#include "collectd.h"
-#include "plugin.h"
#include "common.h"
+#include "plugin.h"
#include "utils_cache.h"
/*
* Private variables
*/
-static const char *config_keys[] =
-{
- "DataDir",
- "StoreRates"
-};
-static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
-
-static char *datadir = NULL;
-static int store_rates = 0;
-static int use_stdio = 0;
-
-static int value_list_to_string (char *buffer, int buffer_len,
- const data_set_t *ds, const value_list_t *vl)
-{
- int offset;
- int status;
- gauge_t *rates = NULL;
-
- assert (0 == strcmp (ds->type, vl->type));
-
- memset (buffer, '\0', buffer_len);
-
- status = ssnprintf (buffer, buffer_len, "%.3f",
- CDTIME_T_TO_DOUBLE (vl->time));
- if ((status < 1) || (status >= buffer_len))
- return (-1);
- offset = status;
-
- for (size_t i = 0; i < ds->ds_num; i++)
- {
- if ((ds->ds[i].type != DS_TYPE_COUNTER)
- && (ds->ds[i].type != DS_TYPE_GAUGE)
- && (ds->ds[i].type != DS_TYPE_DERIVE)
- && (ds->ds[i].type != DS_TYPE_ABSOLUTE))
- {
- sfree (rates);
- return (-1);
- }
-
- if (ds->ds[i].type == DS_TYPE_GAUGE)
- {
- status = ssnprintf (buffer + offset, buffer_len - offset,
- ",%lf", vl->values[i].gauge);
- }
- else if (store_rates != 0)
- {
- if (rates == NULL)
- rates = uc_get_rate (ds, vl);
- if (rates == NULL)
- {
- WARNING ("csv plugin: "
- "uc_get_rate failed.");
- return (-1);
- }
- status = ssnprintf (buffer + offset,
- buffer_len - offset,
- ",%lf", rates[i]);
- }
- else if (ds->ds[i].type == DS_TYPE_COUNTER)
- {
- status = ssnprintf (buffer + offset,
- buffer_len - offset,
- ",%llu",
- vl->values[i].counter);
- }
- else if (ds->ds[i].type == DS_TYPE_DERIVE)
- {
- status = ssnprintf (buffer + offset,
- buffer_len - offset,
- ",%"PRIi64,
- vl->values[i].derive);
- }
- else if (ds->ds[i].type == DS_TYPE_ABSOLUTE)
- {
- status = ssnprintf (buffer + offset,
- buffer_len - offset,
- ",%"PRIu64,
- vl->values[i].absolute);
- }
-
- if ((status < 1) || (status >= (buffer_len - offset)))
- {
- sfree (rates);
- return (-1);
- }
-
- offset += status;
- } /* for ds->ds_num */
-
- sfree (rates);
- return (0);
+static const char *config_keys[] = {"DataDir", "StoreRates"};
+static int config_keys_num = STATIC_ARRAY_SIZE(config_keys);
+
+static char *datadir;
+static int store_rates;
+static int use_stdio;
+
+static int value_list_to_string(char *buffer, int buffer_len,
+ const data_set_t *ds, const value_list_t *vl) {
+ int offset;
+ int status;
+ gauge_t *rates = NULL;
+
+ assert(0 == strcmp(ds->type, vl->type));
+
+ memset(buffer, '\0', buffer_len);
+
+ status = snprintf(buffer, buffer_len, "%.3f", CDTIME_T_TO_DOUBLE(vl->time));
+ if ((status < 1) || (status >= buffer_len))
+ return -1;
+ offset = status;
+
+ for (size_t i = 0; i < ds->ds_num; i++) {
+ if ((ds->ds[i].type != DS_TYPE_COUNTER) &&
+ (ds->ds[i].type != DS_TYPE_GAUGE) &&
+ (ds->ds[i].type != DS_TYPE_DERIVE) &&
+ (ds->ds[i].type != DS_TYPE_ABSOLUTE)) {
+ sfree(rates);
+ return -1;
+ }
+
+ if (ds->ds[i].type == DS_TYPE_GAUGE) {
+ status = snprintf(buffer + offset, buffer_len - offset, ",%lf",
+ vl->values[i].gauge);
+ } else if (store_rates != 0) {
+ if (rates == NULL)
+ rates = uc_get_rate(ds, vl);
+ if (rates == NULL) {
+ WARNING("csv plugin: "
+ "uc_get_rate failed.");
+ return -1;
+ }
+ status = snprintf(buffer + offset, buffer_len - offset, ",%lf", rates[i]);
+ } else if (ds->ds[i].type == DS_TYPE_COUNTER) {
+ status = snprintf(buffer + offset, buffer_len - offset, ",%" PRIu64,
+ (uint64_t)vl->values[i].counter);
+ } else if (ds->ds[i].type == DS_TYPE_DERIVE) {
+ status = snprintf(buffer + offset, buffer_len - offset, ",%" PRIi64,
+ vl->values[i].derive);
+ } else if (ds->ds[i].type == DS_TYPE_ABSOLUTE) {
+ status = snprintf(buffer + offset, buffer_len - offset, ",%" PRIu64,
+ vl->values[i].absolute);
+ }
+
+ if ((status < 1) || (status >= (buffer_len - offset))) {
+ sfree(rates);
+ return -1;
+ }
+
+ offset += status;
+ } /* for ds->ds_num */
+
+ sfree(rates);
+ return 0;
} /* int value_list_to_string */
-static int value_list_to_filename (char *buffer, size_t buffer_size,
- value_list_t const *vl)
-{
- int status;
-
- char *ptr = buffer;
- size_t ptr_size = buffer_size;
- time_t now;
- struct tm struct_tm;
-
- if (datadir != NULL)
- {
- size_t len = strlen (datadir) + 1;
-
- if (len >= ptr_size)
- return (ENOBUFS);
-
- memcpy (ptr, datadir, len);
- ptr[len-1] = '/';
- ptr_size -= len;
- ptr += len;
- }
-
- status = FORMAT_VL (ptr, ptr_size, vl);
- if (status != 0)
- return (status);
-
- /* Skip all the time formatting stuff when printing to STDOUT or
- * STDERR. */
- if (use_stdio)
- return (0);
-
- ptr_size -= strlen (ptr);
- ptr += strlen (ptr);
-
- /* "-2013-07-12" => 11 bytes */
- if (ptr_size < 12)
- {
- ERROR ("csv plugin: Buffer too small.");
- return (ENOMEM);
- }
-
- /* TODO: Find a way to minimize the calls to `localtime_r',
- * since they are pretty expensive.. */
- now = time (NULL);
- if (localtime_r (&now, &struct_tm) == NULL)
- {
- ERROR ("csv plugin: localtime_r failed");
- return (-1);
- }
-
- status = strftime (ptr, ptr_size, "-%Y-%m-%d", &struct_tm);
- if (status == 0) /* yep, it returns zero on error. */
- {
- ERROR ("csv plugin: strftime failed");
- return (-1);
- }
-
- return (0);
+static int value_list_to_filename(char *buffer, size_t buffer_size,
+ value_list_t const *vl) {
+ int status;
+
+ char *ptr = buffer;
+ size_t ptr_size = buffer_size;
+ time_t now;
+ struct tm struct_tm;
+
+ if (datadir != NULL) {
+ size_t len = strlen(datadir) + 1;
+
+ if (len >= ptr_size)
+ return ENOBUFS;
+
+ memcpy(ptr, datadir, len);
+ ptr[len - 1] = '/';
+ ptr_size -= len;
+ ptr += len;
+ }
+
+ status = FORMAT_VL(ptr, ptr_size, vl);
+ if (status != 0)
+ return status;
+
+ /* Skip all the time formatting stuff when printing to STDOUT or
+ * STDERR. */
+ if (use_stdio)
+ return 0;
+
+ ptr_size -= strlen(ptr);
+ ptr += strlen(ptr);
+
+ /* "-2013-07-12" => 11 bytes */
+ if (ptr_size < 12) {
+ ERROR("csv plugin: Buffer too small.");
+ return ENOMEM;
+ }
+
+ /* TODO: Find a way to minimize the calls to `localtime_r',
+ * since they are pretty expensive.. */
+ now = time(NULL);
+ if (localtime_r(&now, &struct_tm) == NULL) {
+ ERROR("csv plugin: localtime_r failed");
+ return -1;
+ }
+
+ status = strftime(ptr, ptr_size, "-%Y-%m-%d", &struct_tm);
+ if (status == 0) /* yep, it returns zero on error. */
+ {
+ ERROR("csv plugin: strftime failed");
+ return -1;
+ }
+
+ return 0;
} /* int value_list_to_filename */
-static int csv_create_file (const char *filename, const data_set_t *ds)
-{
- FILE *csv;
+static int csv_create_file(const char *filename, const data_set_t *ds) {
+ FILE *csv;
- if (check_create_dir (filename))
- return (-1);
+ if (check_create_dir(filename))
+ return -1;
- csv = fopen (filename, "w");
- if (csv == NULL)
- {
- char errbuf[1024];
- ERROR ("csv plugin: fopen (%s) failed: %s",
- filename,
- sstrerror (errno, errbuf, sizeof (errbuf)));
- return (-1);
- }
+ csv = fopen(filename, "w");
+ if (csv == NULL) {
+ ERROR("csv plugin: fopen (%s) failed: %s", filename, STRERRNO);
+ return -1;
+ }
- fprintf (csv, "epoch");
- for (size_t i = 0; i < ds->ds_num; i++)
- fprintf (csv, ",%s", ds->ds[i].name);
+ fprintf(csv, "epoch");
+ for (size_t i = 0; i < ds->ds_num; i++)
+ fprintf(csv, ",%s", ds->ds[i].name);
- fprintf (csv, "\n");
- fclose (csv);
+ fprintf(csv, "\n");
+ fclose(csv);
- return 0;
+ return 0;
} /* int csv_create_file */
-static int csv_config (const char *key, const char *value)
-{
- if (strcasecmp ("DataDir", key) == 0)
- {
- if (datadir != NULL)
- {
- free (datadir);
- datadir = NULL;
- }
- if (strcasecmp ("stdout", value) == 0)
- {
- use_stdio = 1;
- return (0);
- }
- else if (strcasecmp ("stderr", value) == 0)
- {
- use_stdio = 2;
- return (0);
- }
- datadir = strdup (value);
- if (datadir != NULL)
- {
- int len = strlen (datadir);
- while ((len > 0) && (datadir[len - 1] == '/'))
- {
- len--;
- datadir[len] = '\0';
- }
- if (len <= 0)
- {
- free (datadir);
- datadir = NULL;
- }
- }
- }
- else if (strcasecmp ("StoreRates", key) == 0)
- {
- if (IS_TRUE (value))
- store_rates = 1;
- else
- store_rates = 0;
- }
- else
- {
- return (-1);
- }
- return (0);
+static int csv_config(const char *key, const char *value) {
+ if (strcasecmp("DataDir", key) == 0) {
+ if (datadir != NULL) {
+ free(datadir);
+ datadir = NULL;
+ }
+ if (strcasecmp("stdout", value) == 0) {
+ use_stdio = 1;
+ return 0;
+ } else if (strcasecmp("stderr", value) == 0) {
+ use_stdio = 2;
+ return 0;
+ }
+ datadir = strdup(value);
+ if (datadir != NULL) {
+ int len = strlen(datadir);
+ while ((len > 0) && (datadir[len - 1] == '/')) {
+ len--;
+ datadir[len] = '\0';
+ }
+ if (len <= 0) {
+ free(datadir);
+ datadir = NULL;
+ }
+ }
+ } else if (strcasecmp("StoreRates", key) == 0) {
+ if (IS_TRUE(value))
+ store_rates = 1;
+ else
+ store_rates = 0;
+ } else {
+ return -1;
+ }
+ return 0;
} /* int csv_config */
-static int csv_write (const data_set_t *ds, const value_list_t *vl,
- user_data_t __attribute__((unused)) *user_data)
-{
- struct stat statbuf;
- char filename[512];
- char values[4096];
- FILE *csv;
- int csv_fd;
- struct flock fl = { 0 };
- int status;
-
- if (0 != strcmp (ds->type, vl->type)) {
- ERROR ("csv plugin: DS type does not match value list type");
- return -1;
- }
-
- status = value_list_to_filename (filename, sizeof (filename), vl);
- if (status != 0)
- return (-1);
-
- DEBUG ("csv plugin: csv_write: filename = %s;", filename);
-
- if (value_list_to_string (values, sizeof (values), ds, vl) != 0)
- return (-1);
-
- if (use_stdio)
- {
- escape_string (filename, sizeof (filename));
-
- /* Replace commas by colons for PUTVAL compatible output. */
- for (size_t i = 0; i < sizeof (values); i++)
- {
- if (values[i] == 0)
- break;
- else if (values[i] == ',')
- values[i] = ':';
- }
-
- fprintf (use_stdio == 1 ? stdout : stderr,
- "PUTVAL %s interval=%.3f %s\n",
- filename,
- CDTIME_T_TO_DOUBLE (vl->interval),
- values);
- return (0);
- }
-
- if (stat (filename, &statbuf) == -1)
- {
- if (errno == ENOENT)
- {
- if (csv_create_file (filename, ds))
- return (-1);
- }
- else
- {
- char errbuf[1024];
- ERROR ("stat(%s) failed: %s", filename,
- sstrerror (errno, errbuf,
- sizeof (errbuf)));
- return (-1);
- }
- }
- else if (!S_ISREG (statbuf.st_mode))
- {
- ERROR ("stat(%s): Not a regular file!",
- filename);
- return (-1);
- }
-
- csv = fopen (filename, "a");
- if (csv == NULL)
- {
- char errbuf[1024];
- ERROR ("csv plugin: fopen (%s) failed: %s", filename,
- sstrerror (errno, errbuf, sizeof (errbuf)));
- return (-1);
- }
- csv_fd = fileno (csv);
-
- fl.l_pid = getpid ();
- fl.l_type = F_WRLCK;
- fl.l_whence = SEEK_SET;
-
- status = fcntl (csv_fd, F_SETLK, &fl);
- if (status != 0)
- {
- char errbuf[1024];
- ERROR ("csv plugin: flock (%s) failed: %s", filename,
- sstrerror (errno, errbuf, sizeof (errbuf)));
- fclose (csv);
- return (-1);
- }
-
- fprintf (csv, "%s\n", values);
-
- /* The lock is implicitely released. I we don't release it explicitely
- * because the `FILE *' may need to flush a cache first */
- fclose (csv);
-
- return (0);
+static int csv_write(const data_set_t *ds, const value_list_t *vl,
+ user_data_t __attribute__((unused)) * user_data) {
+ struct stat statbuf;
+ char filename[512];
+ char values[4096];
+ FILE *csv;
+ int csv_fd;
+ struct flock fl = {0};
+ int status;
+
+ if (0 != strcmp(ds->type, vl->type)) {
+ ERROR("csv plugin: DS type does not match value list type");
+ return -1;
+ }
+
+ status = value_list_to_filename(filename, sizeof(filename), vl);
+ if (status != 0)
+ return -1;
+
+ DEBUG("csv plugin: csv_write: filename = %s;", filename);
+
+ if (value_list_to_string(values, sizeof(values), ds, vl) != 0)
+ return -1;
+
+ if (use_stdio) {
+ escape_string(filename, sizeof(filename));
+
+ /* Replace commas by colons for PUTVAL compatible output. */
+ for (size_t i = 0; i < sizeof(values); i++) {
+ if (values[i] == 0)
+ break;
+ else if (values[i] == ',')
+ values[i] = ':';
+ }
+
+ fprintf(use_stdio == 1 ? stdout : stderr, "PUTVAL %s interval=%.3f %s\n",
+ filename, CDTIME_T_TO_DOUBLE(vl->interval), values);
+ return 0;
+ }
+
+ if (stat(filename, &statbuf) == -1) {
+ if (errno == ENOENT) {
+ if (csv_create_file(filename, ds))
+ return -1;
+ } else {
+ ERROR("stat(%s) failed: %s", filename, STRERRNO);
+ return -1;
+ }
+ } else if (!S_ISREG(statbuf.st_mode)) {
+ ERROR("stat(%s): Not a regular file!", filename);
+ return -1;
+ }
+
+ csv = fopen(filename, "a");
+ if (csv == NULL) {
+ ERROR("csv plugin: fopen (%s) failed: %s", filename, STRERRNO);
+ return -1;
+ }
+ csv_fd = fileno(csv);
+
+ fl.l_pid = getpid();
+ fl.l_type = F_WRLCK;
+ fl.l_whence = SEEK_SET;
+
+ status = fcntl(csv_fd, F_SETLK, &fl);
+ if (status != 0) {
+ ERROR("csv plugin: flock (%s) failed: %s", filename, STRERRNO);
+ fclose(csv);
+ return -1;
+ }
+
+ fprintf(csv, "%s\n", values);
+
+ /* The lock is implicitely released. I we don't release it explicitely
+ * because the `FILE *' may need to flush a cache first */
+ fclose(csv);
+
+ return 0;
} /* int csv_write */
-void module_register (void)
-{
- plugin_register_config ("csv", csv_config,
- config_keys, config_keys_num);
- plugin_register_write ("csv", csv_write, /* user_data = */ NULL);
+void module_register(void) {
+ plugin_register_config("csv", csv_config, config_keys, config_keys_num);
+ plugin_register_write("csv", csv_write, /* user_data = */ NULL);
} /* void module_register */
projects / collectd.git / blobdiff