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feature/extract: dump the specified address to stdout and exit

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similar to `--connect-and-read` except for file-like addresses; allows such
things as:

```
$ uwsgi --extract data://0
$ uwsgi --extract sym://embedded_json
$ uwsgi --extract http://me.local/config.xml
$ uwsgi --extract section://rootfs.tar.gz
$ uwsgi --ini exec://"uwsgi --extract section://rootfs.tar.gz | \
        tar xz && cat rootfs/config.ini"
```

...the latter of which embeds/extracts a complete rootfs for immediate use!
combined with embedded configs + declare-options, one can construct a self-
extracting -- single-file -- app that managed it's own plugins, configs,
databases, shared libs, [...]
This commit is contained in:
C Anthony Risinger
2012-11-20 09:48:29 -06:00
committed by C Anthony Risinger
parent 5f93d93cc1
commit e7f694cdc5
2 changed files with 18 additions and 1 deletions
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core/uwsgi.c
+17 -1
View File
@@ -105,7 +105,8 @@ static struct uwsgi_option uwsgi_base_options[] = {
{"suspend", required_argument, 0, "suspend an instance", uwsgi_opt_pidfile_signal, (void *) SIGTSTP, UWSGI_OPT_IMMEDIATE},
{"resume", required_argument, 0, "resume an instance", uwsgi_opt_pidfile_signal, (void *) SIGTSTP, UWSGI_OPT_IMMEDIATE},
{"connect-and-read", required_argument, 0, "connect to a scoekt and wait for data from it", uwsgi_opt_connect_and_read, NULL, UWSGI_OPT_IMMEDIATE},
{"connect-and-read", required_argument, 0, "connect to a socket and wait for data from it", uwsgi_opt_connect_and_read, NULL, UWSGI_OPT_IMMEDIATE},
{"extract", required_argument, 0, "fetch/dump any supported address to stdout", uwsgi_opt_extract, NULL, UWSGI_OPT_IMMEDIATE},
{"listen", required_argument, 'l', "set the socket listen queue size", uwsgi_opt_set_int, &uwsgi.listen_queue, 0},
{"max-vars", required_argument, 'v', "set the amount of internal iovec/vars structures", uwsgi_opt_max_vars, NULL, 0},
@@ -3880,3 +3881,18 @@ void uwsgi_opt_connect_and_read(char *opt, char *address, void *foobar) {
uwsgi_log("%.*s", (int) len, buf);
}
}
void uwsgi_opt_extract(char *opt, char *address, void *foobar) {
int len = 0;
char *buf;
buf = uwsgi_open_and_read(address, &len, 0, NULL);
if (len > 0) {
if (write(1, buf, len) != len) {
uwsgi_error("write()");
exit(1);
};
};
exit(0);
}
uwsgi.h
+1
View File
@@ -3216,6 +3216,7 @@ void manage_cluster_message(char *, int);
void uwsgi_opt_add_custom_option(char *, char *, void *);
void uwsgi_opt_cflags(char *, char *, void *);
void uwsgi_opt_connect_and_read(char *, char *, void *);
void uwsgi_opt_extract(char *, char *, void *);
struct uwsgi_string_list *uwsgi_string_list_has_item(struct uwsgi_string_list *, char *, size_t);