197 lines
4.8 KiB
C
197 lines
4.8 KiB
C
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/*
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* Copyright (C) Igor Sysoev
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*/
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#include <ngx_config.h>
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#include <ngx_core.h>
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#include <ngx_mysql.h>
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#include <ngx_http.h>
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typedef struct {
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ngx_peers_t *peers;
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} ngx_http_mysql_test_conf_t;
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static void ngx_http_mysql_auth(ngx_mysql_t *m);
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static void ngx_http_mysql_done(ngx_mysql_t *m);
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static void *ngx_http_mysql_test_create_loc_conf(ngx_conf_t *cf);
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static char *ngx_http_mysql_test(ngx_conf_t *cf, ngx_command_t *cmd,
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void *conf);
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static ngx_command_t ngx_http_mysql_test_commands[] = {
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{ ngx_string("mysql_test"),
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NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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ngx_http_mysql_test,
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NGX_HTTP_LOC_CONF_OFFSET,
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0,
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NULL },
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ngx_null_command
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};
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static ngx_http_module_t ngx_http_mysql_test_module_ctx = {
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NULL, /* preconfiguration */
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NULL, /* postconfiguration */
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NULL, /* create main configuration */
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NULL, /* init main configuration */
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NULL, /* create server configuration */
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NULL, /* merge server configuration */
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ngx_http_mysql_test_create_loc_conf, /* create location configuration */
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NULL /* merge location configuration */
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};
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ngx_module_t ngx_http_mysql_test_module = {
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NGX_MODULE_V1,
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&ngx_http_mysql_test_module_ctx, /* module context */
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ngx_http_mysql_test_commands, /* module directives */
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NGX_HTTP_MODULE, /* module type */
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NULL, /* init master */
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NULL, /* init module */
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NULL, /* init process */
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NULL, /* init thread */
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NULL, /* exit thread */
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NULL, /* exit process */
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NULL, /* exit master */
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NGX_MODULE_V1_PADDING
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};
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static ngx_str_t ngx_mysql_login = ngx_string("root");
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static ngx_str_t ngx_mysql_passwd = ngx_string("tp");
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static ngx_str_t ngx_mysql_database = ngx_string("mysql");
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static ngx_str_t ngx_mysql_command_query =
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ngx_string("select * from user");
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static ngx_int_t
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ngx_http_mysql_test_handler(ngx_http_request_t *r)
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{
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ngx_int_t rc;
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ngx_mysql_t *m;
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ngx_http_mysql_test_conf_t *mtcf;
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mtcf = ngx_http_get_module_loc_conf(r, ngx_http_mysql_test_module);
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m = ngx_pcalloc(r->pool, sizeof(ngx_mysql_t));
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if (m == NULL) {
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return NGX_HTTP_INTERNAL_SERVER_ERROR;
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}
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m->pool = r->pool;
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m->handler = ngx_http_mysql_auth;
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m->data = r;
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m->login = &ngx_mysql_login;
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m->passwd = &ngx_mysql_passwd;
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m->database = &ngx_mysql_database;
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m->peer.log = r->connection->log;
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m->peer.log_error = NGX_ERROR_ERR;
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m->peer.peers = mtcf->peers;
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m->peer.tries = mtcf->peers->number;
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rc = ngx_mysql_connect(m);
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if (rc == NGX_OK || rc == NGX_AGAIN) {
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return NGX_DONE;
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}
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return NGX_HTTP_INTERNAL_SERVER_ERROR;
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}
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static void
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ngx_http_mysql_auth(ngx_mysql_t *m)
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{
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ngx_http_request_t *r;
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r = m->data;
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if (m->state != NGX_OK) {
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ngx_http_finalize_request(r, NGX_HTTP_NO_CONTENT);
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return;
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}
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m->query.len = NGX_MYSQL_CMDPKT_LEN + ngx_mysql_command_query.len;
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m->query.data = ngx_palloc(r->pool, m->query.len);
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if (m->query.data == NULL) {
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ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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return;
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}
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ngx_memcpy(m->query.data + NGX_MYSQL_CMDPKT_LEN,
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ngx_mysql_command_query.data, ngx_mysql_command_query.len);
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m->handler = ngx_http_mysql_done;
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ngx_mysql_query(m);
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}
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static void
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ngx_http_mysql_done(ngx_mysql_t *m)
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{
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ngx_http_request_t *r;
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r = m->data;
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ngx_http_finalize_request(r, NGX_HTTP_NO_CONTENT);
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}
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static void *
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ngx_http_mysql_test_create_loc_conf(ngx_conf_t *cf)
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{
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ngx_http_mysql_test_conf_t *conf;
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conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_mysql_test_conf_t));
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if (conf == NULL) {
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return NGX_CONF_ERROR;
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}
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return conf;
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}
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static char *
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ngx_http_mysql_test(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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{
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ngx_http_mysql_test_conf_t *mtcf = conf;
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ngx_str_t *value;
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ngx_url_t u;
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ngx_http_core_loc_conf_t *clcf;
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clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
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clcf->handler = ngx_http_mysql_test_handler;
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value = cf->args->elts;
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ngx_memzero(&u, sizeof(ngx_url_t));
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u.url = value[1];
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u.default_portn = 3306;
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if (ngx_parse_url(cf, &u) != NGX_OK) {
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if (u.err) {
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ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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"%s in upstream \"%V\"", u.err, &u.url);
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}
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return NGX_CONF_ERROR;
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}
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mtcf->peers = u.peers;
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return NGX_CONF_OK;
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}
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