#include <config.h>
#endif
-// gcc -O3 -Wall -Wextra -I ../src/ -I ../ -o registry ../src/registry.c ../src/dictionary.o ../src/log.o ../src/avl.o ../src/common.o -pthread -luuid -DHAVE_CONFIG_H
+// gcc -O1 -ggdb -Wall -Wextra -I ../src/ -I ../ -o registry ../src/registry.c ../src/dictionary.o ../src/log.o ../src/avl.o ../src/common.o ../src/appconfig.o ../src/web_buffer.o ../src/storage_number.o -pthread -luuid -lm -DHAVE_CONFIG_H -DVARLIB_DIR="\"/tmp\""
#include <uuid/uuid.h>
#include <inttypes.h>
#include <stdlib.h>
#include <string.h>
+#include <ctype.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <errno.h>
#include "log.h"
#include "common.h"
#include "dictionary.h"
+#include "appconfig.h"
+#define REGISTRY_URL_FLAGS_DEFAULT 0x00
+#define REGISTRY_URL_FLAGS_EXPIRED 0x01
+
+#define DICTIONARY_FLAGS DICTIONARY_FLAG_VALUE_LINK_DONT_CLONE | DICTIONARY_FLAG_NAME_LINK_DONT_CLONE
+
+// ----------------------------------------------------------------------------
+// COMMON structures
+
+struct registry {
+ unsigned long long persons_count;
+ unsigned long long machines_count;
+ unsigned long long usages_count;
+ unsigned long long urls_count;
+ unsigned long long persons_urls_count;
+ unsigned long long machines_urls_count;
+
+ char *pathname;
+ char *db_filename;
+ char *log_filename;
+ FILE *registry_log_fp;
+
+ DICTIONARY *persons; // dictionary of PERSON *, with key the PERSON.guid
+ DICTIONARY *machines; // dictionary of MACHINE *, with key the MACHINE.guid
+ DICTIONARY *urls; // dictionary of URL *, with key the URL.url
+
+} registry;
+
+
+// ----------------------------------------------------------------------------
+// URL structures
+// Save memory by de-duplicating URLs
+
+struct url {
+ uint32_t links;
+ uint16_t len;
+ char url[1];
+};
+typedef struct url URL;
+
+
+// ----------------------------------------------------------------------------
+// MACHINE structures
+
+// For each MACHINE-URL pair we keep this
+struct machine_url {
+ URL *url; // de-duplicated URL
+// DICTIONARY *persons; // dictionary of PERSON *
+
+ uint8_t flags;
+ uint32_t first_t; // the first time we saw this
+ uint32_t last_t; // the last time we saw this
+ uint32_t usages; // how many times this has been accessed
+};
+typedef struct machine_url MACHINE_URL;
+
+// A machine
struct machine {
char guid[36 + 1];
- time_t first_t;
- time_t last_t;
- size_t usages;
-
- DICTIONARY *urls;
+ DICTIONARY *urls; // MACHINE_URL *
+
+ uint32_t first_t; // the first time we saw this
+ uint32_t last_t; // the last time we saw this
+ uint32_t usages; // how many times this has been accessed
};
typedef struct machine MACHINE;
+// ----------------------------------------------------------------------------
+// PERSON structures
+
+// for each PERSON-URL pair we keep this
+struct person_url {
+ URL *url; // de-duplicated URL
+ MACHINE *machine;
+
+ uint8_t flags;
+ uint32_t first_t; // the first time we saw this
+ uint32_t last_t; // the last time we saw this
+ uint32_t usages; // how many times this has been accessed
+};
+typedef struct person_url PERSON_URL;
+
+// A person
struct person {
char guid[36 + 1];
- time_t first_t;
- time_t last_t;
- size_t usages;
+ DICTIONARY *urls; // PERSON_URL *
- DICTIONARY *urls;
+ uint32_t first_t; // the first time we saw this
+ uint32_t last_t; // the last time we saw this
+ uint32_t usages; // how many times this has been accessed
};
typedef struct person PERSON;
+extern PERSON *registry_request(const char *person_guid, const char *machine_guid, const char *url, time_t when);
-struct url {
- MACHINE *machine;
- PERSON *person;
+// ----------------------------------------------------------------------------
+// URL
- time_t first_t;
- time_t last_t;
- size_t usages;
+static inline URL *registry_url_allocate(const char *url) {
+ size_t len = strlen(url);
- size_t url_length;
- char url[];
-};
-typedef struct url URL;
+ debug(D_REGISTRY, "Registry: registry_url_allocate('%s'): allocating %zu bytes", url, sizeof(URL) + len);
+ URL *u = malloc(sizeof(URL) + len);
+ if(!u) fatal("Cannot allocate %zu bytes for URL '%s'", sizeof(URL) + len);
+ strcpy(u->url, url);
+ u->len = len;
+ u->links = 0;
-struct registry {
- DICTIONARY *persons;
- DICTIONARY *machines;
-} registry;
+ debug(D_REGISTRY, "Registry: registry_url_allocate('%s'): indexing it", url);
+ dictionary_set(registry.urls, u->url, u, sizeof(URL));
+ return u;
+}
-// ----------------------------------------------------------------------------
-// MACHINE
+static inline URL *registry_url_get(const char *url) {
+ debug(D_REGISTRY, "Registry: registry_url_get('%s')", url);
-MACHINE *registry_machine_load(const char *machine_guid) {
- (void)machine_guid;
+ URL *u = dictionary_get(registry.urls, url);
+ if(!u) {
+ u = registry_url_allocate(url);
+ registry.urls_count++;
+ }
- return NULL;
+ return u;
}
-int registry_machine_save(MACHINE *m) {
- (void)m;
+static inline void registry_url_link(URL *u) {
+ u->links++;
+ debug(D_REGISTRY, "Registry: registry_url_unlink('%s'): This URL has now %u links", u->url, u->links);
+}
- return -1;
+static inline void registry_url_unlink(URL *u) {
+ u->links--;
+ if(!u->links) {
+ debug(D_REGISTRY, "Registry: registry_url_unlink('%s'): No more links for this URL", u->url);
+ dictionary_del(registry.urls, u->url);
+ free(u);
+ }
+ else
+ debug(D_REGISTRY, "Registry: registry_url_unlink('%s'): This URL has %u links left", u->url, u->links);
}
-MACHINE *registry_machine_find(const char *machine_guid) {
- MACHINE *m = dictionary_get(registry.machines, machine_guid);
- if(!m) m = registry_machine_load(machine_guid);
- return m;
+
+// ----------------------------------------------------------------------------
+// MACHINE
+
+static inline MACHINE *registry_machine_find(const char *machine_guid) {
+ debug(D_REGISTRY, "Registry: registry_machine_find('%s')", machine_guid);
+ return dictionary_get(registry.machines, machine_guid);
+}
+
+static inline MACHINE_URL *registry_machine_url_allocate(MACHINE *m, URL *u, time_t when) {
+ debug(D_REGISTRY, "registry_machine_link_to_url('%s', '%s'): allocating %zu bytes", m->guid, u->url, sizeof(MACHINE_URL));
+
+ MACHINE_URL *mu = malloc(sizeof(MACHINE_URL));
+ if(!mu) fatal("registry_machine_link_to_url('%s', '%s'): cannot allocate %zu bytes.", m->guid, u->url, sizeof(MACHINE_URL));
+
+ // mu->persons = dictionary_create(DICTIONARY_FLAGS);
+ // dictionary_set(mu->persons, p->guid, p, sizeof(PERSON));
+
+ mu->first_t = mu->last_t = when;
+ mu->usages = 1;
+ mu->url = u;
+ mu->flags = REGISTRY_URL_FLAGS_DEFAULT;
+
+ debug(D_REGISTRY, "registry_machine_link_to_url('%s', '%s'): indexing URL in machine", m->guid, u->url);
+ dictionary_set(m->urls, u->url, mu, sizeof(MACHINE_URL));
+ registry_url_link(u);
+
+ return mu;
}
+static inline MACHINE *registry_machine_allocate(const char *machine_guid, time_t when) {
+ debug(D_REGISTRY, "Registry: registry_machine_allocate('%s'): creating new machine, sizeof(MACHINE)=%zu", machine_guid, sizeof(MACHINE));
+
+ MACHINE *m = calloc(1, sizeof(MACHINE));
+ if(!m) fatal("Registry: cannot allocate memory for new machine '%s'", machine_guid);
+
+ strncpy(m->guid, machine_guid, 36);
+
+ debug(D_REGISTRY, "Registry: registry_machine_allocate('%s'): creating dictionary of urls", machine_guid);
+ m->urls = dictionary_create(DICTIONARY_FLAGS);
-MACHINE *registry_machine_get(const char *machine_guid) {
- MACHINE *m = registry_machine_find(machine_guid);
- if(!m) {
- debug(D_REGISTRY, "Registry: creating new machine '%s'", machine_guid);
+ m->first_t = m->last_t = when;
+ m->usages = 0;
- m = calloc(1, sizeof(MACHINE));
- if(!m) fatal("Registry: cannot allocate memory for new machine '%s'", machine_guid);
+ dictionary_set(registry.machines, m->guid, m, sizeof(MACHINE));
- strncpy(m->guid, machine_guid, 36);
+ return m;
+}
+
+// 1. validate machine GUID
+// 2. if it is valid, find it or create it and return it
+// 3. if it is not valid, return NULL
+static inline MACHINE *registry_machine_get(const char *machine_guid, time_t when) {
+ MACHINE *m = NULL;
- dictionary_set(registry.machines, m->guid, m, sizeof(MACHINE));
-
- m->first_t = time(NULL);
- m->usages = 0;
+ if(likely(machine_guid && *machine_guid)) {
+ // validate it is a GUID
+ uuid_t uuid;
+ if(uuid_parse(machine_guid, uuid) == -1) {
+ info("Registry: machine guid '%s' is not a valid guid. Ignoring it.", machine_guid);
+ }
+ else {
+ char buf[36 + 1];
+ uuid_unparse_lower(uuid, buf);
+ if(strcmp(machine_guid, buf))
+ info("Registry: machine guid '%s' and re-generated '%s' differ!", machine_guid, buf);
+
+ machine_guid = buf;
+ m = registry_machine_find(machine_guid);
+ if(!m) {
+ m = registry_machine_allocate(machine_guid, when);
+ registry.machines_count++;
+ }
+ }
}
return m;
// ----------------------------------------------------------------------------
// PERSON
-PERSON *registry_person_load(const char *person_guid) {
- (void)person_guid;
-
- return NULL;
+static inline PERSON *registry_person_find(const char *person_guid) {
+ debug(D_REGISTRY, "Registry: registry_person_find('%s')", person_guid);
+ return dictionary_get(registry.persons, person_guid);
}
-int registry_person_save(PERSON *p) {
- (void)p;
+static inline PERSON_URL *registry_person_url_allocate(PERSON *p, MACHINE *m, URL *u, time_t when) {
+ debug(D_REGISTRY, "registry_person_link_to_url('%s', '%s', '%s'): allocating %zu bytes", p->guid, m->guid, u->url, sizeof(PERSON_URL));
+ PERSON_URL *pu = malloc(sizeof(PERSON_URL));
+ if(!pu) fatal("registry_person_link_to_url('%s', '%s', '%s'): cannot allocate %zu bytes.", p->guid, m->guid, u->url, sizeof(PERSON_URL));
- return -1;
+ pu->machine = m;
+ pu->first_t = pu->last_t = when;
+ pu->usages = 1;
+ pu->url = u;
+ pu->flags = REGISTRY_URL_FLAGS_DEFAULT;
+
+ debug(D_REGISTRY, "registry_person_link_to_url('%s', '%s', '%s'): indexing URL in person", p->guid, m->guid, u->url);
+ dictionary_set(p->urls, u->url, pu, sizeof(PERSON_URL));
+ registry_url_link(u);
+
+ return pu;
}
-PERSON *registry_person_find(const char *person_guid) {
- PERSON *p = dictionary_get(registry.persons, person_guid);
- if(!p) p = registry_person_load(person_guid);
+static inline PERSON *registry_person_allocate(const char *person_guid, time_t when) {
+ PERSON *p = NULL;
+
+ debug(D_REGISTRY, "Registry: registry_person_allocate('%s'): allocating new person, sizeof(PERSON)=%zu", (person_guid)?person_guid:"", sizeof(PERSON));
+
+ p = calloc(1, sizeof(PERSON));
+ if(!p) fatal("Registry: cannot allocate memory for new person.");
+
+ if(!person_guid) {
+ for (; ;) {
+ uuid_t uuid;
+ if (uuid_generate_time_safe(uuid) == -1)
+ info("Registry: uuid_generate_time_safe() reports UUID generation is not safe for uniqueness.");
+
+ uuid_unparse_lower(uuid, p->guid);
+
+ debug(D_REGISTRY, "Registry: Checking if the generated person guid '%s' is unique", p->guid);
+ if (!dictionary_get(registry.persons, p->guid)) {
+ debug(D_REGISTRY, "Registry: generated person guid '%s' is unique", p->guid);
+ break;
+ }
+ else
+ info("Registry: generated person guid '%s' found in the registry. Retrying...", p->guid);
+ }
+ }
+ else {
+ strncpy(p->guid, person_guid, 36);
+ p->guid[36] = '\0';
+ }
+
+ debug(D_REGISTRY, "Registry: registry_person_allocate('%s'): creating dictionary of urls", p->guid);
+ p->urls = dictionary_create(DICTIONARY_FLAGS);
+
+ p->first_t = p->last_t = when;
+ p->usages = 0;
+
+ dictionary_set(registry.persons, p->guid, p, sizeof(PERSON));
return p;
}
-PERSON *registry_person_get(const char *person_guid) {
+
+// 1. validate person GUID
+// 2. if it is valid, find it
+// 3. if it is not valid, create a new one
+// 4. return it
+static inline PERSON *registry_person_get(const char *person_guid, time_t when) {
PERSON *p = NULL;
- if(person_guid && *person_guid)
- p = registry_person_find(person_guid);
+ if(person_guid && *person_guid) {
+ // validate it is a GUID
+ uuid_t uuid;
+ if(uuid_parse(person_guid, uuid) == -1) {
+ info("Registry: person guid '%s' is not a valid guid. Ignoring it.", person_guid);
+ }
+ else {
+ char buf[36 + 1];
+ uuid_unparse_lower(uuid, buf);
+ if(strcmp(person_guid, buf))
+ info("Registry: person guid '%s' and re-generated '%s' differ!", person_guid, buf);
+
+ person_guid = buf;
+ p = registry_person_find(person_guid);
+ if(!p) person_guid = NULL;
+ }
+ }
if(!p) {
- if(person_guid && *person_guid)
- error("Registry: discarding unknown person guid '%s'. Will give a new PERSONID.", person_guid);
+ p = registry_person_allocate(NULL, when);
+ registry.persons_count++;
+ }
+
+ return p;
+}
- debug(D_REGISTRY, "Registry: creating new person");
+// ----------------------------------------------------------------------------
+// LINKING OF OBJECTS
- p = calloc(1, sizeof(PERSON));
- if(!p) fatal("Registry: cannot allocate memory for new person.");
+static inline PERSON_URL *registry_person_link_to_url(PERSON *p, MACHINE *m, URL *u, time_t when) {
+ debug(D_REGISTRY, "registry_person_link_to_url('%s', '%s', '%s'): searching for URL in person", p->guid, m->guid, u->url);
- uuid_t uuid;
- if(uuid_generate_time_safe(uuid) == -1)
- info("Registry: uuid_generate_time_safe() reports UUID generation is not safe for uniqueness.");
+ PERSON_URL *pu = dictionary_get(p->urls, u->url);
+ if(!pu) {
+ debug(D_REGISTRY, "registry_person_link_to_url('%s', '%s', '%s'): not found", p->guid, m->guid, u->url);
+ pu = registry_person_url_allocate(p, m, u, when);
+ registry.persons_urls_count++;
+ }
+ else {
+ debug(D_REGISTRY, "registry_person_link_to_url('%s', '%s', '%s'): found", p->guid, m->guid, u->url);
+ pu->usages++;
+
+ if(pu->machine != m) {
+ MACHINE_URL *mu = dictionary_get(pu->machine->urls, u->url);
+ if(mu) {
+ info("registry_person_link_to_url('%s', '%s', '%s'): URL switched machines (old was '%s') - expiring it from previous machine.",
+ p->guid, m->guid, u->url, pu->machine->guid);
+ mu->flags |= REGISTRY_URL_FLAGS_EXPIRED;
+ }
+
+ pu->machine = m;
+ }
+ }
+
+ p->usages++;
+ p->last_t = when;
+
+ if(pu->flags & REGISTRY_URL_FLAGS_EXPIRED)
+ info("registry_person_link_to_url('%s', '%s', '%s'): accessing an expired URL.", p->guid, m->guid, u->url);
+
+ return pu;
+}
+
+static inline MACHINE_URL *registry_machine_link_to_url(PERSON *p, MACHINE *m, URL *u, time_t when) {
+ debug(D_REGISTRY, "registry_machine_link_to_url('%s', '%s', '%s'): searching for URL in machine", p->guid, m->guid, u->url);
- uuid_unparse_lower(uuid, p->guid);
+ MACHINE_URL *mu = dictionary_get(m->urls, u->url);
+ if(!mu) {
+ debug(D_REGISTRY, "registry_machine_link_to_url('%s', '%s', '%s'): not found", p->guid, m->guid, u->url);
+ mu = registry_machine_url_allocate(m, u, when);
+ registry.machines_urls_count++;
+ }
+ else {
+ debug(D_REGISTRY, "registry_machine_link_to_url('%s', '%s', '%s'): found", p->guid, m->guid, u->url);
+ mu->usages++;
+ }
+
+ //debug(D_REGISTRY, "registry_machine_link_to_url('%s', '%s', '%s'): indexing person in machine", p->guid, m->guid, u->url);
+ //dictionary_set(mu->persons, p->guid, p, sizeof(PERSON));
+
+ m->usages++;
+ m->last_t = when;
- dictionary_set(registry.persons, p->guid, p, sizeof(PERSON));
+ if(mu->flags & REGISTRY_URL_FLAGS_EXPIRED)
+ info("registry_person_link_to_url('%s', '%s', '%s'): accessing an expired URL.", p->guid, m->guid, u->url);
- p->first_t = time(NULL);
- p->usages = 0;
+ return mu;
+}
+
+// ----------------------------------------------------------------------------
+// REGISTRY LOG LOAD/SAVE
+
+static inline void registry_log(const char action, PERSON *p, MACHINE *m, URL *u) {
+ if(likely(registry.registry_log_fp))
+ fprintf(registry.registry_log_fp, "%c\t%08x\t%s\t%s\t%s\n",
+ action,
+ p->last_t,
+ p->guid,
+ m->guid,
+ u->url
+ );
+}
+
+void registry_log_open(void) {
+ registry.registry_log_fp = fopen(registry.log_filename, "a");
+
+ if(registry.registry_log_fp) {
+ if (setvbuf(registry.registry_log_fp, NULL, _IOLBF, 0) != 0)
+ error("Cannot set line buffering on registry log file.");
}
+}
+
+void registry_log_close(void) {
+ if(registry.registry_log_fp)
+ fclose(registry.registry_log_fp);
+
+ registry.registry_log_fp = NULL;
+}
+
+void registry_log_recreate(void) {
+ if(registry.registry_log_fp != NULL) {
+ fclose(registry.registry_log_fp);
+
+ registry.registry_log_fp = fopen(registry.log_filename, "w");
+ if(registry.registry_log_fp) fclose(registry.registry_log_fp);
+ registry.registry_log_fp = NULL;
+
+ registry_log_open();
+ }
+}
+
+int registry_log_load(void) {
+ char *s, buf[4096 + 1];
+ size_t line = 0;
+
+ registry_log_close();
+
+ debug(D_REGISTRY, "Registry: loading active db from: %s", registry.log_filename);
+ FILE *fp = fopen(registry.log_filename, "r");
+ if(!fp) {
+ error("Registry: cannot open registry file: %s", registry.log_filename);
+ return 0;
+ }
+
+ size_t len = 0;
+ while((s = fgets_trim_len(buf, 4096, fp, &len))) {
+ line++;
+
+ switch(s[0]) {
+ case 'A':
+ // verify it is valid
+ if(unlikely(len < 85 || s[1] != '\t' || s[10] != '\t' || s[47] != '\t' || s[84] != '\t'))
+ error("Registry log line %u is wrong (len = %zu).", line, len);
+
+ s[1] = s[10] = s[47] = s[84] = '\0';
+ registry_request(&s[11], &s[48], &s[85], strtoul(&s[2], NULL, 16));
+ break;
+
+ default:
+ error("Registry: ignoring line %zu of filename '%s': %s.", line, registry.log_filename, s);
+ break;
+ }
+ }
+
+ registry_log_open();
+
+ return 0;
+}
+
+// ----------------------------------------------------------------------------
+// REGISTRY REQUESTS
+
+PERSON *registry_request(const char *person_guid, const char *machine_guid, const char *url, time_t when) {
+ debug(D_REGISTRY, "registry_request('%s', '%s', '%s'): NEW REQUEST", (person_guid)?person_guid:"", machine_guid, url);
+
+ MACHINE *m = registry_machine_get(machine_guid, when);
+ if(!m) return NULL;
+
+ URL *u = registry_url_get(url);
+ PERSON *p = registry_person_get(person_guid, when);
+
+ registry_person_link_to_url(p, m, u, when);
+ registry_machine_link_to_url(p, m, u, when);
+
+ registry_log('A', p, m, u);
+
+ registry.usages_count++;
return p;
}
// ----------------------------------------------------------------------------
-// URL
+// REGISTRY LOAD/SAVE
-URL *registry_url_update(PERSON *p, MACHINE *m, const char *url) {
- URL *pu = dictionary_get(p->urls, url);
- URL *mu = dictionary_get(m->urls, url);
- URL *u = NULL;
+int registry_machine_save_url(void *entry, void *file) {
+ MACHINE_URL *mu = entry;
+ FILE *fp = file;
- if(pu != mu || pu == NULL || mu == NULL)
- error("Registry: person/machine discrepancy on url '%s', for person '%s' and machine '%s'", url, p->guid, m->guid);
- else
- u = pu;
+ debug(D_REGISTRY, "Registry: registry_machine_save_url('%s')", mu->url->url);
- if(!u) {
- size_t len = strlen(url);
+ int ret = fprintf(fp, "V\t%08x\t%08x\t%08x\t%02x\t%s\n",
+ mu->first_t,
+ mu->last_t,
+ mu->usages,
+ mu->flags,
+ mu->url->url
+ );
+
+ return ret;
+}
+
+int registry_machine_save(void *entry, void *file) {
+ MACHINE *m = entry;
+ FILE *fp = file;
- URL *u = calloc(1, sizeof(URL) + len);
- if(!u) fatal("Registry: cannot allocate memory for person '%s', machine '%s', url '%s'.", p->guid, m->guid, url);
+ debug(D_REGISTRY, "Registry: registry_machine_save('%s')", m->guid);
- strcpy(u->url, url);
- u->url_length = len;
- u->person = p;
- u->machine = m;
- u->first_t = time(NULL);
- u->usages = 1;
+ int ret = fprintf(fp, "M\t%08x\t%08x\t%08x\t%s\n",
+ m->first_t,
+ m->last_t,
+ m->usages,
+ m->guid
+ );
- dictionary_set(p->urls, url, u, sizeof(URL) + u->url_length);
- dictionary_set(m->urls, url, u, sizeof(URL) + u->url_length);
- if(pu) free(pu);
- if(mu) free(mu);
+ if(ret >= 0) {
+ int ret2 = dictionary_get_all(m->urls, registry_machine_save_url, fp);
+ if(ret2 < 0) return ret2;
+ ret += ret2;
}
- else
- u->usages++;
- p->usages++;
- m->usages++;
- p->last_t = m->last_t = u->last_t = time(NULL);
+ return ret;
+}
- return u;
+static inline int registry_person_save_url(void *entry, void *file) {
+ PERSON_URL *pu = entry;
+ FILE *fp = file;
+
+ debug(D_REGISTRY, "Registry: registry_person_save_url('%s')", pu->url->url);
+
+ int ret = fprintf(fp, "U\t%08x\t%08x\t%08x\t%02x\t%s\t%s\n",
+ pu->first_t,
+ pu->last_t,
+ pu->usages,
+ pu->flags,
+ pu->machine->guid,
+ pu->url->url
+ );
+
+ return ret;
}
+static inline int registry_person_save(void *entry, void *file) {
+ PERSON *p = entry;
+ FILE *fp = file;
-// ----------------------------------------------------------------------------
-// REGISTRY
+ debug(D_REGISTRY, "Registry: registry_person_save('%s')", p->guid);
+
+ int ret = fprintf(fp, "P\t%08x\t%08x\t%08x\t%s\n",
+ p->first_t,
+ p->last_t,
+ p->usages,
+ p->guid
+ );
+
+ if(ret >= 0) {
+ int ret2 = dictionary_get_all(p->urls, registry_person_save_url, fp);
+ if (ret2 < 0) return ret2;
+ ret += ret2;
+ }
+
+ return ret;
+}
+
+static int registry_save(void) {
+ char tmp_filename[FILENAME_MAX + 1];
+ char old_filename[FILENAME_MAX + 1];
+
+ snprintf(old_filename, FILENAME_MAX, "%s.old", registry.db_filename);
+ snprintf(tmp_filename, FILENAME_MAX, "%s.tmp", registry.db_filename);
+
+ debug(D_REGISTRY, "Registry: Creating file '%s'", tmp_filename);
+ FILE *fp = fopen(tmp_filename, "w");
+ if(!fp) {
+ error("Registry: Cannot create file: %s", tmp_filename);
+ return -1;
+ }
+
+ debug(D_REGISTRY, "Saving all machines");
+ int bytes1 = dictionary_get_all(registry.machines, registry_machine_save, fp);
+ if(bytes1 < 0) {
+ error("Registry: Cannot save registry machines - return value %d", bytes1);
+ fclose(fp);
+ return bytes1;
+ }
+ debug(D_REGISTRY, "Registry: saving machines took %d bytes", bytes1);
+
+ debug(D_REGISTRY, "Saving all persons");
+ int bytes2 = dictionary_get_all(registry.persons, registry_person_save, fp);
+ if(bytes2 < 0) {
+ error("Registry: Cannot save registry persons - return value %d", bytes2);
+ fclose(fp);
+ return bytes2;
+ }
+ debug(D_REGISTRY, "Registry: saving persons took %d bytes", bytes2);
+
+ fclose(fp);
+
+ errno = 0;
+
+ // remove the .old db
+ debug(D_REGISTRY, "Registry: Removing old db '%s'", old_filename);
+ if(unlink(old_filename) == -1 && errno != ENOENT)
+ error("Registry: cannot remove old registry file '%s'", old_filename);
+
+ // rename the db to .old
+ debug(D_REGISTRY, "Registry: Link current db '%s' to .old: '%s'", registry.db_filename, old_filename);
+ if(link(registry.db_filename, old_filename) == -1 && errno != ENOENT)
+ error("Registry: cannot move file '%s' to '%s'. Saving registry DB failed!", tmp_filename, registry.db_filename);
+
+ else {
+ // remove the database (it is saved in .old)
+ debug(D_REGISTRY, "Registry: removing db '%s'", registry.db_filename);
+ if (unlink(registry.db_filename) == -1 && errno != ENOENT)
+ error("Registry: cannot remove old registry file '%s'", registry.db_filename);
+
+ // move the .tmp to make it active
+ debug(D_REGISTRY, "Registry: linking tmp db '%s' to active db '%s'", tmp_filename, registry.db_filename);
+ if (link(tmp_filename, registry.db_filename) == -1) {
+ error("Registry: cannot move file '%s' to '%s'. Saving registry DB failed!", tmp_filename,
+ registry.db_filename);
+
+ // move the .old back
+ debug(D_REGISTRY, "Registry: linking old db '%s' to active db '%s'", old_filename, registry.db_filename);
+ if(link(old_filename, registry.db_filename) == -1)
+ error("Registry: cannot move file '%s' to '%s'. Recovering the old registry DB failed!", old_filename, registry.db_filename);
+ }
+ else {
+ debug(D_REGISTRY, "Registry: removing tmp db '%s'", tmp_filename);
+ if(unlink(tmp_filename) == -1)
+ error("Registry: cannot remove tmp registry file '%s'", tmp_filename);
+
+ // it has been moved successfully
+ // discard the current registry log
+ registry_log_recreate();
+ }
+ }
-int registry_save(void) {
return -1;
}
-char *registry_request(const char *person_guid, const char *machine_guid, const char *url) {
+static inline size_t registry_load(void) {
+ char *s, buf[4096 + 1];
PERSON *p = NULL;
MACHINE *m = NULL;
+ URL *u = NULL;
+ size_t line = 0;
- // --- PERSON ---
- p = registry_person_get(person_guid);
- person_guid = p->guid;
+ debug(D_REGISTRY, "Registry: loading active db from: %s", registry.db_filename);
+ FILE *fp = fopen(registry.db_filename, "r");
+ if(!fp) {
+ error("Registry: cannot open registry file: %s", registry.db_filename);
+ return 0;
+ }
- // --- MACHINE ---
- m = registry_machine_get(machine_guid);
- machine_guid = m->guid;
+ size_t len = 0;
+ while((s = fgets_trim_len(buf, 4096, fp, &len))) {
+ line++;
+
+ debug(D_REGISTRY, "Registry: read line %zu to length %zu: %s", line, len, s);
+
+ switch(*s) {
+ case 'P': // person
+ m = NULL;
+ // verify it is valid
+ if(unlikely(len != 65 || s[1] != '\t' || s[10] != '\t' || s[19] != '\t' || s[28] != '\t' || s[65] != '\0'))
+ error("Registry person line %u is wrong (len = %zu).", line, len);
+
+ s[1] = s[10] = s[19] = s[28] = '\0';
+ p = registry_person_allocate(&s[29], strtoul(&s[2], NULL, 16));
+ p->last_t = strtoul(&s[11], NULL, 16);
+ p->usages = strtoul(&s[20], NULL, 16);
+ debug(D_REGISTRY, "Registry loaded person '%s', first: %u, last: %u, usages: %u", p->guid, p->first_t, p->last_t, p->usages);
+ break;
+
+ case 'M': // machine
+ p = NULL;
+ // verify it is valid
+ if(unlikely(len != 65 || s[1] != '\t' || s[10] != '\t' || s[19] != '\t' || s[28] != '\t' || s[65] != '\0'))
+ error("Registry person line %u is wrong (len = %zu).", line, len);
+
+ s[1] = s[10] = s[19] = s[28] = '\0';
+ m = registry_machine_allocate(&s[29], strtoul(&s[2], NULL, 16));
+ m->last_t = strtoul(&s[11], NULL, 16);
+ m->usages = strtoul(&s[20], NULL, 16);
+ debug(D_REGISTRY, "Registry loaded machine '%s', first: %u, last: %u, usages: %u", m->guid, m->first_t, m->last_t, m->usages);
+ break;
+
+ case 'U': // person URL
+ if(unlikely(!p)) {
+ error("Registry: ignoring line %zu, no person loaded: %s", line, s);
+ break;
+ }
+
+ // verify it is valid
+ if(len < 69 || s[1] != '\t' || s[10] != '\t' || s[19] != '\t' || s[28] != '\t' || s[31] != '\t' || s[68] != '\t')
+ error("Registry person URL line %u is wrong (len = %zu).", line, len);
+
+ s[1] = s[10] = s[19] = s[28] = s[31] = s[68] = '\0';
+ u = registry_url_allocate(&s[69]);
+
+ time_t first_t = strtoul(&s[2], NULL, 16);
+
+ m = registry_machine_find(&s[32]);
+ if(!m) m = registry_machine_allocate(&s[32], first_t);
+
+ PERSON_URL *pu = registry_person_url_allocate(p, m, u, first_t);
+ pu->last_t = strtoul(&s[11], NULL, 16);
+ pu->usages = strtoul(&s[20], NULL, 16);
+ pu->flags = strtoul(&s[29], NULL, 16);
+ debug(D_REGISTRY, "Registry loaded person URL '%s', machine '%s', first: %u, last: %u, usages: %u, flags: %02x", u->url, m->guid, pu->first_t, pu->last_t, pu->usages, pu->flags);
+ break;
+
+ case 'V': // machine URL
+ if(unlikely(!m)) {
+ error("Registry: ignoring line %zu, no machine loaded: %s", line, s);
+ break;
+ }
+
+ // verify it is valid
+ if(len < 32 || s[1] != '\t' || s[10] != '\t' || s[19] != '\t' || s[28] != '\t' || s[31] != '\t')
+ error("Registry person URL line %u is wrong (len = %zu).", line, len);
+
+ s[1] = s[10] = s[19] = s[28] = s[31] = '\0';
+ u = registry_url_allocate(&s[32]);
+
+ MACHINE_URL *mu = registry_machine_url_allocate(m, u, strtoul(&s[2], NULL, 16));
+ mu->last_t = strtoul(&s[11], NULL, 16);
+ mu->usages = strtoul(&s[20], NULL, 16);
+ mu->flags = strtoul(&s[29], NULL, 16);
+ debug(D_REGISTRY, "Registry loaded machine URL '%s', machine '%s', first: %u, last: %u, usages: %u, flags: %02x", u->url, m->guid, mu->first_t, mu->last_t, mu->usages, mu->flags);
+ break;
+
+ default:
+ error("Registry: ignoring line %zu of filename '%s': %s.", line, registry.db_filename, s);
+ break;
+ }
+ }
+ fclose(fp);
- // --- URL ---
- registry_url_update(p, m, url);
+ registry_log_load();
- registry_person_save(p);
- registry_machine_save(m);
- registry_save();
-
- return NULL;
+ return line;
}
+// ----------------------------------------------------------------------------
+// REGISTRY
+
void registry_init(void) {
- registry.persons = dictionary_create(DICTIONARY_FLAG_DEFAULT);
- if(!registry.persons)
- fatal("Registry: cannot create persons registry");
+ char filename[FILENAME_MAX + 1];
+
+ registry.pathname = config_get("registry", "registry db directory", VARLIB_DIR);
+ if(mkdir(registry.pathname, 0644) == -1 && errno != EEXIST)
+ error("Cannot create directory '%s'", registry.pathname);
+
+ snprintf(filename, FILENAME_MAX, "%s/%s", registry.pathname, "registry.db");
+ registry.db_filename = config_get("registry", "registry db file", filename);
+
+ snprintf(filename, FILENAME_MAX, "%s/%s", registry.pathname, "registry-log.db");
+ registry.log_filename = config_get("registry", "registry log file", filename);
+
+ registry.persons_count = 0;
+ registry.machines_count = 0;
+ registry.usages_count = 0;
+ registry.urls_count = 0;
+ registry.persons_urls_count = 0;
+ registry.machines_urls_count = 0;
+
+ debug(D_REGISTRY, "Registry: creating global registry dictionary for persons.");
+ registry.persons = dictionary_create(DICTIONARY_FLAGS);
+
+ debug(D_REGISTRY, "Registry: creating global registry dictionary for machines.");
+ registry.machines = dictionary_create(DICTIONARY_FLAGS);
+
+ debug(D_REGISTRY, "Registry: creating global registry dictionary for urls.");
+ registry.urls = dictionary_create(DICTIONARY_FLAGS);
+
+ registry_log_open();
+ registry_load();
+}
+
+void registry_free(void) {
+ while(registry.persons->values_index.root) {
+ PERSON *p = ((NAME_VALUE *)registry.persons->values_index.root)->value;
+
+ // fprintf(stderr, "\nPERSON: '%s', first: %u, last: %u, usages: %u\n", p->guid, p->first_t, p->last_t, p->usages);
+
+ while(p->urls->values_index.root) {
+ PERSON_URL *pu = ((NAME_VALUE *)p->urls->values_index.root)->value;
+
+ // fprintf(stderr, "\tURL: '%s', first: %u, last: %u, usages: %u, flags: 0x%02x\n", pu->url->url, pu->first_t, pu->last_t, pu->usages, pu->flags);
+
+ debug(D_REGISTRY, "Registry: deleting url '%s' from person '%s'", pu->url->url, p->guid);
+ dictionary_del(p->urls, pu->url->url);
+
+ debug(D_REGISTRY, "Registry: unlinking url '%s' from person", pu->url->url);
+ registry_url_unlink(pu->url);
+
+ debug(D_REGISTRY, "Registry: freeing person url");
+ free(pu);
+ }
+
+ debug(D_REGISTRY, "Registry: deleting person '%s' from persons registry", p->guid);
+ dictionary_del(registry.persons, p->guid);
+
+ debug(D_REGISTRY, "Registry: destroying URL dictionary of person '%s'", p->guid);
+ dictionary_destroy(p->urls);
+
+ debug(D_REGISTRY, "Registry: freeing person '%s'", p->guid);
+ free(p);
+ }
- registry.machines = dictionary_create(DICTIONARY_FLAG_DEFAULT);
- if(!registry.machines)
- fatal("Registry: cannot create machines registry");
+ while(registry.machines->values_index.root) {
+ MACHINE *m = ((NAME_VALUE *)registry.machines->values_index.root)->value;
+
+ // fprintf(stderr, "\nMACHINE: '%s', first: %u, last: %u, usages: %u\n", m->guid, m->first_t, m->last_t, m->usages);
+
+ while(m->urls->values_index.root) {
+ MACHINE_URL *mu = ((NAME_VALUE *)m->urls->values_index.root)->value;
+
+ // fprintf(stderr, "\tURL: '%s', first: %u, last: %u, usages: %u, flags: 0x%02x\n", mu->url->url, mu->first_t, mu->last_t, mu->usages, mu->flags);
+
+ //debug(D_REGISTRY, "Registry: destroying persons dictionary from url '%s'", mu->url->url);
+ //dictionary_destroy(mu->persons);
+
+ debug(D_REGISTRY, "Registry: deleting url '%s' from person '%s'", mu->url->url, m->guid);
+ dictionary_del(m->urls, mu->url->url);
+
+ debug(D_REGISTRY, "Registry: unlinking url '%s' from machine", mu->url->url);
+ registry_url_unlink(mu->url);
+
+ debug(D_REGISTRY, "Registry: freeing machine url");
+ free(mu);
+ }
+
+ debug(D_REGISTRY, "Registry: deleting machine '%s' from machines registry", m->guid);
+ dictionary_del(registry.machines, m->guid);
+
+ debug(D_REGISTRY, "Registry: destroying URL dictionary of machine '%s'", m->guid);
+ dictionary_destroy(m->urls);
+
+ debug(D_REGISTRY, "Registry: freeing machine '%s'", m->guid);
+ free(m);
+ }
+
+ debug(D_REGISTRY, "Registry: destroying persons dictionary");
+ dictionary_destroy(registry.persons);
+
+ debug(D_REGISTRY, "Registry: destroying machines dictionary");
+ dictionary_destroy(registry.machines);
+
+ debug(D_REGISTRY, "Registry: destroying urls dictionary");
+ dictionary_destroy(registry.urls);
+}
+
+
+// ----------------------------------------------------------------------------
+// TESTS
+
+int test1(int argc, char **argv) {
+
+ void print_stats(uint32_t requests, unsigned long long start, unsigned long long end) {
+ fprintf(stderr, " > SPEED: %u requests served in %0.2f seconds ( >>> %llu per second <<< )\n",
+ requests, (end-start) / 1000000.0, (unsigned long long)requests * 1000000ULL / (end-start));
+
+ fprintf(stderr, " > DB : persons %llu, machines %llu, unique URLs %llu, accesses %llu, URLs: for persons %llu, for machines %llu\n",
+ registry.persons_count, registry.machines_count, registry.urls_count, registry.usages_count,
+ registry.persons_urls_count, registry.machines_urls_count);
+ }
+
+ (void) argc;
+ (void) argv;
+
+ uint32_t u, users = 1000000;
+ uint32_t m, machines = 200000;
+ uint32_t machines2 = machines * 2;
+
+ char **users_guids = malloc(users * sizeof(char *));
+ char **machines_guids = malloc(machines2 * sizeof(char *));
+ char **machines_urls = malloc(machines2 * sizeof(char *));
+ unsigned long long start;
+
+ registry_init();
+
+ fprintf(stderr, "Generating %u machine guids\n", machines2);
+ for(m = 0; m < machines2 ;m++) {
+ uuid_t uuid;
+ machines_guids[m] = malloc(36+1);
+ uuid_generate(uuid);
+ uuid_unparse(uuid, machines_guids[m]);
+
+ char buf[FILENAME_MAX + 1];
+ snprintf(buf, FILENAME_MAX, "http://%u.netdata.rocks/", m+1);
+ machines_urls[m] = strdup(buf);
+
+ // fprintf(stderr, "\tmachine %u: '%s', url: '%s'\n", m + 1, machines_guids[m], machines_urls[m]);
+ }
+
+ start = timems();
+ fprintf(stderr, "\nGenerating %u users accessing %u machines\n", users, machines);
+ m = 0;
+ time_t now = time(NULL);
+ for(u = 0; u < users ; u++) {
+ if(++m == machines) m = 0;
+
+ PERSON *p = registry_request(NULL, machines_guids[m], machines_urls[m], now);
+ users_guids[u] = p->guid;
+ }
+ print_stats(u, start, timems());
+
+ start = timems();
+ fprintf(stderr, "\nAll %u users accessing again the same %u servers\n", users, machines);
+ m = 0;
+ now = time(NULL);
+ for(u = 0; u < users ; u++) {
+ if(++m == machines) m = 0;
+
+ PERSON *p = registry_request(users_guids[u], machines_guids[m], machines_urls[m], now);
+
+ if(p->guid != users_guids[u])
+ fprintf(stderr, "ERROR: expected to get user guid '%s' but git '%s'", users_guids[u], p->guid);
+ }
+ print_stats(u, start, timems());
+
+ start = timems();
+ fprintf(stderr, "\nAll %u users accessing a new server, out of the %u servers\n", users, machines);
+ m = 1;
+ now = time(NULL);
+ for(u = 0; u < users ; u++) {
+ if(++m == machines) m = 0;
+
+ PERSON *p = registry_request(users_guids[u], machines_guids[m], machines_urls[m], now);
+
+ if(p->guid != users_guids[u])
+ fprintf(stderr, "ERROR: expected to get user guid '%s' but git '%s'", users_guids[u], p->guid);
+ }
+ print_stats(u, start, timems());
+
+ start = timems();
+ fprintf(stderr, "\n%u random users accessing a random server, out of the %u servers\n", users, machines);
+ now = time(NULL);
+ for(u = 0; u < users ; u++) {
+ uint32_t tu = random() * users / RAND_MAX;
+ uint32_t tm = random() * machines / RAND_MAX;
+
+ PERSON *p = registry_request(users_guids[tu], machines_guids[tm], machines_urls[tm], now);
+
+ if(p->guid != users_guids[tu])
+ fprintf(stderr, "ERROR: expected to get user guid '%s' but git '%s'", users_guids[tu], p->guid);
+ }
+ print_stats(u, start, timems());
+
+ start = timems();
+ fprintf(stderr, "\n%u random users accessing a random server, out of %u servers\n", users, machines2);
+ now = time(NULL);
+ for(u = 0; u < users ; u++) {
+ uint32_t tu = random() * users / RAND_MAX;
+ uint32_t tm = random() * machines2 / RAND_MAX;
+
+ PERSON *p = registry_request(users_guids[tu], machines_guids[tm], machines_urls[tm], now);
+
+ if(p->guid != users_guids[tu])
+ fprintf(stderr, "ERROR: expected to get user guid '%s' but git '%s'", users_guids[tu], p->guid);
+ }
+ print_stats(u, start, timems());
+
+ for(m = 0; m < 10; m++) {
+ start = timems();
+ fprintf(stderr,
+ "\n%u random user accesses to a random server, out of %u servers,\n > using 1/10000 with a random url, 1/1000 with a mismatched url\n",
+ users * 2, machines2);
+ now = time(NULL);
+ for (u = 0; u < users * 2; u++) {
+ uint32_t tu = random() * users / RAND_MAX;
+ uint32_t tm = random() * machines2 / RAND_MAX;
+
+ char *url = machines_urls[tm];
+ char buf[FILENAME_MAX + 1];
+ if (random() % 10000 == 1234) {
+ snprintf(buf, FILENAME_MAX, "http://random.%ld.netdata.rocks/", random());
+ url = buf;
+ }
+ else if (random() % 1000 == 123)
+ url = machines_urls[random() * machines2 / RAND_MAX];
+
+ PERSON *p = registry_request(users_guids[tu], machines_guids[tm], url, now);
+
+ if (p->guid != users_guids[tu])
+ fprintf(stderr, "ERROR: expected to get user guid '%s' but git '%s'", users_guids[tu], p->guid);
+ }
+ print_stats(u, start, timems());
+ }
+
+ fprintf(stderr, "\n\nSAVE\n");
+ start = timems();
+ registry_save();
+ print_stats(registry.persons_count, start, timems());
+
+ fprintf(stderr, "\n\nCLEANUP\n");
+ start = timems();
+ registry_free();
+ print_stats(registry.persons_count, start, timems());
+ return 0;
}
+// ----------------------------------------------------------------------------
+// TESTING
+
int main(int argc, char **argv) {
+ debug_flags = 0xFFFFFFFF;
+ //test1(argc, argv);
+ //exit(0);
+
(void)argc;
(void)argv;
+
+ PERSON *p1, *p2;
+
+ fprintf(stderr, "\n\nINITIALIZATION\n");
+
registry_init();
+ int i = 2;
+
+ fprintf(stderr, "\n\nADDING ENTRY\n");
+ // p1 = registry_request("2c95abd0-1542-11e6-8c66-00508db7e9c9", "7c173980-145c-11e6-b86f-00508db7e9c1", "http://localhost:19999/", time(NULL));
+
+ if(0)
+ while(i--) {
+#ifdef REGISTRY_STDOUT_DUMP
+ fprintf(stderr, "\n\nADDING ENTRY\n");
+#endif /* REGISTRY_STDOUT_DUMP */
+ p1 = registry_request(NULL, "7c173980-145c-11e6-b86f-00508db7e9c1", "http://localhost:19999/", time(NULL));
+
+#ifdef REGISTRY_STDOUT_DUMP
+ fprintf(stderr, "\n\nADDING ANOTHER URL\n");
+#endif /* REGISTRY_STDOUT_DUMP */
+ p1 = registry_request(p1->guid, "7c173980-145c-11e6-b86f-00508db7e9c1", "http://127.0.0.1:19999/", time(NULL));
+
+#ifdef REGISTRY_STDOUT_DUMP
+ fprintf(stderr, "\n\nADDING ANOTHER URL\n");
+#endif /* REGISTRY_STDOUT_DUMP */
+ p1 = registry_request(p1->guid, "7c173980-145c-11e6-b86f-00508db7e9c1", "http://my.server:19999/", time(NULL));
+
+#ifdef REGISTRY_STDOUT_DUMP
+ fprintf(stderr, "\n\nADDING ANOTHER MACHINE\n");
+#endif /* REGISTRY_STDOUT_DUMP */
+ p1 = registry_request(p1->guid, "7c173980-145c-11e6-b86f-00508db7e9c1", "http://my.server:19999/", time(NULL));
+
+#ifdef REGISTRY_STDOUT_DUMP
+ fprintf(stderr, "\n\nADDING ANOTHER PERSON\n");
+#endif /* REGISTRY_STDOUT_DUMP */
+ p2 = registry_request(NULL, "7c173980-145c-11e6-b86f-00508db7e9c3", "http://localhost:19999/", time(NULL));
+
+#ifdef REGISTRY_STDOUT_DUMP
+ fprintf(stderr, "\n\nADDING ANOTHER MACHINE\n");
+#endif /* REGISTRY_STDOUT_DUMP */
+ p2 = registry_request(p2->guid, "7c173980-145c-11e6-b86f-00508db7e9c3", "http://localhost:19999/", time(NULL));
+ }
+
+ fprintf(stderr, "\n\nSAVE\n");
+ registry_save();
+
+ fprintf(stderr, "\n\nCLEANUP\n");
+ registry_free();
return 0;
}
projects / netdata.git / blobdiff