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var clutch = require('clutch');
var http = require('http');
var pg = require('pg');
var xmlGenerator = require('./xmlGenerator.js');
var opts = require('opts');
var config = require('./config.json');
var log4js = require('log4js')();
var log = log4js.getLogger('global');
var options = [
{ short : 'c'
, long : 'config'
, description : 'Select configuration file'
, value : true
, callback : function(value) { loadCustomConfig(value); }
}
];
function loadCustomConfig(path) {
log.info("reading custom config: " + path);
if( path[0] != '/'){
path = __dirname + '/' + path;
}
log.info(path);
config = require(path);
}
function createWayBboxQuery(key, value, left, bottom, right, top) {
return {
text: 'SELECT id,tstamp,version,changeset_id,nodes,user_id,hstore_to_array(tags) as tags \
FROM ways \
WHERE ( \
tags @> hstore($1, $2) AND \
linestring && st_setsrid(st_makebox2d( \
st_setsrid(st_makepoint($3, $4), 4326), \
st_setsrid(st_makepoint($5, $6), 4326) \
), 4326) \
)',
values: [key, value, left, bottom, right, top],
name: 'way bbox query'
};
}
function createNodeBboxQuery(key, value, left, bottom, right, top) {
return {
text: 'SELECT id,user_id,tstamp,version,changeset_id,hstore_to_array(tags) as tags, X(geom) as lat, Y(geom) as lon \
FROM nodes \
WHERE ( \
tags @> hstore($1, $2) AND \
geom && st_setsrid(st_makebox2d( \
st_setsrid(st_makepoint($3, $4), 4326), \
st_setsrid(st_makepoint($5, $6), 4326) \
), 4326) \
)',
values: [key, value, left, bottom, right, top],
name: 'node bbox query'
};
}
function createNodesForWayQuery(nodes) {
return {
text: 'SELECT id,tstamp,version,changeset_id,hstore_to_array(tags) as tags, X(geom) as lat, Y(geom) as lon \
FROM nodes \
WHERE (id = ANY($1))',
values: [nodes],
name: 'nodes for way'
};
}
function nodeWorldHandler(req, res, key, value) {
res.writeHead(200, {'Content-Type': 'text/plain'});
res.end(' key:' +key +' value:'+value+'\n');
}
function nodeBboxHandler(req, res, key, value, left, bottom, right, top) {
db_connect(res, function(client) {
var success = false;
var query = client.query(createNodeBboxQuery(key, value, left, bottom, right, top));
query.on('error', function(err) {
log.error(err);
res.writeHead(404,{});
res.end('\n');
});
query.on('end', function() {
//console.log("end event\n");
if(success) {
res.write("</xml>");
res.end();
}
else {
//empty response
res.writeHead(404,{});
res.end();
//perhaps write 404? is error also raised?
}
});
query.on('row', function(row) {
if(!success) {
success = true;
res.writeHead(200, {'Content-Type': 'text/plain'});
res.write("<xml>");
}
res.write(xmlGenerator.createNode(row));
});
});
}
function wayWorldHandler(req, res, key, value) {
res.writeHead(200, {'Content-Type': 'text/plain'});
}
function connectionError(err, res) {
log.error(err);
log.fatal("connectionError not implemented");
}
function db_connect(res, callback) {
pg.connect(config['connectionString'], function(err, client) {
if(err) {
log.error('message');
console.log(config['connectionString']);
console.log(err);
res.writeHead(404,{});
res.end();
} else {
log.info("db connection was successfull");
callback(client);
}
});
}
function wayBboxHandler(req, res, key, value, left, bottom, right, top) {
db_connect(res, function(client) {
var count = 0;
var success = false;
//console.log(createWayBboxQuery(key, value, left, bottom, right, top));
var query = client.query(createWayBboxQuery(key, value, left, bottom, right, top));
query.on('error', function(err) {
log.error(err);
res.writeHead(404,{});
res.end();
});
query.on('end', function() {
if(success) {
if(count == 0) {
res.write("</xml>");
res.end();
}
//res.write("</xml>");
//res.end(); //problem!!!
}
else {
res.writeHead(404,{});
res.end();
//perhaps write 404?
}
});
query.on('row', function(row) {
if(!success) {
success = true;
res.writeHead(200, {'Content-Type': 'text/plain'});
res.write("<xml>");
}
//console.log(row);
if(row.nodes != '{}') {
count++;
var subquery = client.query(createNodesForWayQuery(row.nodes));
subquery.on('error',function(err) {});
subquery.on('end', function() {
count--;
if(count==0)
res.write("</xml>");
res.end();
});
subquery.on('row', function(row) {
res.write(xmlGenerator.createNode(row));
});
//console.log(createNodesForWayQuery(row.nodes));
}
res.write(xmlGenerator.createWay(row));
});
});
}
function relationWorldHandler(req, res, key, value) {
res.writeHead(200, {'Content-Type': 'text/plain'});
res.end(' key:' +key +' value:'+value+'!\n');
}
function relationBboxHandler(req, res, key, value, left, bottom, right, top) {
}
myRoutes = clutch.route404([
//['GET /api/(\\w+)(\\[bbox=(\\d,\\d,\\d,\\d)\\])*\\[(\\w+)=(\\w+)\\]$', helloSomeone],
['GET /api/node\\[(\\w+)=(\\w+)\\]$',nodeWorldHandler],
//['GET /api/node\\[(\\w+)=(\\w+)\\]\\[bbox=(\\d+(\\.\\d+)?),(\\d+),(\\d+),(\\d+)\\]$',nodeBboxHandler],
['GET /api/node\\[(\\w+)=(\\w+)\\]\\[bbox=(\\d+(?:\\.\\d+)?),(\\d+(?:\\.\\d+)?),(\\d+(?:\\.\\d+)?),(\\d+(?:\\.\\d+)?)\\]$',nodeBboxHandler],
//['GET /api/node\\[(\\w+)=(\\w+)\\]\\[bbox=(\\d+\\.\\d+),(\\d+),(\\d+),(\\d+)\\]$',nodeBboxHandler],
['GET /api/way\\[(\\w+)=(\\w+)\\]$',wayWorldHandler],
['GET /api/way\\[(\\w+)=(\\w+)\\]\\[bbox=(\\d+(?:\\.\\d+)?),(\\d+(?:\\.\\d+)?),(\\d+(?:\\.\\d+)?),(\\d+(?:\\.\\d+)?)\\]$',wayBboxHandler],
['GET /api/relation\\[(\\w+)=(\\w+)\\]$',relationWorldHandler],
//['GET /api/relation\\[(\\w+)=(\\w+)\\](\\[bbox=(\\d),(\\d),(\\d),(\\d)\\])$',relationBboxHandler],
]);
log.setLevel('ALL');
log.info("server starting...");
opts.parse(options, true);
http.createServer(myRoutes).listen(config.port, config.host);
log.info("Started server at " + config.host + ":" + config.port );
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