#include <sys/file.h>
#include <fcntl.h>
#include "database.h"
+#include "configuration.h"
#include "subscription.h"
+#include "tags.h"
#include "util.h"
#include "config.h"
return r; \
}
+int blerg_init() {
+ if (!blerg_configuration_init()) {
+ return 0;
+ }
+ return 1;
+}
+
uint64_t blerg_get_record_count(struct blerg *blerg) {
uint64_t count;
flock(blerg->meta_fd, LOCK_SH);
if (blerg->data != NULL)
munmap(blerg->data, blerg->data_size);
fstat(blerg->data_fd, &st);
- if (st.st_size == 0) {
+ blerg->data_size = st.st_size;
+ if (blerg->data_size == 0) {
/* Can't map an empty data file. */
return 1;
}
- blerg->data = (char *) mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, blerg->data_fd, 0);
+ blerg->data = (char *) mmap(NULL, blerg->data_size, PROT_READ, MAP_SHARED, blerg->data_fd, 0);
if (blerg->data == MAP_FAILED) {
perror("Could not remap data");
return 0;
}
- blerg->data_size = st.st_size;
return 1;
}
int blerg_segment_switch(struct blerg *blerg, int new_segment) {
- char filename[512];
+ char filename[FILENAME_MAX];
uint64_t max_sequence_no = blerg_get_record_count(blerg);
struct stat st;
blerg_segment_close(blerg);
/* Load and map the index */
- snprintf(filename, 512, "%s/index%d", blerg->base_path, new_segment);
+ snprintf(filename, FILENAME_MAX, "%s/index%d", blerg->base_path, new_segment);
blerg->index_fd = open(filename, O_RDWR | O_CREAT, 0600);
if (blerg->index_fd == -1) {
perror("Could not open index");
}
/* Load data file */
- sprintf(filename, "%s/data%d", blerg->base_path, new_segment);
+ snprintf(filename, FILENAME_MAX, "%s/data%d", blerg->base_path, new_segment);
blerg->data_fd = open(filename, O_RDWR | O_APPEND | O_CREAT, 0600);
if (blerg->data_fd == -1) {
perror("Could not open data");
}
int blerg_exists(const char *name) {
- int namelen = strlen(name);
- char filename[512];
+ char filename[FILENAME_MAX];
if (!valid_name(name)) {
fprintf(stderr, "Invalid name\n");
return 0;
}
- snprintf(filename, 512, "%s/%s", DATA_PATH, name);
+ snprintf(filename, FILENAME_MAX, "%s/%s", blergconf.data_path, name);
if (access(filename, F_OK) == -1)
return 0;
else
struct blerg *blerg_open(const char *name) {
int namelen = strlen(name);
- char filename[512];
+ char filename[FILENAME_MAX];
struct stat st;
- uint64_t sequence;
if (!valid_name(name)) {
fprintf(stderr, "Invalid name\n");
blerg->data = NULL;
/* Make the directory if it doesn't exist */
- blerg->base_path = malloc(512);
- snprintf(blerg->base_path, 512, "%s/%s", DATA_PATH, name);
+ blerg->base_path = malloc(FILENAME_MAX);
+ snprintf(blerg->base_path, FILENAME_MAX, "%s/%s", blergconf.data_path, name);
if (access(blerg->base_path, F_OK) == -1)
mkdir(blerg->base_path, 0755);
/* Open and map metadata */
- snprintf(filename, 512, "%s/meta", blerg->base_path);
+ snprintf(filename, FILENAME_MAX, "%s/meta", blerg->base_path);
blerg->meta_fd = open(filename, O_RDWR | O_CREAT, 0600);
if (blerg->meta_fd == -1) {
perror("Could not open metadata");
return 1;
}
-int blerg_store(struct blerg *blerg, const char *data, int len) {
+uint64_t blerg_store(struct blerg *blerg, const char *data, int length) {
struct stat st;
int n;
- CHECK_VALID_BLERG(-1)
+ CHECK_VALID_BLERG(BLERG_INVALID_RECORD)
- if (len > MAX_RECORD_SIZE || len <= 0) {
- fprintf(stderr, "len out of bounds\n");
- return -1;
+ if (length > MAX_RECORD_SIZE || length <= 0) {
+ fprintf(stderr, "length out of bounds\n");
+ return BLERG_INVALID_RECORD;
}
flock(blerg->index_fd, LOCK_EX);
uint64_t record = blerg_get_record_count(blerg);
if (record == -1) { /* Intentional signed-unsigned coercion */
fprintf(stderr, "Could not find free record\n");
- return -1;
+ return BLERG_INVALID_RECORD;
}
int segment = record / RECORDS_PER_SEGMENT;
if (segment != blerg->current_segment)
int curpos = st.st_size;
/* Write data to the data log */
- n = write(blerg->data_fd, data, len);
- if (n < len) {
+ n = write(blerg->data_fd, data, length);
+ if (n < length) {
perror("Could not write data");
/* Truncate anything we may have written */
ftruncate(blerg->data_fd, curpos);
- return -1;
+ return BLERG_INVALID_RECORD;
}
/* Update the index */
blerg->index[seg_rec].flags = 0x0001;
blerg->index[seg_rec].offset = curpos;
- blerg->index[seg_rec].length = len;
+ blerg->index[seg_rec].length = length;
blerg->index[seg_rec].timestamp = time(NULL);
/* And finally increment the record count */
flock(blerg->data_fd, LOCK_UN);
flock(blerg->index_fd, LOCK_UN);
- /* Now do those dirty microblogging deeds */
- tag_scan(blerg->name, data, len, record);
- subscription_notify(blerg->name, record);
+ if (!blerg_get_status(blerg, BLERGSTATUS_MUTED)) {
+ /* Now do those dirty microblogging deeds */
+ tag_scan(blerg->name, data, length, record);
+ subscription_notify(blerg->name, record);
+ }
return record;
}
-int blerg_fetch(struct blerg *blerg, int record, char **data, int *length) {
+int blerg_fetch(struct blerg *blerg, uint64_t record, char **data, int *length) {
CHECK_VALID_BLERG(0)
- if (record < 0 || record >= blerg_get_record_count(blerg)) {
+ if (record == BLERG_INVALID_RECORD || record >= blerg_get_record_count(blerg)) {
fprintf(stderr, "Invalid record\n");
return 0;
}
return 1;
}
-time_t blerg_get_timestamp(struct blerg *blerg, int record) {
+time_t blerg_get_timestamp(struct blerg *blerg, uint64_t record) {
CHECK_VALID_BLERG(0)
- if (record < 0 || record >= blerg_get_record_count(blerg)) {
+ if (record == BLERG_INVALID_RECORD || record >= blerg_get_record_count(blerg)) {
fprintf(stderr, "Invalid record\n");
return 0;
}
CHECK_VALID_BLERG(0)
return blerg->meta->subscription_mark;
}
+
+int blerg_set_status(struct blerg *blerg, uint32_t status, int v) {
+ CHECK_VALID_BLERG(0)
+ if (v) {
+ blerg->meta->status |= status;
+ } else {
+ blerg->meta->status &= ~status;
+ }
+ return 1;
+}
+
+int blerg_get_status(struct blerg *blerg, uint32_t status) {
+ CHECK_VALID_BLERG(0)
+ return (blerg->meta->status & status) > 0;
+}
projects / blerg.git / blobdiff