/
groonga.c
2524 lines (2365 loc) · 73.2 KB
/
groonga.c
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/* -*- c-basic-offset: 2 -*- */
/*
Copyright(C) 2009-2013 Brazil
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License version 2.1 as published by the Free Software Foundation.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifdef WIN32
# define GROONGA_MAIN
#endif /* WIN32 */
#include "lib/groonga_in.h"
#include "lib/com.h"
#include "lib/ctx_impl.h"
#include "lib/proc.h"
#include "lib/db.h"
#include "lib/util.h"
#include <string.h>
#include <stdio.h>
#include <ctype.h>
#include <fcntl.h>
#ifdef HAVE_SYS_WAIT_H
# include <sys/wait.h>
#endif /* HAVE_SYS_WAIT_H */
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif /* HAVE_SYS_SOCKET_H */
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif /* HAVE_NETINET_IN_H */
#ifdef HAVE_SYS_RESOURCE_H
# include <sys/resource.h>
#endif /* HAVE_SYS_RESOURCE_H */
#ifdef HAVE_SYS_SYSCTL_H
# include <sys/sysctl.h>
#endif /* HAVE_SYS_SYSCTL_H */
#ifndef USE_MSG_NOSIGNAL
# ifdef MSG_NOSIGNAL
# undef MSG_NOSIGNAL
# endif
# define MSG_NOSIGNAL 0
#endif /* USE_MSG_NOSIGNAL */
#ifndef STDIN_FILENO
# define STDIN_FILENO 0
#endif /* STDIN_FILENO */
#ifndef STDOUT_FILENO
# define STDOUT_FILENO 1
#endif /* STDOUT_FILENO */
#ifndef STDERR_FILENO
# define STDERR_FILENO 2
#endif /* STDERR_FILENO */
#define DEFAULT_PORT 10041
#define DEFAULT_DEST "localhost"
#define DEFAULT_MAX_NFTHREADS 8
#define MAX_CON 0x10000
#define RLIMIT_NOFILE_MINIMUM 4096
static char bind_address[HOST_NAME_MAX + 1];
static char hostname[HOST_NAME_MAX + 1];
static int port = DEFAULT_PORT;
static int batchmode;
static int number_of_lines = 0;
static int newdb;
static int useql;
static grn_bool is_daemon_mode = GRN_FALSE;
static int (*do_client)(int argc, char **argv);
static int (*do_server)(char *path);
static const char *pid_file_path = NULL;
static const char *input_path = NULL;
static FILE *output = NULL;
static int ready_notify_pipe[2];
#define PIPE_READ 0
#define PIPE_WRITE 1
static grn_encoding encoding;
static grn_command_version default_command_version;
static int64_t default_match_escalation_threshold;
static int log_level;
static int
grn_rc_to_exit_code(grn_rc rc)
{
if (rc == GRN_SUCCESS) {
return EXIT_SUCCESS;
} else {
return EXIT_FAILURE;
}
}
#ifdef GRN_WITH_LIBEDIT
#include <locale.h>
#include <histedit.h>
static EditLine *line_editor = NULL;
static HistoryW *line_editor_history = NULL;
static HistEventW line_editor_history_event;
static char line_editor_history_path[PATH_MAX] = "";
static const wchar_t *
line_editor_prompt(EditLine *e __attribute__((unused)))
{
return L"> ";
}
static const wchar_t * const line_editor_editor = L"emacs";
static void
line_editor_init(int argc __attribute__((unused)), char *argv[])
{
const char * const HOME_PATH = getenv("HOME");
const char * const HISTORY_PATH = "/.groonga-history";
setlocale(LC_ALL, "");
if (strlen(HOME_PATH) + strlen(HISTORY_PATH) < PATH_MAX) {
strcpy(line_editor_history_path, HOME_PATH);
strcat(line_editor_history_path, HISTORY_PATH);
} else {
line_editor_history_path[0] = '\0';
}
line_editor_history = history_winit();
history_w(line_editor_history, &line_editor_history_event, H_SETSIZE, 200);
if (line_editor_history_path[0]) {
history_w(line_editor_history, &line_editor_history_event,
H_LOAD, line_editor_history_path);
}
line_editor = el_init(argv[0], stdin, stdout, stderr);
el_wset(line_editor, EL_PROMPT, &line_editor_prompt);
el_wset(line_editor, EL_EDITOR, line_editor_editor);
el_wset(line_editor, EL_HIST, history_w, line_editor_history);
el_source(line_editor, NULL);
}
static void
line_editor_fin(void)
{
if (line_editor) {
el_end(line_editor);
if (line_editor_history) {
if (line_editor_history_path[0]) {
history_w(line_editor_history, &line_editor_history_event,
H_SAVE, line_editor_history_path);
}
history_wend(line_editor_history);
}
}
}
static grn_rc
line_editor_fgets(grn_ctx *ctx, grn_obj *buf)
{
grn_rc rc = GRN_SUCCESS;
const wchar_t *line;
int nchar;
line = el_wgets(line_editor, &nchar);
if (nchar > 0) {
int i;
char multibyte_buf[MB_CUR_MAX];
size_t multibyte_len;
mbstate_t ps;
history_w(line_editor_history, &line_editor_history_event, H_ENTER, line);
memset(&ps, 0, sizeof(ps));
wcrtomb(NULL, L'\0', &ps);
for (i = 0; i < nchar; i++) {
multibyte_len = wcrtomb(multibyte_buf, line[i], &ps);
if (multibyte_len == (size_t)-1) {
GRN_LOG(ctx, GRN_LOG_WARNING,
"[prompt][libedit] failed to read input: %s", strerror(errno));
rc = GRN_INVALID_ARGUMENT;
} else {
GRN_TEXT_PUT(ctx, buf, multibyte_buf, multibyte_len);
}
}
} else {
rc = GRN_END_OF_DATA;
}
return rc;
}
#endif /* GRN_WITH_LIBEDIT */
inline static grn_rc
read_next_line(grn_ctx *ctx, grn_obj *buf)
{
static int the_first_read = GRN_TRUE;
grn_rc rc = GRN_SUCCESS;
if (!batchmode) {
#ifdef GRN_WITH_LIBEDIT
rc = line_editor_fgets(ctx, buf);
#else
fprintf(stderr, "> ");
rc = grn_text_fgets(ctx, buf, stdin);
#endif
} else {
rc = grn_text_fgets(ctx, buf, stdin);
if (rc != GRN_END_OF_DATA) {
number_of_lines++;
}
}
if (the_first_read && GRN_TEXT_LEN(buf) > 0) {
const char bom[] = {0xef, 0xbb, 0xbf};
if (GRN_CTX_GET_ENCODING(ctx) == GRN_ENC_UTF8 &&
GRN_TEXT_LEN(buf) > 3 && !memcmp(GRN_TEXT_VALUE(buf), bom, 3)) {
grn_obj buf_without_bom;
GRN_TEXT_INIT(&buf_without_bom, 0);
GRN_TEXT_PUT(ctx, &buf_without_bom,
GRN_TEXT_VALUE(buf) + 3, GRN_TEXT_LEN(buf) - 3);
GRN_TEXT_SET(ctx, buf,
GRN_TEXT_VALUE(&buf_without_bom),
GRN_TEXT_LEN(&buf_without_bom));
grn_obj_unlink(ctx, &buf_without_bom);
}
the_first_read = GRN_FALSE;
}
if (GRN_TEXT_LEN(buf) > 0 &&
GRN_TEXT_VALUE(buf)[GRN_TEXT_LEN(buf) - 1] == '\n') {
grn_bulk_truncate(ctx, buf, GRN_TEXT_LEN(buf) - 1);
}
if (GRN_TEXT_LEN(buf) > 0 &&
GRN_TEXT_VALUE(buf)[GRN_TEXT_LEN(buf) - 1] == '\r') {
grn_bulk_truncate(ctx, buf, GRN_TEXT_LEN(buf) - 1);
}
return rc;
}
inline static grn_rc
prompt(grn_ctx *ctx, grn_obj *buf)
{
grn_rc rc = GRN_SUCCESS;
grn_bool need_next_line = GRN_TRUE;
GRN_BULK_REWIND(buf);
while (need_next_line) {
rc = read_next_line(ctx, buf);
if (rc == GRN_SUCCESS &&
GRN_TEXT_LEN(buf) > 0 &&
GRN_TEXT_VALUE(buf)[GRN_TEXT_LEN(buf) - 1] == '\\') {
grn_bulk_truncate(ctx, buf, GRN_TEXT_LEN(buf) - 1);
need_next_line = GRN_TRUE;
} else {
need_next_line = GRN_FALSE;
}
}
return rc;
}
typedef enum {
grn_http_request_type_none = 0,
grn_http_request_type_get,
grn_http_request_type_post
} grn_http_request_type;
static void
output_envelope(grn_ctx *ctx, grn_rc rc, grn_obj *head, grn_obj *body, grn_obj *foot)
{
grn_output_envelope(ctx, rc, head, body, foot, input_path, number_of_lines);
}
static void
s_output(grn_ctx *ctx, int flags, void *arg)
{
if (ctx && ctx->impl && (flags & GRN_CTX_TAIL)) {
grn_obj *buf = ctx->impl->outbuf;
grn_obj *command;
if (GRN_TEXT_LEN(buf) || ctx->rc) {
FILE * stream = (FILE *) arg;
grn_obj head, foot;
GRN_TEXT_INIT(&head, 0);
GRN_TEXT_INIT(&foot, 0);
output_envelope(ctx, ctx->rc, &head, buf, &foot);
fwrite(GRN_TEXT_VALUE(&head), 1, GRN_TEXT_LEN(&head), stream);
fwrite(GRN_TEXT_VALUE(buf), 1, GRN_TEXT_LEN(buf), stream);
fwrite(GRN_TEXT_VALUE(&foot), 1, GRN_TEXT_LEN(&foot), stream);
fputc('\n', stream);
fflush(stream);
GRN_BULK_REWIND(buf);
GRN_OBJ_FIN(ctx, &head);
GRN_OBJ_FIN(ctx, &foot);
}
command = GRN_CTX_USER_DATA(ctx)->ptr;
GRN_BULK_REWIND(command);
}
}
static int
do_alone(int argc, char **argv)
{
int exit_code = EXIT_FAILURE;
char *path = NULL;
grn_obj *db;
grn_ctx ctx_, *ctx = &ctx_;
grn_ctx_init(ctx, (useql ? GRN_CTX_USE_QL : 0)|(batchmode ? GRN_CTX_BATCH_MODE : 0));
if (argc > 0 && argv) { path = *argv++; argc--; }
db = (newdb || !path) ? grn_db_create(ctx, path, NULL) : grn_db_open(ctx, path);
if (db) {
grn_obj command;
GRN_TEXT_INIT(&command, 0);
GRN_CTX_USER_DATA(ctx)->ptr = &command;
grn_ctx_recv_handler_set(ctx, s_output, output);
if (!argc) {
grn_obj text;
GRN_TEXT_INIT(&text, 0);
while (prompt(ctx, &text) != GRN_END_OF_DATA) {
GRN_TEXT_PUT(ctx, &command, GRN_TEXT_VALUE(&text), GRN_TEXT_LEN(&text));
grn_ctx_send(ctx, GRN_TEXT_VALUE(&text), GRN_TEXT_LEN(&text), 0);
if (ctx->stat == GRN_CTX_QUIT) { break; }
}
exit_code = grn_rc_to_exit_code(ctx->rc);
grn_obj_unlink(ctx, &text);
} else {
grn_rc rc;
rc = grn_ctx_sendv(ctx, argc, argv, 0);
exit_code = grn_rc_to_exit_code(rc);
}
grn_obj_unlink(ctx, &command);
grn_obj_close(ctx, db);
} else {
fprintf(stderr, "db open failed (%s): %s\n", path, ctx->errbuf);
}
grn_ctx_fin(ctx);
return exit_code;
}
static int
c_output(grn_ctx *ctx)
{
int flags;
char *str;
unsigned int str_len;
do {
grn_ctx_recv(ctx, &str, &str_len, &flags);
/*
if (ctx->rc) {
fprintf(stderr, "grn_ctx_recv failed\n");
return -1;
}
*/
if (str_len || ctx->rc) {
grn_obj head, body, foot;
GRN_TEXT_INIT(&head, 0);
GRN_TEXT_INIT(&body, GRN_OBJ_DO_SHALLOW_COPY);
GRN_TEXT_INIT(&foot, 0);
GRN_TEXT_SET(ctx, &body, str, str_len);
output_envelope(ctx, ctx->rc, &head, &body, &foot);
fwrite(GRN_TEXT_VALUE(&head), 1, GRN_TEXT_LEN(&head), output);
fwrite(GRN_TEXT_VALUE(&body), 1, GRN_TEXT_LEN(&body), output);
fwrite(GRN_TEXT_VALUE(&foot), 1, GRN_TEXT_LEN(&foot), output);
fputc('\n', output);
fflush(output);
GRN_OBJ_FIN(ctx, &head);
GRN_OBJ_FIN(ctx, &body);
GRN_OBJ_FIN(ctx, &foot);
}
} while ((flags & GRN_CTX_MORE));
return 0;
}
static int
g_client(int argc, char **argv)
{
int exit_code = EXIT_FAILURE;
grn_ctx ctx_, *ctx = &ctx_;
const char *hostname = DEFAULT_DEST;
if (argc > 0 && argv) { hostname = *argv++; argc--; }
grn_ctx_init(ctx, (batchmode ? GRN_CTX_BATCH_MODE : 0));
if (!grn_ctx_connect(ctx, hostname, port, 0)) {
if (!argc) {
grn_obj text;
GRN_TEXT_INIT(&text, 0);
while (prompt(ctx, &text) != GRN_END_OF_DATA) {
grn_ctx_send(ctx, GRN_TEXT_VALUE(&text), GRN_TEXT_LEN(&text), 0);
exit_code = grn_rc_to_exit_code(ctx->rc);
if (ctx->rc != GRN_SUCCESS) { break; }
if (c_output(ctx)) { goto exit; }
if (ctx->stat == GRN_CTX_QUIT) { break; }
}
grn_obj_unlink(ctx, &text);
} else {
grn_rc rc;
rc = grn_ctx_sendv(ctx, argc, argv, 0);
exit_code = grn_rc_to_exit_code(rc);
if (c_output(ctx)) { goto exit; }
}
} else {
fprintf(stderr, "grn_ctx_connect failed (%s:%d)\n", hostname, port);
}
exit :
grn_ctx_fin(ctx);
return exit_code;
}
/* server */
typedef void (*grn_edge_dispatcher_func)(grn_ctx *ctx, grn_edge *edge);
typedef void (*grn_handler_func)(grn_ctx *ctx, grn_obj *msg);
static grn_com_queue ctx_new;
static grn_com_queue ctx_old;
static grn_mutex q_mutex;
static grn_cond q_cond;
static uint32_t nthreads = 0, nfthreads = 0, max_nfthreads;
static void
reset_ready_notify_pipe(void)
{
ready_notify_pipe[PIPE_READ] = 0;
ready_notify_pipe[PIPE_WRITE] = 0;
}
static void
close_ready_notify_pipe(void)
{
if (ready_notify_pipe[PIPE_READ] > 0) {
close(ready_notify_pipe[PIPE_READ]);
}
if (ready_notify_pipe[PIPE_WRITE] > 0) {
close(ready_notify_pipe[PIPE_WRITE]);
}
reset_ready_notify_pipe();
}
static void
send_ready_notify(void)
{
if (ready_notify_pipe[PIPE_WRITE] > 0) {
const char *ready_notify_message = "ready";
write(ready_notify_pipe[PIPE_WRITE],
ready_notify_message,
strlen(ready_notify_message));
}
close_ready_notify_pipe();
}
static int
daemonize(void)
{
int exit_code = EXIT_SUCCESS;
#ifndef WIN32
pid_t pid;
if (pipe(ready_notify_pipe) == -1) {
reset_ready_notify_pipe();
}
switch (fork()) {
case 0:
break;
case -1:
perror("fork");
return EXIT_FAILURE;
default:
wait(NULL);
if (ready_notify_pipe[PIPE_READ] > 0) {
int max_fd;
fd_set read_fds;
FD_ZERO(&read_fds);
FD_SET(ready_notify_pipe[PIPE_READ], &read_fds);
max_fd = ready_notify_pipe[PIPE_READ] + 1;
select(max_fd, &read_fds, NULL, NULL, NULL);
}
close_ready_notify_pipe();
_exit(EXIT_SUCCESS);
}
switch (fork()) {
case 0:
{
FILE *pid_file = NULL;
if (pid_file_path) {
pid_file = fopen(pid_file_path, "w");
}
pid = getpid();
if (!pid_file) {
fprintf(stderr, "%d\n", pid);
} else {
fprintf(pid_file, "%d\n", pid);
fclose(pid_file);
pid_file = NULL;
}
}
break;
case -1:
perror("fork");
return EXIT_FAILURE;
default:
close_ready_notify_pipe();
_exit(EXIT_SUCCESS);
}
{
int null_fd = GRN_OPEN("/dev/null", O_RDWR, 0);
if (null_fd != -1) {
dup2(null_fd, STDIN_FILENO);
dup2(null_fd, STDOUT_FILENO);
dup2(null_fd, STDERR_FILENO);
if (null_fd > STDERR_FILENO) { GRN_CLOSE(null_fd); }
}
}
#endif /* WIN32 */
return exit_code;
}
static void
clean_pid_file(void)
{
#ifndef WIN32
if (pid_file_path) {
unlink(pid_file_path);
}
#endif
}
static void
run_server_loop(grn_ctx *ctx, grn_com_event *ev)
{
while (!grn_com_event_poll(ctx, ev, 1000) && grn_gctx.stat != GRN_CTX_QUIT) {
grn_edge *edge;
while ((edge = (grn_edge *)grn_com_queue_deque(ctx, &ctx_old))) {
grn_obj *msg;
while ((msg = (grn_obj *)grn_com_queue_deque(ctx, &edge->send_old))) {
grn_msg_close(&edge->ctx, msg);
}
while ((msg = (grn_obj *)grn_com_queue_deque(ctx, &edge->recv_new))) {
grn_msg_close(ctx, msg);
}
grn_ctx_fin(&edge->ctx);
if (edge->com->has_sid && edge->com->opaque == edge) {
grn_com_close(ctx, edge->com);
}
grn_edges_delete(ctx, edge);
}
/* todo : log stat */
}
for (;;) {
MUTEX_LOCK(q_mutex);
if (nthreads == nfthreads) { break; }
MUTEX_UNLOCK(q_mutex);
grn_nanosleep(1000000);
}
{
grn_edge *edge;
GRN_HASH_EACH(ctx, grn_edges, id, NULL, NULL, &edge, {
grn_obj *obj;
while ((obj = (grn_obj *)grn_com_queue_deque(ctx, &edge->send_old))) {
grn_msg_close(&edge->ctx, obj);
}
while ((obj = (grn_obj *)grn_com_queue_deque(ctx, &edge->recv_new))) {
grn_msg_close(ctx, obj);
}
grn_ctx_fin(&edge->ctx);
if (edge->com->has_sid) {
grn_com_close(ctx, edge->com);
}
grn_edges_delete(ctx, edge);
});
}
{
grn_com *com;
GRN_HASH_EACH(ctx, ev->hash, id, NULL, NULL, &com, { grn_com_close(ctx, com); });
}
}
static int
run_server(grn_ctx *ctx, grn_obj *db, grn_com_event *ev,
grn_edge_dispatcher_func dispatcher, grn_handler_func handler)
{
int exit_code = EXIT_SUCCESS;
struct hostent *he;
if (!(he = gethostbyname(hostname))) {
send_ready_notify();
SERR("gethostbyname");
} else {
ev->opaque = db;
grn_edges_init(ctx, dispatcher);
if (!grn_com_sopen(ctx, ev, bind_address, port, handler, he)) {
send_ready_notify();
run_server_loop(ctx, ev);
exit_code = EXIT_SUCCESS;
} else {
send_ready_notify();
fprintf(stderr, "grn_com_sopen failed (%s:%d): %s\n",
bind_address, port, ctx->errbuf);
}
grn_edges_fin(ctx);
}
return exit_code;
}
static int
start_service(grn_ctx *ctx, const char *db_path,
grn_edge_dispatcher_func dispatcher, grn_handler_func handler)
{
int exit_code = EXIT_SUCCESS;
grn_com_event ev;
if (is_daemon_mode) {
exit_code = daemonize();
if (exit_code != EXIT_SUCCESS) {
return exit_code;
}
}
if (!grn_com_event_init(ctx, &ev, MAX_CON, sizeof(grn_com))) {
grn_obj *db;
db = (newdb || !db_path) ? grn_db_create(ctx, db_path, NULL) : grn_db_open(ctx, db_path);
if (db) {
exit_code = run_server(ctx, db, &ev, dispatcher, handler);
grn_obj_close(ctx, db);
} else {
fprintf(stderr, "db open failed (%s)\n", db_path);
exit_code = EXIT_FAILURE;
send_ready_notify();
}
grn_com_event_fin(ctx, &ev);
} else {
fprintf(stderr, "grn_com_event_init failed\n");
exit_code = EXIT_FAILURE;
send_ready_notify();
}
if (is_daemon_mode) {
clean_pid_file();
}
return exit_code;
}
typedef struct {
grn_obj body;
grn_msg *msg;
} ht_context;
static void
h_output(grn_ctx *ctx, int flags, void *arg)
{
grn_rc expr_rc = ctx->rc;
ht_context *hc = (ht_context *)arg;
grn_sock fd = hc->msg->u.fd;
grn_obj *body = &hc->body;
grn_obj head, foot, *outbuf = ctx->impl->outbuf;
if (!(flags & GRN_CTX_TAIL)) { return; }
GRN_TEXT_INIT(&head, 0);
GRN_TEXT_INIT(&foot, 0);
if (!expr_rc) {
output_envelope(ctx, expr_rc, &head, outbuf, &foot);
GRN_TEXT_SETS(ctx, body, "HTTP/1.1 200 OK\r\n");
GRN_TEXT_PUTS(ctx, body, "Connection: close\r\n");
GRN_TEXT_PUTS(ctx, body, "Content-Type: ");
GRN_TEXT_PUTS(ctx, body, grn_ctx_get_mime_type(ctx));
GRN_TEXT_PUTS(ctx, body, "\r\nContent-Length: ");
grn_text_lltoa(ctx, body,
GRN_TEXT_LEN(&head) + GRN_TEXT_LEN(outbuf) + GRN_TEXT_LEN(&foot));
GRN_TEXT_PUTS(ctx, body, "\r\n\r\n");
} else {
GRN_BULK_REWIND(outbuf);
output_envelope(ctx, expr_rc, &head, outbuf, &foot);
if (expr_rc == GRN_NO_SUCH_FILE_OR_DIRECTORY) {
GRN_TEXT_SETS(ctx, body, "HTTP/1.1 404 Not Found\r\n");
} else {
GRN_TEXT_SETS(ctx, body, "HTTP/1.1 500 Internal Server Error\r\n");
}
GRN_TEXT_PUTS(ctx, body, "Content-Type: ");
GRN_TEXT_PUTS(ctx, body, grn_ctx_get_mime_type(ctx));
GRN_TEXT_PUTS(ctx, body, "\r\n\r\n");
}
{
ssize_t ret, len;
#ifdef WIN32
WSABUF wsabufs[4];
wsabufs[0].buf = GRN_TEXT_VALUE(body);
wsabufs[0].len = GRN_TEXT_LEN(body);
wsabufs[1].buf = GRN_TEXT_VALUE(&head);
wsabufs[1].len = GRN_TEXT_LEN(&head);
wsabufs[2].buf = GRN_TEXT_VALUE(outbuf);
wsabufs[2].len = GRN_TEXT_LEN(outbuf);
wsabufs[3].buf = GRN_TEXT_VALUE(&foot);
wsabufs[3].len = GRN_TEXT_LEN(&foot);
if (WSASend(fd, wsabufs, 4, &ret, 0, NULL, NULL) == SOCKET_ERROR) {
SERR("WSASend");
}
#else /* WIN32 */
struct iovec msg_iov[4];
struct msghdr msg;
msg.msg_name = NULL;
msg.msg_namelen = 0;
msg.msg_iov = msg_iov;
msg.msg_iovlen = 4;
msg.msg_control = NULL;
msg.msg_controllen = 0;
msg.msg_flags = 0;
msg_iov[0].iov_base = GRN_TEXT_VALUE(body);
msg_iov[0].iov_len = GRN_TEXT_LEN(body);
msg_iov[1].iov_base = GRN_TEXT_VALUE(&head);
msg_iov[1].iov_len = GRN_TEXT_LEN(&head);
msg_iov[2].iov_base = GRN_TEXT_VALUE(outbuf);
msg_iov[2].iov_len = GRN_TEXT_LEN(outbuf);
msg_iov[3].iov_base = GRN_TEXT_VALUE(&foot);
msg_iov[3].iov_len = GRN_TEXT_LEN(&foot);
if ((ret = sendmsg(fd, &msg, MSG_NOSIGNAL)) == -1) {
SERR("sendmsg");
}
#endif /* WIN32 */
len = GRN_TEXT_LEN(body) + GRN_TEXT_LEN(&head) +
GRN_TEXT_LEN(outbuf) + GRN_TEXT_LEN(&foot);
if (ret != len) {
GRN_LOG(&grn_gctx, GRN_LOG_NOTICE,
"couldn't send all data (%" GRN_FMT_LLD "/%" GRN_FMT_LLD ")",
(long long int)ret, (long long int)len);
}
}
GRN_BULK_REWIND(body);
GRN_BULK_REWIND(outbuf);
GRN_OBJ_FIN(ctx, &foot);
GRN_OBJ_FIN(ctx, &head);
}
static void
do_htreq(grn_ctx *ctx, grn_msg *msg)
{
grn_sock fd = msg->u.fd;
grn_http_request_type t = grn_http_request_type_none;
grn_com_header *header = &msg->header;
switch (header->qtype) {
case 'G' : /* GET */
t = grn_http_request_type_get;
break;
case 'P' : /* POST */
t = grn_http_request_type_post;
break;
}
if (t) {
char *path = NULL;
char *pathe = GRN_BULK_HEAD((grn_obj *)msg);
char *e = GRN_BULK_CURR((grn_obj *)msg);
for (;; pathe++) {
if (e <= pathe + 6) {
/* invalid request */
goto exit;
}
if (*pathe == ' ') {
if (!path) {
path = pathe + 1;
} else {
if (!memcmp(pathe + 1, "HTTP/1", 6)) {
break;
}
}
}
}
grn_ctx_send(ctx, path, pathe - path, 0);
}
exit :
/* TODO: support "Connection: keep-alive" */
ctx->stat = GRN_CTX_QUIT;
/* TODO: support a command in multi requests. e.g.: load command */
grn_ctx_set_next_expr(ctx, NULL);
/* if (ctx->rc != GRN_OPERATION_WOULD_BLOCK) {...} */
grn_msg_close(ctx, (grn_obj *)msg);
/* if not keep alive connection */
grn_sock_close(fd);
grn_com_event_start_accept(ctx, msg->acceptor->ev);
}
enum {
MBRES_SUCCESS = 0x00,
MBRES_KEY_ENOENT = 0x01,
MBRES_KEY_EEXISTS = 0x02,
MBRES_E2BIG = 0x03,
MBRES_EINVAL = 0x04,
MBRES_NOT_STORED = 0x05,
MBRES_UNKNOWN_COMMAND = 0x81,
MBRES_ENOMEM = 0x82,
};
enum {
MBCMD_GET = 0x00,
MBCMD_SET = 0x01,
MBCMD_ADD = 0x02,
MBCMD_REPLACE = 0x03,
MBCMD_DELETE = 0x04,
MBCMD_INCREMENT = 0x05,
MBCMD_DECREMENT = 0x06,
MBCMD_QUIT = 0x07,
MBCMD_FLUSH = 0x08,
MBCMD_GETQ = 0x09,
MBCMD_NOOP = 0x0a,
MBCMD_VERSION = 0x0b,
MBCMD_GETK = 0x0c,
MBCMD_GETKQ = 0x0d,
MBCMD_APPEND = 0x0e,
MBCMD_PREPEND = 0x0f,
MBCMD_STAT = 0x10,
MBCMD_SETQ = 0x11,
MBCMD_ADDQ = 0x12,
MBCMD_REPLACEQ = 0x13,
MBCMD_DELETEQ = 0x14,
MBCMD_INCREMENTQ = 0x15,
MBCMD_DECREMENTQ = 0x16,
MBCMD_QUITQ = 0x17,
MBCMD_FLUSHQ = 0x18,
MBCMD_APPENDQ = 0x19,
MBCMD_PREPENDQ = 0x1a
};
static grn_critical_section cache_lock;
static grn_obj *cache_table = NULL;
static grn_obj *cache_value = NULL;
static grn_obj *cache_flags = NULL;
static grn_obj *cache_expire = NULL;
static grn_obj *cache_cas = NULL;
#define CTX_GET(name) (grn_ctx_get(ctx, (name), strlen(name)))
static grn_obj *
cache_init(grn_ctx *ctx)
{
if (cache_cas) { return cache_cas; }
CRITICAL_SECTION_ENTER(cache_lock);
if (!cache_cas) {
if ((cache_table = CTX_GET("Memcache"))) {
cache_value = CTX_GET("Memcache.value");
cache_flags = CTX_GET("Memcache.flags");
cache_expire = CTX_GET("Memcache.expire");
cache_cas = CTX_GET("Memcache.cas");
} else {
if (!cache_table) {
grn_obj *uint32_type = grn_ctx_at(ctx, GRN_DB_UINT32);
grn_obj *uint64_type = grn_ctx_at(ctx, GRN_DB_UINT64);
grn_obj *shorttext_type = grn_ctx_at(ctx, GRN_DB_SHORT_TEXT);
if ((cache_table = grn_table_create(ctx, "Memcache", 8, NULL,
GRN_OBJ_TABLE_PAT_KEY|GRN_OBJ_PERSISTENT,
shorttext_type, NULL))) {
cache_value = grn_column_create(ctx, cache_table, "value", 5, NULL,
GRN_OBJ_PERSISTENT, shorttext_type);
cache_flags = grn_column_create(ctx, cache_table, "flags", 5, NULL,
GRN_OBJ_PERSISTENT, uint32_type);
cache_expire = grn_column_create(ctx, cache_table, "expire", 6, NULL,
GRN_OBJ_PERSISTENT, uint32_type);
cache_cas = grn_column_create(ctx, cache_table, "cas", 3, NULL,
GRN_OBJ_PERSISTENT, uint64_type);
}
}
}
}
CRITICAL_SECTION_LEAVE(cache_lock);
return cache_cas;
}
#define RELATIVE_TIME_THRESH 1000000000
#define MBRES(ctx,re,status,key_len,extra_len,flags) do {\
grn_msg_set_property((ctx), (re), (status), (key_len), (extra_len));\
grn_msg_send((ctx), (re), (flags));\
} while (0)
#define GRN_MSG_MBRES(block) do {\
if (!quiet) {\
grn_obj *re = grn_msg_open_for_reply(ctx, (grn_obj *)msg, &edge->send_old);\
((grn_msg *)re)->header.qtype = header->qtype;\
block\
}\
} while (0)
static uint64_t
get_mbreq_cas_id()
{
static uint64_t cas_id = 0;
/* FIXME: use GRN_ATOMIC_ADD_EX_64, but it is not implemented */
return ++cas_id;
}
static void
do_mbreq(grn_ctx *ctx, grn_edge *edge)
{
int quiet = 0;
int flags = 0;
grn_msg *msg = edge->msg;
grn_com_header *header = &msg->header;
switch (header->qtype) {
case MBCMD_GETQ :
flags = GRN_CTX_MORE;
/* fallthru */
case MBCMD_GET :
{
grn_id rid;
uint16_t keylen = ntohs(header->keylen);
char *key = GRN_BULK_HEAD((grn_obj *)msg);
cache_init(ctx);
rid = grn_table_get(ctx, cache_table, key, keylen);
if (!rid) {
GRN_MSG_MBRES({
MBRES(ctx, re, MBRES_KEY_ENOENT, 0, 0, 0);
});
} else {
grn_timeval tv;
uint32_t expire;
{
grn_obj expire_buf;
GRN_UINT32_INIT(&expire_buf, 0);
grn_obj_get_value(ctx, cache_expire, rid, &expire_buf);
expire = GRN_UINT32_VALUE(&expire_buf);
grn_obj_close(ctx, &expire_buf);
}
grn_timeval_now(ctx, &tv);
if (expire && expire < tv.tv_sec) {
grn_table_delete_by_id(ctx, cache_table, rid);
GRN_MSG_MBRES({
MBRES(ctx, re, MBRES_KEY_ENOENT, 0, 0, 0);
});
} else {
grn_obj cas_buf;
GRN_UINT64_INIT(&cas_buf, 0);
grn_obj_get_value(ctx, cache_cas, rid, &cas_buf);
GRN_MSG_MBRES({
grn_obj_get_value(ctx, cache_flags, rid, re);
grn_obj_get_value(ctx, cache_value, rid, re);
((grn_msg *)re)->header.cas = GRN_UINT64_VALUE(&cas_buf);
MBRES(ctx, re, MBRES_SUCCESS, 0, 4, flags);
});
grn_obj_close(ctx, &cas_buf);
}
}
}
break;
case MBCMD_SETQ :
case MBCMD_ADDQ :
case MBCMD_REPLACEQ :
quiet = 1;
/* fallthru */
case MBCMD_SET :
case MBCMD_ADD :
case MBCMD_REPLACE :
{
grn_id rid;
uint32_t size = ntohl(header->size);
uint16_t keylen = ntohs(header->keylen);
uint8_t extralen = header->level;
char *body = GRN_BULK_HEAD((grn_obj *)msg);
uint32_t flags = *((uint32_t *)body);
uint32_t expire = ntohl(*((uint32_t *)(body + 4)));
uint32_t valuelen = size - keylen - extralen;
char *key = body + 8;
char *value = key + keylen;
int added = 0;
int f = (header->qtype == MBCMD_REPLACE ||
header->qtype == MBCMD_REPLACEQ) ? 0 : GRN_TABLE_ADD;
GRN_ASSERT(extralen == 8);
cache_init(ctx);
if (header->qtype == MBCMD_REPLACE || header->qtype == MBCMD_REPLACEQ) {
rid = grn_table_get(ctx, cache_table, key, keylen);
} else {
rid = grn_table_add(ctx, cache_table, key, keylen, &added);
}
if (!rid) {
GRN_MSG_MBRES({
MBRES(ctx, re, (f & GRN_TABLE_ADD) ? MBRES_ENOMEM : MBRES_NOT_STORED, 0, 0, 0);
});
} else {
if (added) {
if (header->cas) {
GRN_MSG_MBRES({
MBRES(ctx, re, MBRES_EINVAL, 0, 0, 0);
});
} else {
grn_obj text_buf, uint32_buf;
GRN_TEXT_INIT(&text_buf, GRN_OBJ_DO_SHALLOW_COPY);
GRN_TEXT_SET_REF(&text_buf, value, valuelen);
grn_obj_set_value(ctx, cache_value, rid, &text_buf, GRN_OBJ_SET);
GRN_UINT32_INIT(&uint32_buf, 0);
GRN_UINT32_SET(ctx, &uint32_buf, flags);
grn_obj_set_value(ctx, cache_flags, rid, &uint32_buf, GRN_OBJ_SET);
if (expire && expire < RELATIVE_TIME_THRESH) {
grn_timeval tv;
grn_timeval_now(ctx, &tv);
expire += tv.tv_sec;
}
GRN_UINT32_SET(ctx, &uint32_buf, expire);
grn_obj_set_value(ctx, cache_expire, rid, &uint32_buf, GRN_OBJ_SET);
grn_obj_close(ctx, &uint32_buf);
{
grn_obj cas_buf;
uint64_t cas_id = get_mbreq_cas_id();
GRN_UINT64_INIT(&cas_buf, 0);
GRN_UINT64_SET(ctx, &cas_buf, cas_id);
grn_obj_set_value(ctx, cache_cas, rid, &cas_buf, GRN_OBJ_SET);