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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 14:31:17 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 14:31:17 +0000
commit8020f71afd34d7696d7933659df2d763ab05542f (patch)
tree2fdf1b5447ffd8bdd61e702ca183e814afdcb4fc /database/engine/rrdenginelib.c
parentInitial commit. (diff)
downloadnetdata-8020f71afd34d7696d7933659df2d763ab05542f.tar.xz
netdata-8020f71afd34d7696d7933659df2d763ab05542f.zip
Adding upstream version 1.37.1.upstream/1.37.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'database/engine/rrdenginelib.c')
-rw-r--r--database/engine/rrdenginelib.c311
1 files changed, 311 insertions, 0 deletions
diff --git a/database/engine/rrdenginelib.c b/database/engine/rrdenginelib.c
new file mode 100644
index 0000000..58bd9c4
--- /dev/null
+++ b/database/engine/rrdenginelib.c
@@ -0,0 +1,311 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+#include "rrdengine.h"
+
+#define BUFSIZE (512)
+
+/* Caller must hold descriptor lock */
+void print_page_cache_descr(struct rrdeng_page_descr *descr, const char *msg, bool log_debug)
+{
+ if(log_debug && !(debug_flags & D_RRDENGINE))
+ return;
+
+ BUFFER *wb = buffer_create(512);
+
+ if(!descr) {
+ buffer_sprintf(wb, "DBENGINE: %s : descr is NULL", msg);
+ }
+ else {
+ struct page_cache_descr *pg_cache_descr = descr->pg_cache_descr;
+ char uuid_str[UUID_STR_LEN];
+
+ uuid_unparse_lower(*descr->id, uuid_str);
+ buffer_sprintf(wb, "DBENGINE: %s : page(%p) metric:%s, len:%"PRIu32", time:%"PRIu64"->%"PRIu64", update_every:%u, type:%u, xt_offset:",
+ msg,
+ pg_cache_descr->page, uuid_str,
+ descr->page_length,
+ (uint64_t)descr->start_time_ut,
+ (uint64_t)descr->end_time_ut,
+ (uint32_t)descr->update_every_s,
+ (uint32_t)descr->type
+ );
+ if (!descr->extent) {
+ buffer_strcat(wb, "N/A");
+ } else {
+ buffer_sprintf(wb, "%"PRIu64, descr->extent->offset);
+ }
+
+ buffer_sprintf(wb, ", flags:0x%2.2lX refcnt:%u", pg_cache_descr->flags, pg_cache_descr->refcnt);
+ }
+
+ if(log_debug)
+ debug(D_RRDENGINE, "%s", buffer_tostring(wb));
+ else
+ internal_error(true, "%s", buffer_tostring(wb));
+
+ buffer_free(wb);
+}
+
+void print_page_descr(struct rrdeng_page_descr *descr)
+{
+ char uuid_str[UUID_STR_LEN];
+ char str[BUFSIZE + 1];
+ int pos = 0;
+
+ uuid_unparse_lower(*descr->id, uuid_str);
+ pos += snprintfz(str, BUFSIZE - pos, "id=%s\n"
+ "--->len:%"PRIu32" time:%"PRIu64"->%"PRIu64" xt_offset:",
+ uuid_str,
+ descr->page_length,
+ (uint64_t)descr->start_time_ut,
+ (uint64_t)descr->end_time_ut);
+ if (!descr->extent) {
+ pos += snprintfz(str + pos, BUFSIZE - pos, "N/A");
+ } else {
+ pos += snprintfz(str + pos, BUFSIZE - pos, "%"PRIu64, descr->extent->offset);
+ }
+ snprintfz(str + pos, BUFSIZE - pos, "\n\n");
+ fputs(str, stderr);
+}
+
+int check_file_properties(uv_file file, uint64_t *file_size, size_t min_size)
+{
+ int ret;
+ uv_fs_t req;
+ uv_stat_t* s;
+
+ ret = uv_fs_fstat(NULL, &req, file, NULL);
+ if (ret < 0) {
+ fatal("uv_fs_fstat: %s\n", uv_strerror(ret));
+ }
+ fatal_assert(req.result == 0);
+ s = req.ptr;
+ if (!(s->st_mode & S_IFREG)) {
+ error("Not a regular file.\n");
+ uv_fs_req_cleanup(&req);
+ return UV_EINVAL;
+ }
+ if (s->st_size < min_size) {
+ error("File length is too short.\n");
+ uv_fs_req_cleanup(&req);
+ return UV_EINVAL;
+ }
+ *file_size = s->st_size;
+ uv_fs_req_cleanup(&req);
+
+ return 0;
+}
+
+/**
+ * Open file for I/O.
+ *
+ * @param path The full path of the file.
+ * @param flags Same flags as the open() system call uses.
+ * @param file On success sets (*file) to be the uv_file that was opened.
+ * @param direct Tries to open a file in direct I/O mode when direct=1, falls back to buffered mode if not possible.
+ * @return Returns UV error number that is < 0 on failure. 0 on success.
+ */
+int open_file_for_io(char *path, int flags, uv_file *file, int direct)
+{
+ uv_fs_t req;
+ int fd = -1, current_flags;
+
+ fatal_assert(0 == direct || 1 == direct);
+ for ( ; direct >= 0 ; --direct) {
+#ifdef __APPLE__
+ /* Apple OS does not support O_DIRECT */
+ direct = 0;
+#endif
+ current_flags = flags;
+ if (direct) {
+ current_flags |= O_DIRECT;
+ }
+ fd = uv_fs_open(NULL, &req, path, current_flags, S_IRUSR | S_IWUSR, NULL);
+ if (fd < 0) {
+ if ((direct) && (UV_EINVAL == fd)) {
+ error("File \"%s\" does not support direct I/O, falling back to buffered I/O.", path);
+ } else {
+ error("Failed to open file \"%s\".", path);
+ --direct; /* break the loop */
+ }
+ } else {
+ fatal_assert(req.result >= 0);
+ *file = req.result;
+#ifdef __APPLE__
+ info("Disabling OS X caching for file \"%s\".", path);
+ fcntl(fd, F_NOCACHE, 1);
+#endif
+ --direct; /* break the loop */
+ }
+ uv_fs_req_cleanup(&req);
+ }
+
+ return fd;
+}
+
+char *get_rrdeng_statistics(struct rrdengine_instance *ctx, char *str, size_t size)
+{
+ struct page_cache *pg_cache;
+
+ pg_cache = &ctx->pg_cache;
+ snprintfz(str, size,
+ "metric_API_producers: %ld\n"
+ "metric_API_consumers: %ld\n"
+ "page_cache_total_pages: %ld\n"
+ "page_cache_descriptors: %ld\n"
+ "page_cache_populated_pages: %ld\n"
+ "page_cache_committed_pages: %ld\n"
+ "page_cache_insertions: %ld\n"
+ "page_cache_deletions: %ld\n"
+ "page_cache_hits: %ld\n"
+ "page_cache_misses: %ld\n"
+ "page_cache_backfills: %ld\n"
+ "page_cache_evictions: %ld\n"
+ "compress_before_bytes: %ld\n"
+ "compress_after_bytes: %ld\n"
+ "decompress_before_bytes: %ld\n"
+ "decompress_after_bytes: %ld\n"
+ "io_write_bytes: %ld\n"
+ "io_write_requests: %ld\n"
+ "io_read_bytes: %ld\n"
+ "io_read_requests: %ld\n"
+ "io_write_extent_bytes: %ld\n"
+ "io_write_extents: %ld\n"
+ "io_read_extent_bytes: %ld\n"
+ "io_read_extents: %ld\n"
+ "datafile_creations: %ld\n"
+ "datafile_deletions: %ld\n"
+ "journalfile_creations: %ld\n"
+ "journalfile_deletions: %ld\n"
+ "io_errors: %ld\n"
+ "fs_errors: %ld\n"
+ "global_io_errors: %ld\n"
+ "global_fs_errors: %ld\n"
+ "rrdeng_reserved_file_descriptors: %ld\n"
+ "pg_cache_over_half_dirty_events: %ld\n"
+ "global_pg_cache_over_half_dirty_events: %ld\n"
+ "flushing_pressure_page_deletions: %ld\n"
+ "global_flushing_pressure_page_deletions: %ld\n",
+ (long)ctx->stats.metric_API_producers,
+ (long)ctx->stats.metric_API_consumers,
+ (long)pg_cache->page_descriptors,
+ (long)ctx->stats.page_cache_descriptors,
+ (long)pg_cache->populated_pages,
+ (long)pg_cache->committed_page_index.nr_committed_pages,
+ (long)ctx->stats.pg_cache_insertions,
+ (long)ctx->stats.pg_cache_deletions,
+ (long)ctx->stats.pg_cache_hits,
+ (long)ctx->stats.pg_cache_misses,
+ (long)ctx->stats.pg_cache_backfills,
+ (long)ctx->stats.pg_cache_evictions,
+ (long)ctx->stats.before_compress_bytes,
+ (long)ctx->stats.after_compress_bytes,
+ (long)ctx->stats.before_decompress_bytes,
+ (long)ctx->stats.after_decompress_bytes,
+ (long)ctx->stats.io_write_bytes,
+ (long)ctx->stats.io_write_requests,
+ (long)ctx->stats.io_read_bytes,
+ (long)ctx->stats.io_read_requests,
+ (long)ctx->stats.io_write_extent_bytes,
+ (long)ctx->stats.io_write_extents,
+ (long)ctx->stats.io_read_extent_bytes,
+ (long)ctx->stats.io_read_extents,
+ (long)ctx->stats.datafile_creations,
+ (long)ctx->stats.datafile_deletions,
+ (long)ctx->stats.journalfile_creations,
+ (long)ctx->stats.journalfile_deletions,
+ (long)ctx->stats.io_errors,
+ (long)ctx->stats.fs_errors,
+ (long)global_io_errors,
+ (long)global_fs_errors,
+ (long)rrdeng_reserved_file_descriptors,
+ (long)ctx->stats.pg_cache_over_half_dirty_events,
+ (long)global_pg_cache_over_half_dirty_events,
+ (long)ctx->stats.flushing_pressure_page_deletions,
+ (long)global_flushing_pressure_page_deletions
+ );
+ return str;
+}
+
+int is_legacy_child(const char *machine_guid)
+{
+ uuid_t uuid;
+ char dbengine_file[FILENAME_MAX+1];
+
+ if (unlikely(!strcmp(machine_guid, "unittest-dbengine") || !strcmp(machine_guid, "dbengine-dataset") ||
+ !strcmp(machine_guid, "dbengine-stress-test"))) {
+ return 1;
+ }
+ if (!uuid_parse(machine_guid, uuid)) {
+ uv_fs_t stat_req;
+ snprintfz(dbengine_file, FILENAME_MAX, "%s/%s/dbengine", netdata_configured_cache_dir, machine_guid);
+ int rc = uv_fs_stat(NULL, &stat_req, dbengine_file, NULL);
+ if (likely(rc == 0 && ((stat_req.statbuf.st_mode & S_IFMT) == S_IFDIR))) {
+ //info("Found legacy engine folder \"%s\"", dbengine_file);
+ return 1;
+ }
+ }
+ return 0;
+}
+
+int count_legacy_children(char *dbfiles_path)
+{
+ int ret;
+ uv_fs_t req;
+ uv_dirent_t dent;
+ int legacy_engines = 0;
+
+ ret = uv_fs_scandir(NULL, &req, dbfiles_path, 0, NULL);
+ if (ret < 0) {
+ uv_fs_req_cleanup(&req);
+ error("uv_fs_scandir(%s): %s", dbfiles_path, uv_strerror(ret));
+ return ret;
+ }
+
+ while(UV_EOF != uv_fs_scandir_next(&req, &dent)) {
+ if (dent.type == UV_DIRENT_DIR) {
+ if (is_legacy_child(dent.name))
+ legacy_engines++;
+ }
+ }
+ uv_fs_req_cleanup(&req);
+ return legacy_engines;
+}
+
+int compute_multidb_diskspace()
+{
+ char multidb_disk_space_file[FILENAME_MAX + 1];
+ FILE *fp;
+ int computed_multidb_disk_quota_mb = -1;
+
+ snprintfz(multidb_disk_space_file, FILENAME_MAX, "%s/dbengine_multihost_size", netdata_configured_varlib_dir);
+ fp = fopen(multidb_disk_space_file, "r");
+ if (likely(fp)) {
+ int rc = fscanf(fp, "%d", &computed_multidb_disk_quota_mb);
+ fclose(fp);
+ if (unlikely(rc != 1 || computed_multidb_disk_quota_mb < RRDENG_MIN_DISK_SPACE_MB)) {
+ errno = 0;
+ error("File '%s' contains invalid input, it will be rebuild", multidb_disk_space_file);
+ computed_multidb_disk_quota_mb = -1;
+ }
+ }
+
+ if (computed_multidb_disk_quota_mb == -1) {
+ int rc = count_legacy_children(netdata_configured_cache_dir);
+ if (likely(rc >= 0)) {
+ computed_multidb_disk_quota_mb = (rc + 1) * default_rrdeng_disk_quota_mb;
+ info("Found %d legacy dbengines, setting multidb diskspace to %dMB", rc, computed_multidb_disk_quota_mb);
+
+ fp = fopen(multidb_disk_space_file, "w");
+ if (likely(fp)) {
+ fprintf(fp, "%d", computed_multidb_disk_quota_mb);
+ info("Created file '%s' to store the computed value", multidb_disk_space_file);
+ fclose(fp);
+ } else
+ error("Failed to store the default multidb disk quota size on '%s'", multidb_disk_space_file);
+ }
+ else
+ computed_multidb_disk_quota_mb = default_rrdeng_disk_quota_mb;
+ }
+
+ return computed_multidb_disk_quota_mb;
+}