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#include <arpa/inet.h>
#include <assert.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <zip.h>
#define MICO_HEADER "\211MiC\r\n\032\n"
struct event {
int64_t t;
double v;
};
struct metric {
char *key;
struct event *value; // array
};
int
timecmp(const void *a, const void *b)
{
struct event *ea = (struct event *)a;
struct event *eb = (struct event *)b;
if (ea->t < eb->t)
return -1;
else if (ea->t > eb->t)
return 1;
else
return 0; // needed?
}
struct bitfile {
FILE *output;
char *mem;
size_t memlen;
size_t nevents;
uint64_t bitbuf; // value of bits in write buffer
int bitcount; // number of bits in write buffer
};
static void
putbits1_msb(struct bitfile *bf, int count, uint32_t bits)
{
assert(count >= 1 && count <= 57);
bf->bitbuf <<= count;
bf->bitcount += count;
bf->bitbuf |= bits; /* mask? */
while (bf->bitcount > 8) {
bf->bitcount -= 8;
putc_unlocked((bf->bitbuf >> bf->bitcount) & 0xff, bf->output);
}
}
static void
putbits1_flush(struct bitfile *bf)
{
for (int i = bf->bitcount + 8; i >= 0; i--)
putbits1_msb(bf, 1, 0);
fflush(bf->output);
}
static void
putsigned(struct bitfile *bf, int count, int v)
{
if (v < 0)
putbits1_msb(bf, count, (1 << (count - 1)) - (v + 1));
else
putbits1_msb(bf, count, v);
}
void
put1(struct bitfile *bf, int64_t v)
{
if (v == 0) {
putbits1_msb(bf, 1, 0x0);
return;
}
if (v >= -64 && v <= 63) {
putbits1_msb(bf, 2, 0x2);
putsigned(bf, 7, v);
return;
}
if (v >= -256 && v <= 255) {
putbits1_msb(bf, 3, 0x6);
putsigned(bf, 9, v);
return;
}
if (v >= -2048 && v <= 2047) {
putbits1_msb(bf, 4, 0xe);
putsigned(bf, 12, v);
return;
}
putbits1_msb(bf, 4, 0xf);
putsigned(bf, 32, v >> 32);
putbits1_msb(bf, 32, v & 0xffffffff);
}
static struct bitfile ts, vs;
char *filename;
zip_t *zip;
void
reset_stream()
{
ts = (struct bitfile){ 0 };
vs = (struct bitfile){ 0 };
ts.output = open_memstream(&ts.mem, &ts.memlen);
vs.output = open_memstream(&vs.mem, &vs.memlen);
fwrite(MICO_HEADER, 1, 8, ts.output);
fwrite(MICO_HEADER, 1, 8, vs.output);
putbits1_msb(&ts, 32, 0);
putbits1_msb(&ts, 32, 0);
putbits1_msb(&vs, 32, 0);
putbits1_msb(&vs, 32, 0);
}
#define htonll(x) ((1==htonl(1)) ? (x) : ((uint64_t)htonl((x) & 0xFFFFFFFF) << 32) | htonl((x) >> 32))
void
write_stream(char *name)
{
putbits1_flush(&ts);
putbits1_flush(&vs);
char prefix[255];
char path[255];
strcpy(prefix, name);
char *s = strchr(prefix, '{');
if (!s) {
abort();
}
*s = '/';
s = strrchr(prefix, '}');
if (s)
*s = 0;
/* patch in length */
uint64_t nevents = htonll(ts.nevents);
memcpy(ts.mem + 8, &nevents, sizeof nevents);
memcpy(vs.mem + 8, &nevents, sizeof nevents);
// time_t mtime = metrics[m].value[0].t / 1000;
snprintf(path, sizeof path, "%s/time.dd", prefix);
zip_source_t *buft = zip_source_buffer(zip,
ts.mem, ts.memlen, 0);
int jj= zip_file_add(zip, path, buft, ZIP_FL_ENC_UTF_8);
printf("index of %s = %d\n", path, jj);
if (jj < 0) {
printf("error adding file: %s\n", zip_strerror(zip));
}
// zip_file_set_mtime(zip, jj, mtime, 0);
snprintf(path, sizeof path, "%s/data.d", prefix);
zip_source_t *bufv = zip_source_buffer(zip,
vs.mem, vs.memlen, 0);
jj= zip_file_add(zip, path, bufv, ZIP_FL_ENC_UTF_8);
printf("index of %s = %d\n", path, jj);
if (jj < 0) {
printf("error adding file: %s\n", zip_strerror(zip));
}
// zip_file_set_mtime(zip, jj, mtime, 0);
// note that data must be kept in memory until zip_close
// actually writes the archive.
// close and reopen the zip to force write and free all buffers
zip_close(zip);
zip = zip_open(filename, 0, 0);
if (!zip)
exit(-1);
free(ts.mem);
free(vs.mem);
}
int
main(int argc, char *argv[])
{
char name[255];
char lastname[255];
char *line = 0;
size_t linebuflen = 0;
ssize_t linelen = 0;
if (argc < 2) {
fprintf(stderr, "usage: %s output.zip\n", argv[0]);
exit(-1);
}
filename = argv[1];
zip = zip_open(filename, ZIP_CREATE | ZIP_TRUNCATE, 0);
if (!zip)
exit(-1);
int64_t t, pt = 0, ppt = 0;
double v, pv = 0.0;
while ((linelen = getdelim(&line, &linebuflen, '\n', stdin)) >= 0) {
char *start = strchr(line, ' ');
if (!start) break;
char *start2 = strchr(start+1, ' ');
if (!start2) break;
char *eend;
v = strtod(start, &eend);
t = strtoll(eend+1, 0, 10);
if (start - line > (ssize_t)sizeof name) {
fprintf(stderr, "metric too long: %s\n", line);
continue;
}
memcpy(name, line, start-line);
name[start-line] = 0;
if (strcmp(name, lastname) != 0) {
if (*lastname)
write_stream(lastname);
reset_stream();
pt = ppt = 0;
pv = 0.0;
}
put1(&ts, (t - pt) - (pt - ppt));
put1(&vs, (int64_t)((v - pv) * 10000));
ts.nevents++;
vs.nevents++;
ppt = pt;
pt = t;
pv = v;
strcpy(lastname, name);
}
if (*name)
write_stream(name);
zip_close(zip);
}
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