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Revised Redis and CouchDB Node scripts due to updated Node library APIs #2

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Revised Redis and CouchDB Node scripts due to updated Node library APIs #2

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d0357b3
Fixed issue with csv node module deprecating fromPath in favour of fr…
May 5, 2013
f34fb07
changed csv parser event for record rather than data to support group…
May 6, 2013
826f274
changed requests to use http.request rather than use deprecated httpC…
May 6, 2013
9e51d45
removed debugging console.log
May 6, 2013
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24 changes: 16 additions & 8 deletions chap8-redis/populate_couch.js
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Original file line number Diff line number Diff line change
Expand Up @@ -19,8 +19,7 @@ var
http = require('http'),
redis = require('redis'),

// database clients
couchClient = http.createClient(5984, 'localhost'),
// database client
redisClient = redis.createClient(6379);

/**
Expand Down Expand Up @@ -62,11 +61,14 @@ function trackLineCount( increment ) {
*/
function postDoc( url, docsString, count ) {

var request = couchClient.request(
'POST',
url,
{ 'Content-Type' : 'application/json' });
request.end( docsString );
var request = http.request(
{ hostname : 'localhost',
port: 5984,
path: url,
method: 'POST',
headers: {
'Content-Type': 'application/json'}
});

request.on('response', function(response) {
if(response.statusCode == 201)
Expand All @@ -75,6 +77,8 @@ function postDoc( url, docsString, count ) {
on('error', function(e) {
console.log('postDoc Got error: ' + e.message);
});
request.write(docsString)
request.end();
};

/*
Expand All @@ -95,7 +99,11 @@ function postDoc( url, docsString, count ) {
function populateBands() {

// First, create the couch database
couchClient.request('PUT', couchDBpath).end();
http.request(
{ hostname : 'localhost',
port: 5984,
path: couchDBpath,
method: 'PUT'}).end();

redisClient.keys('band:*', function(error, bandKeys) {
totalBands = bandKeys.length;
Expand Down
13 changes: 7 additions & 6 deletions chap8-redis/pre_populate.js
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Original file line number Diff line number Diff line change
Expand Up @@ -46,16 +46,17 @@ function trackLineCount() {
*/
function populateRedis() {
csv().
fromPath( tsvFileName, { delimiter: '\t', quote: '' }).
on('data', function(data, index) {
from.path( tsvFileName, { delimiter: '\t', quote: '' }).
on('record', function(record, index) {
var
artist = data[2],
band = data[3],
roles = buildRoles(data[4]);
artist = record[2],
band = record[3],
roles = buildRoles(record[4]);
if( band === '' || artist === '' ) {
trackLineCount();
return true;
}
}
//console.log('#'+index+' '+JSON.stringify(record));
redis_client.sadd('band:' + band, artist);
roles.forEach(function(role) {
redis_client.sadd('artist:' + band + ':' + artist, role);
Expand Down