1 files changed, 150 insertions, 0 deletions
diff --git a/database/rrd.c b/database/rrd.c
new file mode 100644
index 00000000..119efa62
--- /dev/null
+++ b/database/rrd.c
@@ -0,0 +1,150 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+#define NETDATA_RRD_INTERNALS 1
+
+#include "rrd.h"
+
+// ----------------------------------------------------------------------------
+// globals
+
+/*
+// if not zero it gives the time (in seconds) to remove un-updated dimensions
+// DO NOT ENABLE
+// if dimensions are removed, the chart generation will have to run again
+int rrd_delete_unupdated_dimensions = 0;
+*/
+
+int default_rrd_update_every = UPDATE_EVERY;
+int default_rrd_history_entries = RRD_DEFAULT_HISTORY_ENTRIES;
+RRD_MEMORY_MODE default_rrd_memory_mode = RRD_MEMORY_MODE_SAVE;
+int gap_when_lost_iterations_above = 1;
+
+
+// ----------------------------------------------------------------------------
+// RRD - memory modes
+
+inline const char *rrd_memory_mode_name(RRD_MEMORY_MODE id) {
+    switch(id) {
+        case RRD_MEMORY_MODE_RAM:
+            return RRD_MEMORY_MODE_RAM_NAME;
+
+        case RRD_MEMORY_MODE_MAP:
+            return RRD_MEMORY_MODE_MAP_NAME;
+
+        case RRD_MEMORY_MODE_NONE:
+            return RRD_MEMORY_MODE_NONE_NAME;
+
+        case RRD_MEMORY_MODE_SAVE:
+            return RRD_MEMORY_MODE_SAVE_NAME;
+
+        case RRD_MEMORY_MODE_ALLOC:
+            return RRD_MEMORY_MODE_ALLOC_NAME;
+    }
+
+    return RRD_MEMORY_MODE_SAVE_NAME;
+}
+
+RRD_MEMORY_MODE rrd_memory_mode_id(const char *name) {
+    if(unlikely(!strcmp(name, RRD_MEMORY_MODE_RAM_NAME)))
+        return RRD_MEMORY_MODE_RAM;
+
+    else if(unlikely(!strcmp(name, RRD_MEMORY_MODE_MAP_NAME)))
+        return RRD_MEMORY_MODE_MAP;
+
+    else if(unlikely(!strcmp(name, RRD_MEMORY_MODE_NONE_NAME)))
+        return RRD_MEMORY_MODE_NONE;
+
+    else if(unlikely(!strcmp(name, RRD_MEMORY_MODE_ALLOC_NAME)))
+        return RRD_MEMORY_MODE_ALLOC;
+
+    return RRD_MEMORY_MODE_SAVE;
+}
+
+
+// ----------------------------------------------------------------------------
+// RRD - algorithms types
+
+RRD_ALGORITHM rrd_algorithm_id(const char *name) {
+    if(strcmp(name, RRD_ALGORITHM_INCREMENTAL_NAME) == 0)
+        return RRD_ALGORITHM_INCREMENTAL;
+
+    else if(strcmp(name, RRD_ALGORITHM_ABSOLUTE_NAME) == 0)
+        return RRD_ALGORITHM_ABSOLUTE;
+
+    else if(strcmp(name, RRD_ALGORITHM_PCENT_OVER_ROW_TOTAL_NAME) == 0)
+        return RRD_ALGORITHM_PCENT_OVER_ROW_TOTAL;
+
+    else if(strcmp(name, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL_NAME) == 0)
+        return RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL;
+
+    else
+        return RRD_ALGORITHM_ABSOLUTE;
+}
+
+const char *rrd_algorithm_name(RRD_ALGORITHM algorithm) {
+    switch(algorithm) {
+        case RRD_ALGORITHM_ABSOLUTE:
+        default:
+            return RRD_ALGORITHM_ABSOLUTE_NAME;
+
+        case RRD_ALGORITHM_INCREMENTAL:
+            return RRD_ALGORITHM_INCREMENTAL_NAME;
+
+        case RRD_ALGORITHM_PCENT_OVER_ROW_TOTAL:
+            return RRD_ALGORITHM_PCENT_OVER_ROW_TOTAL_NAME;
+
+        case RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL:
+            return RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL_NAME;
+    }
+}
+
+
+// ----------------------------------------------------------------------------
+// RRD - chart types
+
+inline RRDSET_TYPE rrdset_type_id(const char *name) {
+    if(unlikely(strcmp(name, RRDSET_TYPE_AREA_NAME) == 0))
+        return RRDSET_TYPE_AREA;
+
+    else if(unlikely(strcmp(name, RRDSET_TYPE_STACKED_NAME) == 0))
+        return RRDSET_TYPE_STACKED;
+
+    else // if(unlikely(strcmp(name, RRDSET_TYPE_LINE_NAME) == 0))
+        return RRDSET_TYPE_LINE;
+}
+
+const char *rrdset_type_name(RRDSET_TYPE chart_type) {
+    switch(chart_type) {
+        case RRDSET_TYPE_LINE:
+        default:
+            return RRDSET_TYPE_LINE_NAME;
+
+        case RRDSET_TYPE_AREA:
+            return RRDSET_TYPE_AREA_NAME;
+
+        case RRDSET_TYPE_STACKED:
+            return RRDSET_TYPE_STACKED_NAME;
+    }
+}
+
+
+// ----------------------------------------------------------------------------
+// RRD - cache directory
+
+char *rrdset_cache_dir(RRDHOST *host, const char *id, const char *config_section) {
+    char *ret = NULL;
+
+    char b[FILENAME_MAX + 1];
+    char n[FILENAME_MAX + 1];
+    rrdset_strncpyz_name(b, id, FILENAME_MAX);
+
+    snprintfz(n, FILENAME_MAX, "%s/%s", host->cache_dir, b);
+    ret = config_get(config_section, "cache directory", n);
+
+    if(host->rrd_memory_mode == RRD_MEMORY_MODE_MAP || host->rrd_memory_mode == RRD_MEMORY_MODE_SAVE) {
+        int r = mkdir(ret, 0775);
+        if(r != 0 && errno != EEXIST)
+            error("Cannot create directory '%s'", ret);
+    }
+
+    return ret;
+}