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
|
// SPDX-License-Identifier: GPL-3.0-or-later
#include "aws_kinesis.h"
/**
* Clean AWS Kinesis *
*/
void aws_kinesis_cleanup(struct instance *instance)
{
info("EXPORTING: cleaning up instance %s ...", instance->config.name);
kinesis_shutdown(instance->connector_specific_data);
freez(instance->connector_specific_data);
struct aws_kinesis_specific_config *connector_specific_config = instance->config.connector_specific_config;
if (connector_specific_config) {
freez(connector_specific_config->auth_key_id);
freez(connector_specific_config->secure_key);
freez(connector_specific_config->stream_name);
freez(connector_specific_config);
}
info("EXPORTING: instance %s exited", instance->config.name);
instance->exited = 1;
}
/**
* Initialize AWS Kinesis connector instance
*
* @param instance an instance data structure.
* @return Returns 0 on success, 1 on failure.
*/
int init_aws_kinesis_instance(struct instance *instance)
{
instance->worker = aws_kinesis_connector_worker;
instance->start_batch_formatting = NULL;
instance->start_host_formatting = format_host_labels_json_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_json_plaintext;
else
instance->metric_formatting = format_dimension_stored_json_plaintext;
instance->end_chart_formatting = NULL;
instance->variables_formatting = NULL;
instance->end_host_formatting = flush_host_labels;
instance->end_batch_formatting = NULL;
instance->prepare_header = NULL;
instance->check_response = NULL;
instance->buffer = (void *)buffer_create(0, &netdata_buffers_statistics.buffers_exporters);
if (!instance->buffer) {
error("EXPORTING: cannot create buffer for AWS Kinesis exporting connector instance %s", instance->config.name);
return 1;
}
if (uv_mutex_init(&instance->mutex))
return 1;
if (uv_cond_init(&instance->cond_var))
return 1;
if (!instance->engine->aws_sdk_initialized) {
aws_sdk_init();
instance->engine->aws_sdk_initialized = 1;
}
struct aws_kinesis_specific_config *connector_specific_config = instance->config.connector_specific_config;
struct aws_kinesis_specific_data *connector_specific_data = callocz(1, sizeof(struct aws_kinesis_specific_data));
instance->connector_specific_data = (void *)connector_specific_data;
if (!strcmp(connector_specific_config->stream_name, "")) {
error("stream name is a mandatory Kinesis parameter but it is not configured");
return 1;
}
kinesis_init(
(void *)connector_specific_data,
instance->config.destination,
connector_specific_config->auth_key_id,
connector_specific_config->secure_key,
instance->config.timeoutms);
return 0;
}
/**
* AWS Kinesis connector worker
*
* Runs in a separate thread for every instance.
*
* @param instance_p an instance data structure.
*/
void aws_kinesis_connector_worker(void *instance_p)
{
struct instance *instance = (struct instance *)instance_p;
struct aws_kinesis_specific_config *connector_specific_config = instance->config.connector_specific_config;
struct aws_kinesis_specific_data *connector_specific_data = instance->connector_specific_data;
while (!instance->engine->exit) {
unsigned long long partition_key_seq = 0;
struct stats *stats = &instance->stats;
uv_mutex_lock(&instance->mutex);
while (!instance->data_is_ready)
uv_cond_wait(&instance->cond_var, &instance->mutex);
instance->data_is_ready = 0;
if (unlikely(instance->engine->exit)) {
uv_mutex_unlock(&instance->mutex);
break;
}
// reset the monitoring chart counters
stats->received_bytes =
stats->sent_bytes =
stats->sent_metrics =
stats->lost_metrics =
stats->receptions =
stats->transmission_successes =
stats->transmission_failures =
stats->data_lost_events =
stats->lost_bytes =
stats->reconnects = 0;
BUFFER *buffer = (BUFFER *)instance->buffer;
size_t buffer_len = buffer_strlen(buffer);
stats->buffered_bytes = buffer_len;
size_t sent = 0;
while (sent < buffer_len) {
char partition_key[KINESIS_PARTITION_KEY_MAX + 1];
snprintf(partition_key, KINESIS_PARTITION_KEY_MAX, "netdata_%llu", partition_key_seq++);
size_t partition_key_len = strnlen(partition_key, KINESIS_PARTITION_KEY_MAX);
const char *first_char = buffer_tostring(buffer) + sent;
size_t record_len = 0;
// split buffer into chunks of maximum allowed size
if (buffer_len - sent < KINESIS_RECORD_MAX - partition_key_len) {
record_len = buffer_len - sent;
} else {
record_len = KINESIS_RECORD_MAX - partition_key_len;
while (record_len && *(first_char + record_len - 1) != '\n')
record_len--;
}
char error_message[ERROR_LINE_MAX + 1] = "";
debug(
D_EXPORTING,
"EXPORTING: kinesis_put_record(): dest = %s, id = %s, key = %s, stream = %s, partition_key = %s, \
buffer = %zu, record = %zu",
instance->config.destination,
connector_specific_config->auth_key_id,
connector_specific_config->secure_key,
connector_specific_config->stream_name,
partition_key,
buffer_len,
record_len);
kinesis_put_record(
connector_specific_data, connector_specific_config->stream_name, partition_key, first_char, record_len);
sent += record_len;
stats->transmission_successes++;
size_t sent_bytes = 0, lost_bytes = 0;
if (unlikely(kinesis_get_result(
connector_specific_data->request_outcomes, error_message, &sent_bytes, &lost_bytes))) {
// oops! we couldn't send (all or some of the) data
error("EXPORTING: %s", error_message);
error(
"EXPORTING: failed to write data to external database '%s'. Willing to write %zu bytes, wrote %zu bytes.",
instance->config.destination, sent_bytes, sent_bytes - lost_bytes);
stats->transmission_failures++;
stats->data_lost_events++;
stats->lost_bytes += lost_bytes;
// estimate the number of lost metrics
stats->lost_metrics += (collected_number)(
stats->buffered_metrics *
(buffer_len && (lost_bytes > buffer_len) ? (double)lost_bytes / buffer_len : 1));
break;
} else {
stats->receptions++;
}
if (unlikely(instance->engine->exit))
break;
}
stats->sent_bytes += sent;
if (likely(sent == buffer_len))
stats->sent_metrics = stats->buffered_metrics;
buffer_flush(buffer);
send_internal_metrics(instance);
stats->buffered_metrics = 0;
uv_mutex_unlock(&instance->mutex);
#ifdef UNIT_TESTING
return;
#endif
}
aws_kinesis_cleanup(instance);
}
|
