Migrate when -> bluebird

channel_api.js

@@ -1,14 +1,14 @@
 var raw_connect = require('./lib/connect').connect;
 var ChannelModel = require('./lib/channel_model').ChannelModel;
-var defer = require('when').defer;
+var Promise = require('bluebird');
 
 function connect(url, connOptions) {
-  var opened = defer();
-  raw_connect(url, connOptions, function(err, conn) {
-    if (err === null) opened.resolve(new ChannelModel(conn));
-    else opened.reject(err);
+  return Promise.fromCallback(function(cb) {
+    return raw_connect(url, connOptions, cb);
+  })
+  .then(function(conn) {
+    return new ChannelModel(conn);
   });
-  return opened.promise;
 };
 
 module.exports.connect = connect;

examples/tutorials/README.md

@@ -9,7 +9,7 @@ of the tutorial programs to the callback-oriented API.
 To run the tutorial code, you need amqplib installed. Assuming you are
 in a clone of the amqplib repository, from the tutorials directory:
 
-    npm install ../..
+    npm install
 
 or to use the latest released version,
 

examples/tutorials/emit_log.js

@@ -1,10 +1,9 @@
 #!/usr/bin/env node
 
 var amqp = require('amqplib');
-var when = require('when');
 
 amqp.connect('amqp://localhost').then(function(conn) {
-  return when(conn.createChannel().then(function(ch) {
+  return conn.createChannel().then(function(ch) {
     var ex = 'logs';
     var ok = ch.assertExchange(ex, 'fanout', {durable: false})
 
@@ -16,5 +15,5 @@ amqp.connect('amqp://localhost').then(function(conn) {
       console.log(" [x] Sent '%s'", message);
       return ch.close();
     });
-  })).ensure(function() { conn.close(); });
-}).then(null, console.warn);
+  }).finally(function() { conn.close(); });
+}).catch(console.warn);

examples/tutorials/emit_log_direct.js

@@ -1,14 +1,13 @@
 #!/usr/bin/env node
 
 var amqp = require('amqplib');
-var when = require('when');
 
 var args = process.argv.slice(2);
 var severity = (args.length > 0) ? args[0] : 'info';
 var message = args.slice(1).join(' ') || 'Hello World!';
 
 amqp.connect('amqp://localhost').then(function(conn) {
-  return when(conn.createChannel().then(function(ch) {
+  return conn.createChannel().then(function(ch) {
     var ex = 'direct_logs';
     var ok = ch.assertExchange(ex, 'direct', {durable: false});
 
@@ -17,5 +16,5 @@ amqp.connect('amqp://localhost').then(function(conn) {
       console.log(" [x] Sent %s:'%s'", severity, message);
       return ch.close();
     });
-  })).ensure(function() { conn.close(); });
-}).then(null, console.warn);
+  }).finally(function() { conn.close(); });
+}).catch(console.warn);

examples/tutorials/emit_log_topic.js

@@ -1,20 +1,19 @@
 #!/usr/bin/env node
 
 var amqp = require('amqplib');
-var when = require('when');
 
 var args = process.argv.slice(2);
 var key = (args.length > 0) ? args[0] : 'info';
 var message = args.slice(1).join(' ') || 'Hello World!';
 
 amqp.connect('amqp://localhost').then(function(conn) {
-  return when(conn.createChannel().then(function(ch) {
+  return conn.createChannel().then(function(ch) {
     var ex = 'topic_logs';
     var ok = ch.assertExchange(ex, 'topic', {durable: false});
     return ok.then(function() {
       ch.publish(ex, key, new Buffer(message));
       console.log(" [x] Sent %s:'%s'", key, message);
       return ch.close();
     });
-  })).ensure(function() { conn.close(); })
-}).then(null, console.log);
+  }).finally(function() { conn.close(); })
+}).catch(console.log);

examples/tutorials/new_task.js

@@ -2,18 +2,17 @@
 // Post a new task to the work queue
 
 var amqp = require('amqplib');
-var when = require('when');
 
 amqp.connect('amqp://localhost').then(function(conn) {
-  return when(conn.createChannel().then(function(ch) {
+  return conn.createChannel().then(function(ch) {
     var q = 'task_queue';
     var ok = ch.assertQueue(q, {durable: true});
-    
+
     return ok.then(function() {
       var msg = process.argv.slice(2).join(' ') || "Hello World!";
       ch.sendToQueue(q, new Buffer(msg), {deliveryMode: true});
       console.log(" [x] Sent '%s'", msg);
       return ch.close();
     });
-  })).ensure(function() { conn.close(); });
-}).then(null, console.warn);
+  }).finally(function() { conn.close(); });
+}).catch(console.warn);

examples/tutorials/package.json

@@ -4,9 +4,8 @@
   "description": "The RabbitMQ tutorials, ported to amqplib",
   "main": "send.js",
   "dependencies": {
-    "amqplib": "",
-    "when": "",
-    "node-uuid": ""
+    "amqplib": "../..",
+    "node-uuid": "*"
   },
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1"

examples/tutorials/receive.js

@@ -5,17 +5,17 @@ var amqp = require('amqplib');
 amqp.connect('amqp://localhost').then(function(conn) {
   process.once('SIGINT', function() { conn.close(); });
   return conn.createChannel().then(function(ch) {
-    
+
     var ok = ch.assertQueue('hello', {durable: false});
-    
+
     ok = ok.then(function(_qok) {
       return ch.consume('hello', function(msg) {
         console.log(" [x] Received '%s'", msg.content.toString());
       }, {noAck: true});
     });
-    
+
     return ok.then(function(_consumeOk) {
       console.log(' [*] Waiting for messages. To exit press CTRL+C');
     });
   });
-}).then(null, console.warn);
+}).catch(console.warn);

examples/tutorials/receive_logs.js

@@ -25,4 +25,4 @@ amqp.connect('amqp://localhost').then(function(conn) {
       console.log(" [x] '%s'", msg.content.toString());
     }
   });
-}).then(null, console.warn);
+}).catch(console.warn);

examples/tutorials/receive_logs_direct.js

@@ -1,7 +1,7 @@
 #!/usr/bin/env node
 
 var amqp = require('amqplib');
-var all = require('when').all;
+var all = require('bluebird').all;
 var basename = require('path').basename;
 
 var severities = process.argv.slice(2);
@@ -42,4 +42,4 @@ amqp.connect('amqp://localhost').then(function(conn) {
                   msg.content.toString());
     }
   });
-}).then(null, console.warn);
+}).catch(console.warn);

examples/tutorials/receive_logs_topic.js

@@ -2,7 +2,7 @@
 
 var amqp = require('amqplib');
 var basename = require('path').basename;
-var all = require('when').all;
+var all = require('bluebird').all;
 
 var keys = process.argv.slice(2);
 if (keys.length < 1) {
@@ -16,29 +16,29 @@ amqp.connect('amqp://localhost').then(function(conn) {
   return conn.createChannel().then(function(ch) {
     var ex = 'topic_logs';
     var ok = ch.assertExchange(ex, 'topic', {durable: false});
-    
+
     ok = ok.then(function() {
       return ch.assertQueue('', {exclusive: true});
     });
-    
+
     ok = ok.then(function(qok) {
       var queue = qok.queue;
       return all(keys.map(function(rk) {
         ch.bindQueue(queue, ex, rk);
       })).then(function() { return queue; });
     });
-    
+
     ok = ok.then(function(queue) {
       return ch.consume(queue, logMessage, {noAck: true});
     });
     return ok.then(function() {
       console.log(' [*] Waiting for logs. To exit press CTRL+C.');
     });
-    
+
     function logMessage(msg) {
       console.log(" [x] %s:'%s'",
                   msg.fields.routingKey,
                   msg.content.toString());
     }
   });
-}).then(null, console.warn);
+}).catch(console.warn);

examples/tutorials/rpc_client.js

@@ -2,8 +2,7 @@
 
 var amqp = require('amqplib');
 var basename = require('path').basename;
-var when = require('when');
-var defer = when.defer;
+var Promise = require('bluebird');
 var uuid = require('node-uuid');
 
 // I've departed from the form of the original RPC tutorial, which
@@ -22,33 +21,33 @@ catch (e) {
 }
 
 amqp.connect('amqp://localhost').then(function(conn) {
-  return when(conn.createChannel().then(function(ch) {
-    var answer = defer();
-    var corrId = uuid();
-    function maybeAnswer(msg) {
-      if (msg.properties.correlationId === corrId) {
-        answer.resolve(msg.content.toString());
+  return conn.createChannel().then(function(ch) {
+    return new Promise(function(resolve) {
+      var corrId = uuid();
+      function maybeAnswer(msg) {
+        if (msg.properties.correlationId === corrId) {
+          resolve(msg.content.toString());
+        }
       }
-    }
 
-    var ok = ch.assertQueue('', {exclusive: true})
-      .then(function(qok) { return qok.queue; });
+      var ok = ch.assertQueue('', {exclusive: true})
+        .then(function(qok) { return qok.queue; });
 
-    ok = ok.then(function(queue) {
-      return ch.consume(queue, maybeAnswer, {noAck: true})
-        .then(function() { return queue; });
-    });
-
-    ok = ok.then(function(queue) {
-      console.log(' [x] Requesting fib(%d)', n);
-      ch.sendToQueue('rpc_queue', new Buffer(n.toString()), {
-        correlationId: corrId, replyTo: queue
+      ok = ok.then(function(queue) {
+        return ch.consume(queue, maybeAnswer, {noAck: true})
+          .then(function() { return queue; });
       });
-      return answer.promise;
-    });
 
-    return ok.then(function(fibN) {
-      console.log(' [.] Got %d', fibN);
+      ok = ok.then(function(queue) {
+        console.log(' [x] Requesting fib(%d)', n);
+        ch.sendToQueue('rpc_queue', new Buffer(n.toString()), {
+          correlationId: corrId, replyTo: queue
+        });
+      });
     });
-  })).ensure(function() { conn.close(); });
-}).then(null, console.warn);
+  })
+  .then(function(fibN) {
+    console.log(' [.] Got %d', fibN);
+  })
+  .finally(function() { conn.close(); });
+}).catch(console.warn);

examples/tutorials/rpc_server.js

@@ -36,4 +36,4 @@ amqp.connect('amqp://localhost').then(function(conn) {
       ch.ack(msg);
     }
   });
-}).then(null, console.warn);
+}).catch(console.warn);

examples/tutorials/send.js

@@ -1,10 +1,9 @@
 #!/usr/bin/env node
 
 var amqp = require('amqplib');
-var when = require('when');
 
 amqp.connect('amqp://localhost').then(function(conn) {
-  return when(conn.createChannel().then(function(ch) {
+  return conn.createChannel().then(function(ch) {
     var q = 'hello';
     var msg = 'Hello World!';
 
@@ -20,5 +19,5 @@ amqp.connect('amqp://localhost').then(function(conn) {
       console.log(" [x] Sent '%s'", msg);
       return ch.close();
     });
-  })).ensure(function() { conn.close(); });
-}).then(null, console.warn);
+  }).finally(function() { conn.close(); });
+}).catch(console.warn);

examples/tutorials/worker.js

@@ -25,4 +25,4 @@ amqp.connect('amqp://localhost').then(function(conn) {
       }, secs * 1000);
     }
   });
-}).then(null, console.warn);
+}).catch(console.warn);

examples/waitForConfirms.js

@@ -12,11 +12,11 @@ function mkCallback(i) {
 amqp.connect().then(function(c) {
   c.createConfirmChannel().then(function(ch) {
     for (var i=0; i < NUM_MSGS; i++) {
-      ch.publish('amq.topic', 'whatever', new Buffer('blah'), {}, mkCallback(i)); 
+      ch.publish('amq.topic', 'whatever', new Buffer('blah'), {}, mkCallback(i));
     }
     ch.waitForConfirms().then(function() {
       console.log('All messages done');
       c.close();
-    }, console.error);
+    }).catch(console.error);
   });
 });

lib/callback_model.js

@@ -5,7 +5,7 @@
 'use strict';
 
 var defs = require('./defs');
-var when = require('when'), defer = when.defer;
+var Promise = require('bluebird');
 var inherits = require('util').inherits;
 var EventEmitter = require('events').EventEmitter;
 var BaseChannel = require('./channel').BaseChannel;
@@ -313,15 +313,16 @@ ConfirmChannel.prototype.waitForConfirms = function(k) {
   unconfirmed.forEach(function(val, index) {
     if (val === null); // already confirmed
     else {
-      var confirmed = defer();
-      unconfirmed[index] = function(err) {
-        if (val) val(err);
-        if (err === null) confirmed.resolve();
-        else confirmed.reject(err);
-      };
-      awaiting.push(confirmed.promise);
+      var confirmed = new Promise(function(resolve, reject) {
+        unconfirmed[index] = function(err) {
+          if (val) val(err);
+          if (err === null) resolve();
+          else reject(err);
+        };
+      });
+      awaiting.push(confirmed);
     }
   });
-  return when.all(awaiting).then(function() { k(); },
+  return Promise.all(awaiting).then(function() { k(); },
                                  function(err) { k(err); });
 };