)buffer_create(0);
if (!instance->buffer) {
error("EXPORTING: cannot create buffer for graphite exporting connector instance %s", instance->config.name);
return 1;
}
simple_connector_init(instance);
if (uv_mutex_init(&instance->mutex))
return 1;
if (uv_cond_init(&instance->cond_var))
return 1;
return 0;
}
/**
* Copy a label value and substitute underscores in place of charachters which can't be used in Graphite output
*
* @param dst a destination string.
* @param src a source string.
* @param len the maximum number of characters copied.
*/
void sanitize_graphite_label_value(char *dst, char *src, size_t len)
{
while (*src != '\0' && len) {
if (isspace(*src) || *src == ';' || *src == '~')
*dst++ = '_';
else
*dst++ = *src;
src++;
len--;
}
*dst = '\0';
}
/**
* Format host labels for JSON connector
*
* @param instance an instance data structure.
* @param host a data collecting host.
* @return Always returns 0.
*/
int format_host_labels_graphite_plaintext(struct instance *instance, RRDHOST *host)
{
if (!instance->labels)
instance->labels = buffer_create(1024);
if (unlikely(!sending_labels_configured(instance)))
return 0;
rrdhost_check_rdlock(host);
netdata_rwlock_rdlock(&host->labels.labels_rwlock);
for (struct label *label = host->labels.head; label; label = label->next) {
if (!should_send_label(instance, label))
continue;
char value[CONFIG_MAX_VALUE + 1];
sanitize_graphite_label_value(value, label->value, CONFIG_MAX_VALUE);
if (*value) {
buffer_strcat(instance->labels, ";");
buffer_sprintf(instance->labels, "%s=%s", label->key, value);
}
}
netdata_rwlock_unlock(&host->labels.labels_rwlock);
return 0;
}
/**
* Format dimension using collected data for Graphite connector
*
* @param instance an instance data structure.
* @param rd a dimension.
* @return Always returns 0.
*/
int format_dimension_collected_graphite_plaintext(struct instance *instance, RRDDIM *rd)
{
RRDSET *st = rd->rrdset;
RRDHOST *host = st->rrdhost;
char chart_name[RRD_ID_LENGTH_MAX + 1];
exporting_name_copy(
chart_name,
(instance->config.options & EXPORTING_OPTION_SEND_NAMES && st->name) ? st->name : st->id,
RRD_ID_LENGTH_MAX);
char dimension_name[RRD_ID_LENGTH_MAX + 1];
exporting_name_copy(
dimension_name,
(instance->config.options & EXPORTING_OPTION_SEND_NAMES && rd->name) ? rd->name : rd->id,
RRD_ID_LENGTH_MAX);
buffer_sprintf(
instance->buffer,
"%s.%s.%s.%s%s%s%s " COLLECTED_NUMBER_FORMAT " %llu\n",
instance->config.prefix,
(host == localhost) ? instance->config.hostname : host->hostname,
chart_name,
dimension_name,
(host->tags) ? ";" : "",
(host->tags) ? host->tags : "",
(instance->labels) ? buffer_tostring(instance->labels) : "",
rd->last_collected_value,
(unsigned long long)rd->last_collected_time.tv_sec);
return 0;
}
/**
* Format dimension using a calculated value from stored data for Graphite connector
*
* @param instance an instance data structure.
* @param rd a dimension.
* @return Always returns 0.
*/
int format_dimension_stored_graphite_plaintext(struct instance *instance, RRDDIM *rd)
{
RRDSET *st = rd->rrdset;
RRDHOST *host = st->rrdhost;
char chart_name[RRD_ID_LENGTH_MAX + 1];
exporting_name_copy(
chart_name,
(instance->config.options & EXPORTING_OPTION_SEND_NAMES && st->name) ? st->name : st->id,
RRD_ID_LENGTH_MAX);
char dimension_name[RRD_ID_LENGTH_MAX + 1];
exporting_name_copy(
dimension_name,
(instance->config.options & EXPORTING_OPTION_SEND_NAMES && rd->name) ? rd->name : rd->id,
RRD_ID_LENGTH_MAX);
time_t last_t;
calculated_number value = exporting_calculate_value_from_stored_data(instance, rd, &last_t);
if(isnan(value))
return 0;
buffer_sprintf(
instance->buffer,
"%s.%s.%s.%s%s%s%s " CALCULATED_NUMBER_FORMAT " %llu\n",
instance->config.prefix,
(host == localhost) ? instance->config.hostname : host->hostname,
chart_name,
dimension_name,
(host->tags) ? ";" : "",
(host->tags) ? host->tags : "",
(instance->labels) ? buffer_tostring(instance->labels) : "",
value,
(unsigned long long)last_t);
return 0;
}
/**
* Ppepare HTTP header
*
* @param instance an instance data structure.
* @return Returns 0 on success, 1 on failure.
*/
void graphite_http_prepare_header(struct instance *instance)
{
struct simple_connector_data *simple_connector_data = instance->connector_specific_data;
buffer_sprintf(
simple_connector_data->last_buffer->header,
"POST /api/put HTTP/1.1\r\n"
"Host: %s\r\n"
"Content-Type: application/graphite\r\n"
"Content-Length: %lu\r\n"
"\r\n",
instance->config.destination,
buffer_strlen(simple_connector_data->last_buffer->buffer));
return;
}
|
