-#include <sys/time.h>
-#include <pthread.h>
-
-#include "storage_number.h"
-
#ifndef NETDATA_RRD_H
#define NETDATA_RRD_H 1
#define UPDATE_EVERY 1
#define UPDATE_EVERY_MAX 3600
-extern int update_every;
-
-#define HISTORY 3600
-#define HISTORY_MAX (86400*10)
-extern int save_history;
+extern int rrd_update_every;
-typedef long long total_number;
+#define RRD_DEFAULT_HISTORY_ENTRIES 3600
+#define RRD_HISTORY_ENTRIES_MAX (86400*10)
+extern int rrd_default_history_entries;
-#define TOTAL_NUMBER_FORMAT "%lld"
+// time in seconds to delete unupdated dimensions
+// set to zero to disable this feature
+extern int rrd_delete_unupdated_dimensions;
-#define RRD_STATS_NAME_MAX 1024
+#define RRD_ID_LENGTH_MAX 1024
-#define RRD_STATS_MAGIC "NETDATA CACHE STATS FILE V009"
-#define RRD_DIMENSION_MAGIC "NETDATA CACHE DIMENSION FILE V009"
+#define RRDSET_MAGIC "NETDATA RRD SET FILE V018"
+#define RRDDIMENSION_MAGIC "NETDATA RRD DIMENSION FILE V018"
+typedef long long total_number;
+#define TOTAL_NUMBER_FORMAT "%lld"
// ----------------------------------------------------------------------------
// chart types
-#define CHART_TYPE_LINE_NAME "line"
-#define CHART_TYPE_AREA_NAME "area"
-#define CHART_TYPE_STACKED_NAME "stacked"
+#define RRDSET_TYPE_LINE_NAME "line"
+#define RRDSET_TYPE_AREA_NAME "area"
+#define RRDSET_TYPE_STACKED_NAME "stacked"
-#define CHART_TYPE_LINE 0
-#define CHART_TYPE_AREA 1
-#define CHART_TYPE_STACKED 2
+#define RRDSET_TYPE_LINE 0
+#define RRDSET_TYPE_AREA 1
+#define RRDSET_TYPE_STACKED 2
-int chart_type_id(const char *name);
-const char *chart_type_name(int chart_type);
+int rrdset_type_id(const char *name);
+const char *rrdset_type_name(int chart_type);
// ----------------------------------------------------------------------------
// memory mode
-#define NETDATA_MEMORY_MODE_RAM_NAME "ram"
-#define NETDATA_MEMORY_MODE_MAP_NAME "map"
-#define NETDATA_MEMORY_MODE_SAVE_NAME "save"
+#define RRD_MEMORY_MODE_RAM_NAME "ram"
+#define RRD_MEMORY_MODE_MAP_NAME "map"
+#define RRD_MEMORY_MODE_SAVE_NAME "save"
-#define NETDATA_MEMORY_MODE_RAM 0
-#define NETDATA_MEMORY_MODE_MAP 1
-#define NETDATA_MEMORY_MODE_SAVE 2
+#define RRD_MEMORY_MODE_RAM 0
+#define RRD_MEMORY_MODE_MAP 1
+#define RRD_MEMORY_MODE_SAVE 2
-extern int memory_mode;
+extern int rrd_memory_mode;
-extern const char *memory_mode_name(int id);
-extern int memory_mode_id(const char *name);
+extern const char *rrd_memory_mode_name(int id);
+extern int rrd_memory_mode_id(const char *name);
// ----------------------------------------------------------------------------
// algorithms types
-#define RRD_DIMENSION_ABSOLUTE_NAME "absolute"
-#define RRD_DIMENSION_INCREMENTAL_NAME "incremental"
-#define RRD_DIMENSION_PCENT_OVER_DIFF_TOTAL_NAME "percentage-of-incremental-row"
-#define RRD_DIMENSION_PCENT_OVER_ROW_TOTAL_NAME "percentage-of-absolute-row"
+#define RRDDIM_ABSOLUTE_NAME "absolute"
+#define RRDDIM_INCREMENTAL_NAME "incremental"
+#define RRDDIM_PCENT_OVER_DIFF_TOTAL_NAME "percentage-of-incremental-row"
+#define RRDDIM_PCENT_OVER_ROW_TOTAL_NAME "percentage-of-absolute-row"
+
+#define RRDDIM_ABSOLUTE 0
+#define RRDDIM_INCREMENTAL 1
+#define RRDDIM_PCENT_OVER_DIFF_TOTAL 2
+#define RRDDIM_PCENT_OVER_ROW_TOTAL 3
+
+extern int rrddim_algorithm_id(const char *name);
+extern const char *rrddim_algorithm_name(int chart_type);
+
+// ----------------------------------------------------------------------------
+// flags
+
+#define RRDDIM_FLAG_HIDDEN 0x00000001 // this dimension will not be offered to callers
+#define RRDDIM_FLAG_DONT_DETECT_RESETS_OR_OVERFLOWS 0x00000002 // do not offer RESET or OVERFLOW info to callers
+
+// ----------------------------------------------------------------------------
+// RRD CONTEXT
+
+struct rrdcontext {
+ avl avl;
+
+ const char *id;
+ uint32_t hash;
+
+ size_t use_count;
+
+ avl_tree_lock variables_root_index;
+};
+typedef struct rrdcontext RRDCONTEXT;
+
+// ----------------------------------------------------------------------------
+// RRD DIMENSION
+
+struct rrddim {
+ // ------------------------------------------------------------------------
+ // binary indexing structures
-#define RRD_DIMENSION_ABSOLUTE 0
-#define RRD_DIMENSION_INCREMENTAL 1
-#define RRD_DIMENSION_PCENT_OVER_DIFF_TOTAL 2
-#define RRD_DIMENSION_PCENT_OVER_ROW_TOTAL 3
+ avl avl; // the binary index - this has to be first member!
-extern int algorithm_id(const char *name);
-extern const char *algorithm_name(int chart_type);
+ // ------------------------------------------------------------------------
+ // the dimension definition
-struct rrd_dimension {
- char magic[sizeof(RRD_DIMENSION_MAGIC) + 1]; // our magic
- char id[RRD_STATS_NAME_MAX + 1]; // the id of this dimension (for internal identification)
- char *name; // the name of this dimension (as presented to user)
- char cache_file[FILENAME_MAX+1];
-
- unsigned long hash; // a simple hash on the id, to speed up searching
- // we first compare hashes, and only if the hashes are equal we do string comparisons
+ char id[RRD_ID_LENGTH_MAX + 1]; // the id of this dimension (for internal identification)
- long entries; // how many entries this dimension has
- // this should be the same to the entries of the data set
+ const char *name; // the name of this dimension (as presented to user)
+ // this is a pointer to the config structure
+ // since the config always has a higher priority
+ // (the user overwrites the name of the charts)
- long current_entry; // the entry that is currently being updated
- int update_every; // every how many seconds is this updated?
+ int algorithm; // the algorithm that is applied to add new collected values
+ long multiplier; // the multiplier of the collected values
+ long divisor; // the divider of the collected values
- int hidden; // if set to non zero, this dimension will not be sent to the client
- int mapped; // 1 if the file is mapped
- unsigned long memsize; // the memory allocated for this dimension
+ int mapped; // if set to non zero, this dimension is mapped to a file
- int algorithm;
- long multiplier;
- long divisor;
+ // ------------------------------------------------------------------------
+ // members for temporary data we need for calculations
- struct timeval last_collected_time; // when was this dimension last updated
- // this is only used to detect un-updated dimensions
- // which are removed after some time
+ uint32_t hash; // a simple hash of the id, to speed up searching / indexing
+ // instead of strcmp() every item in the binary index
+ // we first compare the hashes
- calculated_number calculated_value;
- calculated_number last_calculated_value;
+ // FIXME
+ // we need the hash_name too!
- collected_number collected_value; // the value collected at this round
- collected_number last_collected_value; // the value that was collected at the last round
+ uint32_t flags;
- struct rrd_dimension *next; // linking of dimensions within the same data set
+ char cache_filename[FILENAME_MAX+1]; // the filename we load/save from/to this set
- storage_number values[]; // the array of values - THIS HAS TO BE THE LAST MEMBER
+ unsigned long counter; // the number of times we added values to this rrdim
+
+ int updated; // set to 0 after each calculation, to 1 after each collected value
+ // we use this to detect that a dimension is not updated
+
+ struct timeval last_collected_time; // when was this dimension last updated
+ // this is actual date time we updated the last_collected_value
+ // THIS IS DIFFERENT FROM THE SAME MEMBER OF RRDSET
+
+ calculated_number calculated_value; // the current calculated value, after applying the algorithm - resets to zero after being used
+ calculated_number last_calculated_value; // the last calculated value processed
+
+ calculated_number last_stored_value; // the last value as stored in the database (after interpolation)
+
+ collected_number collected_value; // the current value, as collected - resets to 0 after being used
+ collected_number last_collected_value; // the last value that was collected, after being processed
+
+ // the *_volume members are used to calculate the accuracy of the rounding done by the
+ // storage number - they are printed to debug.log when debug is enabled for a set.
+ calculated_number collected_volume; // the sum of all collected values so far
+ calculated_number stored_volume; // the sum of all stored values so far
+
+ struct rrddim *next; // linking of dimensions within the same data set
+ struct rrdset *rrdset;
+
+ // ------------------------------------------------------------------------
+ // members for checking the data when loading from disk
+
+ long entries; // how many entries this dimension has in ram
+ // this is the same to the entries of the data set
+ // we set it here, to check the data when we load it from disk.
+
+ int update_every; // every how many seconds is this updated
+
+ unsigned long memsize; // the memory allocated for this dimension
+
+ char magic[sizeof(RRDDIMENSION_MAGIC) + 1]; // a string to be saved, used to identify our data file
+
+ struct rrddimvar *variables;
+
+ // ------------------------------------------------------------------------
+ // the values stored in this dimension, using our floating point numbers
+
+ storage_number values[]; // the array of values - THIS HAS TO BE THE LAST MEMBER
};
-typedef struct rrd_dimension RRD_DIMENSION;
+typedef struct rrddim RRDDIM;
+
+
+// ----------------------------------------------------------------------------
+// RRDSET
+
+struct rrdset {
+ // ------------------------------------------------------------------------
+ // binary indexing structures
+
+ avl avl; // the index, with key the id - this has to be first!
+ avl avlname; // the index, with key the name
+
+ // ------------------------------------------------------------------------
+ // the set configuration
+
+ char id[RRD_ID_LENGTH_MAX + 1]; // id of the data set
-struct rrd_stats {
- char magic[sizeof(RRD_STATS_MAGIC) + 1]; // our magic
+ const char *name; // the name of this dimension (as presented to user)
+ // this is a pointer to the config structure
+ // since the config always has a higher priority
+ // (the user overwrites the name of the charts)
- char id[RRD_STATS_NAME_MAX + 1]; // id of the data set
- char *name; // name of the data set
- char *cache_dir; // the directory to store dimension maps
- char cache_file[FILENAME_MAX+1];
+ char *type; // the type of graph RRD_TYPE_* (a category, for determining graphing options)
+ char *family; // grouping sets under the same family
+ char *title; // title shown to user
+ char *units; // units of measurement
- char *type; // the type of graph RRD_TYPE_* (a category, for determining graphing options)
- char *family; // the family of this data set (for grouping them together)
- char *title; // title shown to user
- char *units; // units of measurement
+ char *context; // the template of this data set
+ uint32_t hash_context;
- pthread_rwlock_t rwlock;
- unsigned long counter; // the number of times we added values to this rrd
- unsigned long counter_done; // the number of times we added values to this rrd
+ int chart_type;
- int mapped; // if set to 1, this is memory mapped
- unsigned long memsize; // how much mem we have allocated for this (without dimensions)
+ int update_every; // every how many seconds is this updated?
- unsigned long hash_name; // a simple hash on the name
- unsigned long hash; // a simple hash on the id, to speed up searching
- // we first compare hashes, and only if the hashes are equal we do string comparisons
+ long entries; // total number of entries in the data set
- long priority;
+ long current_entry; // the entry that is currently being updated
+ // it goes around in a round-robin fashion
- long entries; // total number of entries in the data set
- long current_entry; // the entry that is currently being updated
- // it goes around in a round-robin fashion
+ int enabled;
- int update_every; // every how many seconds is this updated?
- unsigned long long first_entry_t; // the timestamp (in microseconds) of the oldest entry in the db
- struct timeval last_updated; // when this data set was last updated (updated every time the rrd_stats_done() function)
- struct timeval last_collected_time; //
- unsigned long long usec_since_last_update;
+ int gap_when_lost_iterations_above; // after how many lost iterations a gap should be stored
+ // netdata will interpolate values for gaps lower than this
- total_number collected_total;
- total_number last_collected_total;
+ long priority;
- int chart_type;
- int debug;
- int enabled;
- int isdetail; // if set, the data set should be considered as a detail of another
- // (the master data set should be the one that has the same family and is not detail)
+ int isdetail; // if set, the data set should be considered as a detail of another
+ // (the master data set should be the one that has the same family and is not detail)
- RRD_DIMENSION *dimensions; // the actual data for every dimension
+ // ------------------------------------------------------------------------
+ // members for temporary data we need for calculations
+
+ int mapped; // if set to 1, this is memory mapped
+
+ int debug;
+
+ char *cache_dir; // the directory to store dimensions
+ char cache_filename[FILENAME_MAX+1]; // the filename to store this set
+
+ pthread_rwlock_t rwlock;
+
+ unsigned long counter; // the number of times we added values to this rrd
+ unsigned long counter_done; // the number of times we added values to this rrd
+
+ uint32_t hash; // a simple hash on the id, to speed up searching
+ // we first compare hashes, and only if the hashes are equal we do string comparisons
+
+ uint32_t hash_name; // a simple hash on the name
+
+ unsigned long long usec_since_last_update; // the time in microseconds since the last collection of data
+
+ struct timeval last_updated; // when this data set was last updated (updated every time the rrd_stats_done() function)
+ struct timeval last_collected_time; // when did this data set last collected values
+
+ total_number collected_total; // used internally to calculate percentages
+ total_number last_collected_total; // used internally to calculate percentages
+
+ RRDCONTEXT *rrdcontext;
+ struct rrdhost *rrdhost;
+
+ struct rrdset *next; // linking of rrdsets
+
+ // ------------------------------------------------------------------------
+ // local variables
+
+ calculated_number green;
+ calculated_number red;
+
+ avl_tree_lock variables_root_index;
+ RRDSETVAR *variables;
+ RRDCALC *calculations;
+
+ // ------------------------------------------------------------------------
+ // members for checking the data when loading from disk
+
+ unsigned long memsize; // how much mem we have allocated for this (without dimensions)
+
+ char magic[sizeof(RRDSET_MAGIC) + 1]; // our magic
+
+ // ------------------------------------------------------------------------
+ // the dimensions
+
+ avl_tree_lock dimensions_index; // the root of the dimensions index
+ RRDDIM *dimensions; // the actual data for every dimension
- struct rrd_stats *next; // linking of rrd stats
};
-typedef struct rrd_stats RRD_STATS;
+typedef struct rrdset RRDSET;
-extern RRD_STATS *root;
-extern pthread_rwlock_t root_rwlock;
+// ----------------------------------------------------------------------------
+// RRD HOST
-extern char *rrd_stats_strncpy_name(char *to, const char *from, int length);
-extern void rrd_stats_set_name(RRD_STATS *st, const char *name);
+struct rrdhost {
+ avl avl;
-extern char *rrd_stats_cache_dir(const char *id);
+ char *hostname;
-extern void rrd_stats_reset(RRD_STATS *st);
+ RRDSET *rrdset_root;
+ pthread_rwlock_t rrdset_root_rwlock;
-extern RRD_STATS *rrd_stats_create(const char *type, const char *id, const char *name, const char *family, const char *title, const char *units, long priority, int update_every, int chart_type);
+ avl_tree_lock rrdset_root_index;
+ avl_tree_lock rrdset_root_index_name;
-extern RRD_DIMENSION *rrd_stats_dimension_add(RRD_STATS *st, const char *id, const char *name, long multiplier, long divisor, int algorithm);
+ avl_tree_lock rrdcontext_root_index;
+ avl_tree_lock variables_root_index;
-extern void rrd_stats_dimension_set_name(RRD_STATS *st, RRD_DIMENSION *rd, const char *name);
-extern void rrd_stats_dimension_free(RRD_DIMENSION *rd);
+ // all RRDCALCs are primarily allocated and linked here
+ // RRDCALCs may be linked to charts at any point
+ // (charts may or may not exist when these are loaded)
+ RRDCALC *calculations;
-extern void rrd_stats_free_all(void);
-extern void rrd_stats_save_all(void);
+ RRDCALCTEMPLATE *templates;
-extern RRD_STATS *rrd_stats_find(const char *id);
-extern RRD_STATS *rrd_stats_find_bytype(const char *type, const char *id);
-extern RRD_STATS *rrd_stats_find_byname(const char *name);
+ // all variable references are linked here
+ // RRDVARs may be free'd, so every time this happens
+ // we need to find all their references and invalidate them
+ EVAL_VARIABLE *references;
+};
+typedef struct rrdhost RRDHOST;
+extern RRDHOST localhost;
-extern RRD_DIMENSION *rrd_stats_dimension_find(RRD_STATS *st, const char *id);
+#ifdef NETDATA_INTERNAL_CHECKS
+#define rrdhost_check_wrlock(host) rrdhost_check_wrlock_int(host, __FILE__, __FUNCTION__, __LINE__)
+#define rrdhost_check_rdlock(host) rrdhost_check_rdlock_int(host, __FILE__, __FUNCTION__, __LINE__)
+#else
+#define rrdhost_check_rdlock(host) (void)0
+#define rrdhost_check_wrlock(host) (void)0
+#endif
+
+extern void rrdhost_check_wrlock_int(RRDHOST *host, const char *file, const char *function, const unsigned long line);
+extern void rrdhost_check_rdlock_int(RRDHOST *host, const char *file, const char *function, const unsigned long line);
+
+extern void rrdhost_rwlock(RRDHOST *host);
+extern void rrdhost_rdlock(RRDHOST *host);
+extern void rrdhost_unlock(RRDHOST *host);
+
+// ----------------------------------------------------------------------------
+// RRD SET functions
+
+extern char *rrdset_strncpyz_name(char *to, const char *from, size_t length);
+extern void rrdset_set_name(RRDSET *st, const char *name);
+
+extern char *rrdset_cache_dir(const char *id);
+
+extern void rrdset_reset(RRDSET *st);
+
+extern RRDSET *rrdset_create(const char *type
+ , const char *id
+ , const char *name
+ , const char *family
+ , const char *context
+ , const char *title
+ , const char *units
+ , long priority
+ , int update_every
+ , int chart_type);
+
+extern void rrdset_free_all(void);
+extern void rrdset_save_all(void);
+
+extern RRDSET *rrdset_find(const char *id);
+extern RRDSET *rrdset_find_bytype(const char *type, const char *id);
+extern RRDSET *rrdset_find_byname(const char *name);
+
+extern void rrdset_next_usec(RRDSET *st, unsigned long long microseconds);
+extern void rrdset_next(RRDSET *st);
+extern void rrdset_next_plugins(RRDSET *st);
+
+extern unsigned long long rrdset_done(RRDSET *st);
+
+// get the total duration in seconds of the round robin database
+#define rrdset_duration(st) ((time_t)( (((st)->counter >= ((unsigned long)(st)->entries))?(unsigned long)(st)->entries:(st)->counter) * (st)->update_every ))
+
+// get the timestamp of the last entry in the round robin database
+#define rrdset_last_entry_t(st) ((time_t)(((st)->last_updated.tv_sec)))
+
+// get the timestamp of first entry in the round robin database
+#define rrdset_first_entry_t(st) ((time_t)(rrdset_last_entry_t(st) - rrdset_duration(st)))
+
+// get the last slot updated in the round robin database
+#define rrdset_last_slot(st) ((unsigned long)(((st)->current_entry == 0) ? (st)->entries - 1 : (st)->current_entry - 1))
+
+// get the first / oldest slot updated in the round robin database
+#define rrdset_first_slot(st) ((unsigned long)( (((st)->counter >= ((unsigned long)(st)->entries)) ? (unsigned long)( ((unsigned long)(st)->current_entry > 0) ? ((unsigned long)(st)->current_entry) : ((unsigned long)(st)->entries) ) - 1 : 0) ))
+
+// get the slot of the round robin database, for the given timestamp (t)
+// it always returns a valid slot, although may not be for the time requested if the time is outside the round robin database
+#define rrdset_time2slot(st, t) ( \
+ ( (time_t)(t) >= rrdset_last_entry_t(st)) ? ( rrdset_last_slot(st) ) : \
+ ( ((time_t)(t) <= rrdset_first_entry_t(st)) ? rrdset_first_slot(st) : \
+ ( (rrdset_last_slot(st) >= (unsigned long)((rrdset_last_entry_t(st) - (time_t)(t)) / (unsigned long)((st)->update_every)) ) ? \
+ (rrdset_last_slot(st) - (unsigned long)((rrdset_last_entry_t(st) - (time_t)(t)) / (unsigned long)((st)->update_every)) ) : \
+ (rrdset_last_slot(st) - (unsigned long)((rrdset_last_entry_t(st) - (time_t)(t)) / (unsigned long)((st)->update_every)) + (unsigned long)(st)->entries ) \
+ )))
+
+// get the timestamp of a specific slot in the round robin database
+#define rrdset_slot2time(st, slot) ( rrdset_last_entry_t(st) - \
+ ((unsigned long)(st)->update_every * ( \
+ ( (unsigned long)(slot) > rrdset_last_slot(st)) ? \
+ ( (rrdset_last_slot(st) - (unsigned long)(slot) + (unsigned long)(st)->entries) ) : \
+ ( (rrdset_last_slot(st) - (unsigned long)(slot)) )) \
+ ))
+
+// ----------------------------------------------------------------------------
+// RRD DIMENSION functions
-extern int rrd_stats_dimension_hide(RRD_STATS *st, const char *id);
+extern RRDDIM *rrddim_add(RRDSET *st, const char *id, const char *name, long multiplier, long divisor, int algorithm);
-extern void rrd_stats_dimension_set_by_pointer(RRD_STATS *st, RRD_DIMENSION *rd, collected_number value);
-extern int rrd_stats_dimension_set(RRD_STATS *st, const char *id, collected_number value);
+extern void rrddim_set_name(RRDSET *st, RRDDIM *rd, const char *name);
+extern void rrddim_free(RRDSET *st, RRDDIM *rd);
-extern void rrd_stats_next_usec(RRD_STATS *st, unsigned long long microseconds);
-extern void rrd_stats_next(RRD_STATS *st);
-extern void rrd_stats_next_plugins(RRD_STATS *st);
+extern RRDDIM *rrddim_find(RRDSET *st, const char *id);
-extern unsigned long long rrd_stats_done(RRD_STATS *st);
+extern int rrddim_hide(RRDSET *st, const char *id);
+extern int rrddim_unhide(RRDSET *st, const char *id);
-extern time_t rrd_stats_first_entry_t(RRD_STATS *st);
+extern collected_number rrddim_set_by_pointer(RRDSET *st, RRDDIM *rd, collected_number value);
+extern collected_number rrddim_set(RRDSET *st, const char *id, collected_number value);
#endif /* NETDATA_RRD_H */
projects / netdata.git / blobdiff