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2283.4.1
by Stewart Smith
very basic HTTP server |
1 |
/* - mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
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* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
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*
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* Copyright (C) 2011 Stewart Smith
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <config.h> |
|
|
2363.1.1
by Brian Aker
Fix memory leak in temporal and json server. |
23 |
|
24 |
#include <unistd.h> |
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25 |
#include <fcntl.h> |
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2283.4.1
by Stewart Smith
very basic HTTP server |
27 |
#include <drizzled/module/module.h> |
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#include <drizzled/module/context.h> |
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#include <drizzled/plugin/plugin.h> |
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#include <drizzled/plugin.h> |
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2363.1.1
by Brian Aker
Fix memory leak in temporal and json server. |
31 |
#include <drizzled/plugin/daemon.h> |
|
2283.4.1
by Stewart Smith
very basic HTTP server |
32 |
#include <drizzled/sys_var.h> |
33 |
#include <drizzled/gettext.h> |
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#include <drizzled/error.h> |
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#include <drizzled/session.h> |
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#include <drizzled/internal/my_sys.h> |
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#include <drizzled/internal/m_string.h> |
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#include <algorithm> |
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#include <iostream> |
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#include <boost/program_options.hpp> |
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#include <drizzled/module/option_map.h> |
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#include <drizzled/constrained_value.h> |
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#include <evhttp.h> |
|
|
2283.4.6
by Stewart Smith
add a simple SQL interface to json_server plugin. /0.1/sql takes a HTTP POST SQL command and returns the result set. |
44 |
#include <event.h> |
45 |
#include <drizzled/execute.h> |
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#include <drizzled/sql/result_set.h> |
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#include <drizzled/plugin/listen.h> |
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#include <drizzled/plugin/client.h> |
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#include <drizzled/catalog/local.h> |
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2283.4.1
by Stewart Smith
very basic HTTP server |
51 |
|
|
2363.1.1
by Brian Aker
Fix memory leak in temporal and json server. |
52 |
#include <drizzled/pthread_globals.h> |
53 |
#include <boost/bind.hpp> |
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54 |
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55 |
||
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2283.4.3
by Stewart Smith
add JSON library to json_server, fix up for building in our tree, and add simple /0.1/version JSON response as well as latest_api_version snippet to / |
56 |
#include <drizzled/version.h> |
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#include <plugin/json_server/json/json.h> |
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||
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2283.4.1
by Stewart Smith
very basic HTTP server |
59 |
namespace po= boost::program_options; |
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using namespace drizzled; |
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using namespace std; |
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namespace drizzle_plugin |
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{
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namespace json_server |
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{
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static port_constraint port; |
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static in_port_t getPort(void) |
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{
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return port.get(); |
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}
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extern "C" void process_request(struct evhttp_request *req, void* ); |
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extern "C" void process_root_request(struct evhttp_request *req, void* ); |
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2283.4.3
by Stewart Smith
add JSON library to json_server, fix up for building in our tree, and add simple /0.1/version JSON response as well as latest_api_version snippet to / |
77 |
extern "C" void process_api01_version_req(struct evhttp_request *req, void* ); |
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2283.4.6
by Stewart Smith
add a simple SQL interface to json_server plugin. /0.1/sql takes a HTTP POST SQL command and returns the result set. |
78 |
extern "C" void process_api01_sql_req(struct evhttp_request *req, void* ); |
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2283.4.1
by Stewart Smith
very basic HTTP server |
79 |
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extern "C" void process_request(struct evhttp_request *req, void* ) |
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{
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struct evbuffer *buf = evbuffer_new(); |
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if (buf == NULL) return; |
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evbuffer_add_printf(buf, "Requested: %s\n", evhttp_request_uri(req)); |
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evhttp_send_reply(req, HTTP_OK, "OK", buf); |
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}
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extern "C" void process_root_request(struct evhttp_request *req, void* ) |
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{
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struct evbuffer *buf = evbuffer_new(); |
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if (buf == NULL) return; |
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2283.4.3
by Stewart Smith
add JSON library to json_server, fix up for building in our tree, and add simple /0.1/version JSON response as well as latest_api_version snippet to / |
92 |
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2283.4.7
by Stewart Smith
it's way more fun if the json_server serves out a AJAX web app that lets you execute SQL queries that get displaed as a HTML table. |
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std::string output; |
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2283.4.3
by Stewart Smith
add JSON library to json_server, fix up for building in our tree, and add simple /0.1/version JSON response as well as latest_api_version snippet to / |
94 |
|
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2283.4.7
by Stewart Smith
it's way more fun if the json_server serves out a AJAX web app that lets you execute SQL queries that get displaed as a HTML table. |
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output.append("<html><head><title>JSON DATABASE interface demo</title></head>" |
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"<body>"
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"<script lang=\"javascript\">" |
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"function to_table(obj) {"
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" var str = '<table>';"
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"for (var r=0; r< obj.length; r++) {"
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" str+='<tr>';"
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" for (var c=0; c < obj[r].length; c++) {"
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" str+= '<td>' + obj[r][c] + '</td>';"
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" }"
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" str+='</tr>';"
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"}"
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"str+='</table>';"
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"return str;"
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"}"
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"function run_query()\n" |
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"{"
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"var url = document.getElementById(\"baseurl\").innerHTML;\n" |
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2283.4.8
by Stewart Smith
fix a bug in json_server so that we execute the query in the text box instead of the underlaying innerHTML |
113 |
"var query= document.getElementById(\"query\").value;\n" |
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2283.4.7
by Stewart Smith
it's way more fun if the json_server serves out a AJAX web app that lets you execute SQL queries that get displaed as a HTML table. |
114 |
"var xmlHttp = new XMLHttpRequest();\n" |
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"xmlHttp.onreadystatechange = function () {\n" |
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"if (xmlHttp.readyState == 4 && xmlHttp.status == 200) {\n" |
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"var info = eval ( \"(\" + xmlHttp.responseText + \")\" );\n" |
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"document.getElementById( \"resultset\").innerHTML= to_table(info.result_set);\n" |
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"}\n" |
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"};\n" |
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"xmlHttp.open(\"POST\", url + \"/0.1/sql\", true);" |
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"xmlHttp.send(query);"
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"}"
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"\n\n" |
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"function update_version()\n" |
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"{drizzle_version(document.getElementById(\"baseurl\").innerHTML);}\n\n" |
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"function drizzle_version($url)"
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"{"
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"var xmlHttp = new XMLHttpRequest();\n" |
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"xmlHttp.onreadystatechange = function () {\n" |
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"if (xmlHttp.readyState == 4 && xmlHttp.status == 200) {\n" |
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"var info = eval ( \"(\" + xmlHttp.responseText + \")\" );\n" |
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"document.getElementById( \"drizzleversion\").innerHTML= info.version;\n" |
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"}\n" |
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"};\n" |
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"xmlHttp.open(\"GET\", $url + \"/0.1/version\", true);" |
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"xmlHttp.send(null);"
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"}"
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"</script>"
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"<p>Drizzle Server at: <a id=\"baseurl\">http://localhost:8765</a></p>" |
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"<p>Drizzle server version: <a id=\"drizzleversion\"></a></p>" |
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"<p><textarea rows=\"3\" cols=\"40\" id=\"query\">" |
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"SELECT * from DATA_DICTIONARY.GLOBAL_STATUS;"
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"</textarea>"
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"<button type=\"button\" onclick=\"run_query();\">Execute Query</button>" |
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"<div id=\"resultset\"/>" |
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"<script lang=\"javascript\">update_version(); run_query();</script>" |
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"</body></html>"); |
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2283.4.3
by Stewart Smith
add JSON library to json_server, fix up for building in our tree, and add simple /0.1/version JSON response as well as latest_api_version snippet to / |
149 |
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evbuffer_add(buf, output.c_str(), output.length()); |
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evhttp_send_reply(req, HTTP_OK, "OK", buf); |
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}
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extern "C" void process_api01_version_req(struct evhttp_request *req, void* ) |
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{
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struct evbuffer *buf = evbuffer_new(); |
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if (buf == NULL) return; |
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Json::Value root; |
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root["version"]= ::drizzled::version(); |
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Json::StyledWriter writer; |
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std::string output= writer.write(root); |
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evbuffer_add(buf, output.c_str(), output.length()); |
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2283.4.1
by Stewart Smith
very basic HTTP server |
166 |
evhttp_send_reply(req, HTTP_OK, "OK", buf); |
167 |
}
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||
|
2283.4.6
by Stewart Smith
add a simple SQL interface to json_server plugin. /0.1/sql takes a HTTP POST SQL command and returns the result set. |
169 |
extern "C" void process_api01_sql_req(struct evhttp_request *req, void* ) |
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{
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struct evbuffer *buf = evbuffer_new(); |
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if (buf == NULL) return; |
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std::string input; |
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char buffer[1024]; |
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int l=0; |
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do { |
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l= evbuffer_remove(req->input_buffer, buffer, 1024); |
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input.append(buffer, l); |
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}while(l); |
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drizzled::Session::shared_ptr _session= drizzled::Session::make_shared(drizzled::plugin::Listen::getNullClient(), |
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drizzled::catalog::local()); |
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drizzled::identifier::user::mptr user_id= identifier::User::make_shared(); |
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user_id->setUser(""); |
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_session->setUser(user_id); |
|
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2385.1.7
by Olaf van der Spek
Rename set_db to set_schema |
187 |
_session->set_schema("test"); |
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2283.4.6
by Stewart Smith
add a simple SQL interface to json_server plugin. /0.1/sql takes a HTTP POST SQL command and returns the result set. |
188 |
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drizzled::Execute execute(*(_session.get()), true); |
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drizzled::sql::ResultSet result_set(1); |
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/* Execute wraps the SQL to run within a transaction */
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execute.run(input, result_set); |
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drizzled::sql::Exception exception= result_set.getException(); |
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drizzled::error_t err= exception.getErrorCode(); |
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Json::Value root; |
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root["sqlstate"]= exception.getSQLState(); |
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if ((err != drizzled::EE_OK) && (err != drizzled::ER_EMPTY_QUERY)) |
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{
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root["error_message"]= exception.getErrorMessage(); |
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root["error_code"]= exception.getErrorCode(); |
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}
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while (result_set.next()) |
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{
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Json::Value json_row; |
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for (size_t x= 0; x < result_set.getMetaData().getColumnCount(); x++) |
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{
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if (not result_set.isNull(x)) |
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{
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json_row[x]= result_set.getString(x); |
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}
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}
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root["result_set"].append(json_row); |
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}
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root["query"]= input; |
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Json::StyledWriter writer; |
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std::string output= writer.write(root); |
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evbuffer_add(buf, output.c_str(), output.length()); |
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evhttp_send_reply(req, HTTP_OK, "OK", buf); |
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}
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||
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2363.1.1
by Brian Aker
Fix memory leak in temporal and json server. |
230 |
static void shutdown_event(int fd, short, void *arg) |
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{
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struct event_base *base= (struct event_base *)arg; |
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event_base_loopbreak(base); |
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close(fd); |
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}
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static void run(struct event_base *base) |
|
|
2283.4.1
by Stewart Smith
very basic HTTP server |
239 |
{
|
|
2283.4.6
by Stewart Smith
add a simple SQL interface to json_server plugin. /0.1/sql takes a HTTP POST SQL command and returns the result set. |
240 |
internal::my_thread_init(); |
241 |
||
|
2283.4.1
by Stewart Smith
very basic HTTP server |
242 |
event_base_dispatch(base); |
243 |
}
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244 |
||
|
2363.1.1
by Brian Aker
Fix memory leak in temporal and json server. |
245 |
|
246 |
class JsonServer : public drizzled::plugin::Daemon |
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{
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private: |
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drizzled::thread_ptr json_thread; |
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in_port_t _port; |
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struct evhttp *httpd; |
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struct event_base *base; |
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int wakeup_fd[2]; |
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struct event wakeup_event; |
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public: |
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JsonServer(in_port_t port_arg) : |
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drizzled::plugin::Daemon("JSON Server"), |
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_port(port_arg), |
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httpd(NULL), |
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base(NULL) |
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{ } |
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263 |
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bool init() |
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{
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if (pipe(wakeup_fd) < 0) |
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{
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sql_perror("pipe"); |
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return false; |
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}
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int returned_flags; |
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if ((returned_flags= fcntl(wakeup_fd[0], F_GETFL, 0)) < 0) |
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{
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sql_perror("fcntl:F_GETFL"); |
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return false; |
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}
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if (fcntl(wakeup_fd[0], F_SETFL, returned_flags | O_NONBLOCK) < 0) |
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{
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sql_perror("F_SETFL"); |
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return false; |
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}
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285 |
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286 |
if ((base= event_init()) == NULL) |
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{
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sql_perror("event_init()"); |
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return false; |
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}
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291 |
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if ((httpd= evhttp_new(base)) == NULL) |
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{
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sql_perror("evhttp_new()"); |
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295 |
return false; |
|
296 |
}
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297 |
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298 |
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299 |
if ((evhttp_bind_socket(httpd, "0.0.0.0", getPort())) == -1) |
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300 |
{
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301 |
sql_perror("evhttp_bind_socket()"); |
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302 |
return false; |
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}
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304 |
||
305 |
evhttp_set_cb(httpd, "/", process_root_request, NULL); |
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evhttp_set_cb(httpd, "/0.1/version", process_api01_version_req, NULL); |
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evhttp_set_cb(httpd, "/0.1/sql", process_api01_sql_req, NULL); |
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evhttp_set_gencb(httpd, process_request, NULL); |
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309 |
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310 |
event_set(&wakeup_event, wakeup_fd[0], EV_READ | EV_PERSIST, shutdown_event, base); |
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311 |
event_base_set(base, &wakeup_event); |
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312 |
if (event_add(&wakeup_event, NULL) < 0) |
|
313 |
{
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314 |
sql_perror("event_add"); |
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315 |
return false; |
|
316 |
}
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317 |
||
318 |
json_thread.reset(new boost::thread((boost::bind(&run, base)))); |
|
319 |
||
320 |
if (not json_thread) |
|
321 |
return false; |
|
322 |
||
323 |
return true; |
|
324 |
}
|
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325 |
||
326 |
~JsonServer() |
|
327 |
{
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328 |
// If we can't write(), we will just muddle our way through the shutdown
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329 |
char buffer[1]; |
|
330 |
buffer[0]= 4; |
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if ((write(wakeup_fd[1], &buffer, 1)) == 1) |
|
332 |
{
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|
333 |
json_thread->join(); |
|
334 |
evhttp_free(httpd); |
|
335 |
event_base_free(base); |
|
336 |
}
|
|
337 |
}
|
|
338 |
};
|
|
339 |
||
|
2283.4.1
by Stewart Smith
very basic HTTP server |
340 |
static int json_server_init(drizzled::module::Context &context) |
341 |
{
|
|
342 |
context.registerVariable(new sys_var_constrained_value_readonly<in_port_t>("port", port)); |
|
343 |
||
|
2363.1.1
by Brian Aker
Fix memory leak in temporal and json server. |
344 |
JsonServer *server; |
345 |
context.add(server= new JsonServer(port)); |
|
346 |
||
347 |
if (server and not server->init()) |
|
348 |
{
|
|
|
2283.4.1
by Stewart Smith
very basic HTTP server |
349 |
return -2; |
|
2363.1.1
by Brian Aker
Fix memory leak in temporal and json server. |
350 |
}
|
351 |
||
352 |
return bool(server) ? 0 : 1; |
|
|
2283.4.1
by Stewart Smith
very basic HTTP server |
353 |
}
|
354 |
||
355 |
static void init_options(drizzled::module::option_context &context) |
|
356 |
{
|
|
357 |
context("port", |
|
|
2363.1.1
by Brian Aker
Fix memory leak in temporal and json server. |
358 |
po::value<port_constraint>(&port)->default_value(8086), |
359 |
_("Port number to use for connection or 0 for default (port 8086) ")); |
|
|
2283.4.1
by Stewart Smith
very basic HTTP server |
360 |
}
|
361 |
||
362 |
} /* namespace json_server */ |
|
363 |
} /* namespace drizzle_plugin */ |
|
364 |
||
365 |
DRIZZLE_DECLARE_PLUGIN
|
|
366 |
{
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|
367 |
DRIZZLE_VERSION_ID, |
|
368 |
"json-server", |
|
369 |
"0.1", |
|
370 |
"Stewart Smith", |
|
371 |
"JSON HTTP interface", |
|
372 |
PLUGIN_LICENSE_GPL, |
|
373 |
drizzle_plugin::json_server::json_server_init, /* Plugin Init */ |
|
374 |
NULL, /* depends */ |
|
375 |
drizzle_plugin::json_server::init_options /* config options */ |
|
376 |
}
|
|
377 |
DRIZZLE_DECLARE_PLUGIN_END; |