Merging upstream version 1.11.0+dfsg.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 0 insertions, 479 deletions

diff --git a/src/backend_prometheus.c b/src/backend_prometheus.c
deleted file mode 100644
index bfcda9297..000000000
--- a/src/backend_prometheus.c
+++ /dev/null
@@ -1,479 +0,0 @@
-#include "common.h"
-
-// ----------------------------------------------------------------------------
-// PROMETHEUS
-// /api/v1/allmetrics?format=prometheus and /api/v1/allmetrics?format=prometheus_all_hosts
-
-static struct prometheus_server {
-    const char *server;
-    uint32_t hash;
-    RRDHOST *host;
-    time_t last_access;
-    struct prometheus_server *next;
-} *prometheus_server_root = NULL;
-
-static inline time_t prometheus_server_last_access(const char *server, RRDHOST *host, time_t now) {
-    static netdata_mutex_t prometheus_server_root_mutex = NETDATA_MUTEX_INITIALIZER;
-
-    uint32_t hash = simple_hash(server);
-
-    netdata_mutex_lock(&prometheus_server_root_mutex);
-
-    struct prometheus_server *ps;
-    for(ps = prometheus_server_root; ps ;ps = ps->next) {
-        if (host == ps->host && hash == ps->hash && !strcmp(server, ps->server)) {
-            time_t last = ps->last_access;
-            ps->last_access = now;
-            netdata_mutex_unlock(&prometheus_server_root_mutex);
-            return last;
-        }
-    }
-
-    ps = callocz(1, sizeof(struct prometheus_server));
-    ps->server = strdupz(server);
-    ps->hash = hash;
-    ps->host = host;
-    ps->last_access = now;
-    ps->next = prometheus_server_root;
-    prometheus_server_root = ps;
-
-    netdata_mutex_unlock(&prometheus_server_root_mutex);
-    return 0;
-}
-
-static inline size_t prometheus_name_copy(char *d, const char *s, size_t usable) {
-    size_t n;
-
-    for(n = 0; *s && n < usable ; d++, s++, n++) {
-        register char c = *s;
-
-        if(!isalnum(c)) *d = '_';
-        else *d = c;
-    }
-    *d = '\0';
-
-    return n;
-}
-
-static inline size_t prometheus_label_copy(char *d, const char *s, size_t usable) {
-    size_t n;
-
-    // make sure we can escape one character without overflowing the buffer
-    usable--;
-
-    for(n = 0; *s && n < usable ; d++, s++, n++) {
-        register char c = *s;
-
-        if(unlikely(c == '"' || c == '\\' || c == '\n')) {
-            *d++ = '\\';
-            n++;
-        }
-        *d = c;
-    }
-    *d = '\0';
-
-    return n;
-}
-
-static inline char *prometheus_units_copy(char *d, const char *s, size_t usable) {
-    const char *sorig = s;
-    char *ret = d;
-    size_t n;
-
-    *d++ = '_';
-    for(n = 1; *s && n < usable ; d++, s++, n++) {
-        register char c = *s;
-
-        if(!isalnum(c)) *d = '_';
-        else *d = c;
-    }
-
-    if(n == 2 && sorig[0] == '%') {
-        n = 0;
-        d = ret;
-        s = "_percent";
-        for( ; *s && n < usable ; n++) *d++ = *s++;
-    }
-    else if(n > 3 && sorig[n-3] == '/' && sorig[n-2] == 's') {
-        n = n - 2;
-        d -= 2;
-        s = "_persec";
-        for( ; *s && n < usable ; n++) *d++ = *s++;
-    }
-
-    *d = '\0';
-
-    return ret;
-}
-
-
-#define PROMETHEUS_ELEMENT_MAX 256
-#define PROMETHEUS_LABELS_MAX 1024
-
-static void rrd_stats_api_v1_charts_allmetrics_prometheus(RRDHOST *host, BUFFER *wb, const char *prefix, uint32_t options, time_t after, time_t before, int allhosts, int help, int types, int names, int timestamps) {
-    rrdhost_rdlock(host);
-
-    char hostname[PROMETHEUS_ELEMENT_MAX + 1];
-    prometheus_label_copy(hostname, host->hostname, PROMETHEUS_ELEMENT_MAX);
-
-    char labels[PROMETHEUS_LABELS_MAX + 1] = "";
-    if(allhosts) {
-        if(timestamps)
-            buffer_sprintf(wb, "netdata_info{instance=\"%s\",application=\"%s\",version=\"%s\"} 1 %llu\n", hostname, host->program_name, host->program_version, now_realtime_usec() / USEC_PER_MS);
-        else
-            buffer_sprintf(wb, "netdata_info{instance=\"%s\",application=\"%s\",version=\"%s\"} 1\n", hostname, host->program_name, host->program_version);
-
-        if(host->tags && *(host->tags)) {
-            if(timestamps) {
-                buffer_sprintf(wb, "netdata_host_tags_info{instance=\"%s\",%s} 1 %llu\n", hostname, host->tags, now_realtime_usec() / USEC_PER_MS);
-
-                // deprecated, exists only for compatibility with older queries
-                buffer_sprintf(wb, "netdata_host_tags{instance=\"%s\",%s} 1 %llu\n", hostname, host->tags, now_realtime_usec() / USEC_PER_MS);
-            }
-            else {
-                buffer_sprintf(wb, "netdata_host_tags_info{instance=\"%s\",%s} 1\n", hostname, host->tags);
-
-                // deprecated, exists only for compatibility with older queries
-                buffer_sprintf(wb, "netdata_host_tags{instance=\"%s\",%s} 1\n", hostname, host->tags);
-            }
-
-        }
-
-        snprintfz(labels, PROMETHEUS_LABELS_MAX, ",instance=\"%s\"", hostname);
-    }
-    else {
-        if(timestamps)
-            buffer_sprintf(wb, "netdata_info{instance=\"%s\",application=\"%s\",version=\"%s\"} 1 %llu\n", hostname, host->program_name, host->program_version, now_realtime_usec() / USEC_PER_MS);
-        else
-            buffer_sprintf(wb, "netdata_info{instance=\"%s\",application=\"%s\",version=\"%s\"} 1\n", hostname, host->program_name, host->program_version);
-
-        if(host->tags && *(host->tags)) {
-            if(timestamps) {
-                buffer_sprintf(wb, "netdata_host_tags_info{%s} 1 %llu\n", host->tags, now_realtime_usec() / USEC_PER_MS);
-
-                // deprecated, exists only for compatibility with older queries
-                buffer_sprintf(wb, "netdata_host_tags{%s} 1 %llu\n", host->tags, now_realtime_usec() / USEC_PER_MS);
-            }
-            else {
-                buffer_sprintf(wb, "netdata_host_tags_info{%s} 1\n", host->tags);
-
-                // deprecated, exists only for compatibility with older queries
-                buffer_sprintf(wb, "netdata_host_tags{%s} 1\n", host->tags);
-            }
-        }
-    }
-
-    // for each chart
-    RRDSET *st;
-    rrdset_foreach_read(st, host) {
-        char chart[PROMETHEUS_ELEMENT_MAX + 1];
-        char context[PROMETHEUS_ELEMENT_MAX + 1];
-        char family[PROMETHEUS_ELEMENT_MAX + 1];
-        char units[PROMETHEUS_ELEMENT_MAX + 1] = "";
-
-        prometheus_label_copy(chart, (names && st->name)?st->name:st->id, PROMETHEUS_ELEMENT_MAX);
-        prometheus_label_copy(family, st->family, PROMETHEUS_ELEMENT_MAX);
-        prometheus_name_copy(context, st->context, PROMETHEUS_ELEMENT_MAX);
-
-        if(likely(backends_can_send_rrdset(options, st))) {
-            rrdset_rdlock(st);
-
-            int as_collected = ((options & BACKEND_SOURCE_BITS) == BACKEND_SOURCE_DATA_AS_COLLECTED);
-            int homogeneus = 1;
-            if(as_collected) {
-                if(rrdset_flag_check(st, RRDSET_FLAG_HOMEGENEOUS_CHECK))
-                    rrdset_update_heterogeneous_flag(st);
-
-                if(rrdset_flag_check(st, RRDSET_FLAG_HETEROGENEOUS))
-                    homogeneus = 0;
-            }
-            else {
-                if((options & BACKEND_SOURCE_BITS) == BACKEND_SOURCE_DATA_AVERAGE)
-                    prometheus_units_copy(units, st->units, PROMETHEUS_ELEMENT_MAX);
-            }
-
-            if(unlikely(help))
-                buffer_sprintf(wb, "\n# COMMENT %s chart \"%s\", context \"%s\", family \"%s\", units \"%s\"\n"
-                               , (homogeneus)?"homogeneus":"heterogeneous"
-                               , (names && st->name) ? st->name : st->id
-                               , st->context
-                               , st->family
-                               , st->units
-                );
-
-            // for each dimension
-            RRDDIM *rd;
-            rrddim_foreach_read(rd, st) {
-                if(rd->collections_counter) {
-                    char dimension[PROMETHEUS_ELEMENT_MAX + 1];
-                    char *suffix = "";
-
-                    if (as_collected) {
-                        // we need as-collected / raw data
-
-                        const char *t = "gauge", *h = "gives";
-                        if(rd->algorithm == RRD_ALGORITHM_INCREMENTAL ||
-                           rd->algorithm == RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL) {
-                            t = "counter";
-                            h = "delta gives";
-                            suffix = "_total";
-                        }
-
-                        if(homogeneus) {
-                            // all the dimensions of the chart, has the same algorithm, multiplier and divisor
-                            // we add all dimensions as labels
-
-                            prometheus_label_copy(dimension, (names && rd->name) ? rd->name : rd->id, PROMETHEUS_ELEMENT_MAX);
-
-                            if(unlikely(help))
-                                buffer_sprintf(wb
-                                               , "# COMMENT %s_%s%s: chart \"%s\", context \"%s\", family \"%s\", dimension \"%s\", value * " COLLECTED_NUMBER_FORMAT " / " COLLECTED_NUMBER_FORMAT " %s %s (%s)\n"
-                                               , prefix
-                                               , context
-                                               , suffix
-                                               , (names && st->name) ? st->name : st->id
-                                               , st->context
-                                               , st->family
-                                               , (names && rd->name) ? rd->name : rd->id
-                                               , rd->multiplier
-                                               , rd->divisor
-                                               , h
-                                               , st->units
-                                               , t
-                                );
-
-                            if(unlikely(types))
-                                buffer_sprintf(wb, "# COMMENT TYPE %s_%s%s %s\n"
-                                               , prefix
-                                               , context
-                                               , suffix
-                                               , t
-                                );
-
-                            if(timestamps)
-                                buffer_sprintf(wb
-                                               , "%s_%s%s{chart=\"%s\",family=\"%s\",dimension=\"%s\"%s} " COLLECTED_NUMBER_FORMAT " %llu\n"
-                                               , prefix
-                                               , context
-                                               , suffix
-                                               , chart
-                                               , family
-                                               , dimension
-                                               , labels
-                                               , rd->last_collected_value
-                                               , timeval_msec(&rd->last_collected_time)
-                                );
-                            else
-                                buffer_sprintf(wb
-                                               , "%s_%s%s{chart=\"%s\",family=\"%s\",dimension=\"%s\"%s} " COLLECTED_NUMBER_FORMAT "\n"
-                                               , prefix
-                                               , context
-                                               , suffix
-                                               , chart
-                                               , family
-                                               , dimension
-                                               , labels
-                                               , rd->last_collected_value
-                                );
-                        }
-                        else {
-                            // the dimensions of the chart, do not have the same algorithm, multiplier or divisor
-                            // we create a metric per dimension
-
-                            prometheus_name_copy(dimension, (names && rd->name) ? rd->name : rd->id, PROMETHEUS_ELEMENT_MAX);
-
-                            if(unlikely(help))
-                                buffer_sprintf(wb
-                                               , "# COMMENT %s_%s_%s%s: chart \"%s\", context \"%s\", family \"%s\", dimension \"%s\", value * " COLLECTED_NUMBER_FORMAT " / " COLLECTED_NUMBER_FORMAT " %s %s (%s)\n"
-                                               , prefix
-                                               , context
-                                               , dimension
-                                               , suffix
-                                               , (names && st->name) ? st->name : st->id
-                                               , st->context
-                                               , st->family
-                                               , (names && rd->name) ? rd->name : rd->id
-                                               , rd->multiplier
-                                               , rd->divisor
-                                               , h
-                                               , st->units
-                                               , t
-                                );
-
-                            if(unlikely(types))
-                                buffer_sprintf(wb, "# COMMENT TYPE %s_%s_%s%s %s\n"
-                                               , prefix
-                                               , context
-                                               , dimension
-                                               , suffix
-                                               , t
-                                );
-
-                            if(timestamps)
-                                buffer_sprintf(wb
-                                               , "%s_%s_%s%s{chart=\"%s\",family=\"%s\"%s} " COLLECTED_NUMBER_FORMAT " %llu\n"
-                                               , prefix
-                                               , context
-                                               , dimension
-                                               , suffix
-                                               , chart
-                                               , family
-                                               , labels
-                                               , rd->last_collected_value
-                                               , timeval_msec(&rd->last_collected_time)
-                                );
-                            else
-                                buffer_sprintf(wb
-                                               , "%s_%s_%s%s{chart=\"%s\",family=\"%s\"%s} " COLLECTED_NUMBER_FORMAT "\n"
-                                               , prefix
-                                               , context
-                                               , dimension
-                                               , suffix
-                                               , chart
-                                               , family
-                                               , labels
-                                               , rd->last_collected_value
-                                );
-                        }
-                    }
-                    else {
-                        // we need average or sum of the data
-
-                        time_t first_t = after, last_t = before;
-                        calculated_number value = backend_calculate_value_from_stored_data(st, rd, after, before, options, &first_t, &last_t);
-
-                        if(!isnan(value) && !isinf(value)) {
-
-                            if((options & BACKEND_SOURCE_BITS) == BACKEND_SOURCE_DATA_AVERAGE)
-                                suffix = "_average";
-                            else if((options & BACKEND_SOURCE_BITS) == BACKEND_SOURCE_DATA_SUM)
-                                suffix = "_sum";
-
-                            prometheus_label_copy(dimension, (names && rd->name) ? rd->name : rd->id, PROMETHEUS_ELEMENT_MAX);
-
-                            if (unlikely(help))
-                                buffer_sprintf(wb, "# COMMENT %s_%s%s%s: dimension \"%s\", value is %s, gauge, dt %llu to %llu inclusive\n"
-                                               , prefix
-                                               , context
-                                               , units
-                                               , suffix
-                                               , (names && rd->name) ? rd->name : rd->id
-                                               , st->units
-                                               , (unsigned long long)first_t
-                                               , (unsigned long long)last_t
-                                );
-
-                            if (unlikely(types))
-                                buffer_sprintf(wb, "# COMMENT TYPE %s_%s%s%s gauge\n"
-                                               , prefix
-                                               , context
-                                               , units
-                                               , suffix
-                                );
-
-                            if(timestamps)
-                                buffer_sprintf(wb, "%s_%s%s%s{chart=\"%s\",family=\"%s\",dimension=\"%s\"%s} " CALCULATED_NUMBER_FORMAT " %llu\n"
-                                               , prefix
-                                               , context
-                                               , units
-                                               , suffix
-                                               , chart
-                                               , family
-                                               , dimension
-                                               , labels
-                                               , value
-                                               , last_t * MSEC_PER_SEC
-                                );
-                            else
-                                buffer_sprintf(wb, "%s_%s%s%s{chart=\"%s\",family=\"%s\",dimension=\"%s\"%s} " CALCULATED_NUMBER_FORMAT "\n"
-                                               , prefix
-                                               , context
-                                               , units
-                                               , suffix
-                                               , chart
-                                               , family
-                                               , dimension
-                                               , labels
-                                               , value
-                                );
-                        }
-                    }
-                }
-            }
-
-            rrdset_unlock(st);
-        }
-    }
-
-    rrdhost_unlock(host);
-}
-
-static inline time_t prometheus_preparation(RRDHOST *host, BUFFER *wb, uint32_t options, const char *server, time_t now, int help) {
-    if(!server || !*server) server = "default";
-
-    time_t after  = prometheus_server_last_access(server, host, now);
-
-    int first_seen = 0;
-    if(!after) {
-        after = now - backend_update_every;
-        first_seen = 1;
-    }
-
-    if(after > now) {
-        // oops! this should never happen
-        after = now - backend_update_every;
-    }
-
-    if(help) {
-        int show_range = 1;
-        char *mode;
-        if((options & BACKEND_SOURCE_BITS) == BACKEND_SOURCE_DATA_AS_COLLECTED) {
-            mode = "as collected";
-            show_range = 0;
-        }
-        else if((options & BACKEND_SOURCE_BITS) == BACKEND_SOURCE_DATA_AVERAGE)
-            mode = "average";
-        else if((options & BACKEND_SOURCE_BITS) == BACKEND_SOURCE_DATA_SUM)
-            mode = "sum";
-        else
-            mode = "unknown";
-
-        buffer_sprintf(wb, "# COMMENT netdata \"%s\" to %sprometheus \"%s\", source \"%s\", last seen %lu %s"
-                , host->hostname
-                , (first_seen)?"FIRST SEEN ":""
-                , server
-                , mode
-                , (unsigned long)((first_seen)?0:(now - after))
-                , (first_seen)?"never":"seconds ago"
-        );
-
-        if(show_range)
-            buffer_sprintf(wb, ", time range %lu to %lu", (unsigned long)after, (unsigned long)now);
-
-        buffer_strcat(wb, "\n\n");
-    }
-
-    return after;
-}
-
-void rrd_stats_api_v1_charts_allmetrics_prometheus_single_host(RRDHOST *host, BUFFER *wb, const char *server, const char *prefix, uint32_t options, int help, int types, int names, int timestamps) {
-    time_t before = now_realtime_sec();
-
-    // we start at the point we had stopped before
-    time_t after = prometheus_preparation(host, wb, options, server, before, help);
-
-    rrd_stats_api_v1_charts_allmetrics_prometheus(host, wb, prefix, options, after, before, 0, help, types, names, timestamps);
-}
-
-void rrd_stats_api_v1_charts_allmetrics_prometheus_all_hosts(RRDHOST *host, BUFFER *wb, const char *server, const char *prefix, uint32_t options, int help, int types, int names, int timestamps) {
-    time_t before = now_realtime_sec();
-
-    // we start at the point we had stopped before
-    time_t after = prometheus_preparation(host, wb, options, server, before, help);
-
-    rrd_rdlock();
-    rrdhost_foreach_read(host) {
-        rrd_stats_api_v1_charts_allmetrics_prometheus(host, wb, prefix, options, after, before, 1, help, types, names, timestamps);
-    }
-    rrd_unlock();
-}