for k, v of af
commands[k] = v unless k is 'login'
-# this is the friendly one that updates the files then restarts the app
+# this is the simple one that updates the files then restarts the app.
+# to update without severing current connections or downtime, see app_publish_seamless
commands.app_publish = (token, app_name, zip_file, callback) ->
async.waterfall [
(callback) => @api 'app_update_files', app_name, zip_file, callback
(res, callback) => @api 'app_restart', app_name, callback
], callback
-commands.app_set_state = (token, app_name, state, callback) ->
+
+# This uses a pair of apps to get a seamless upgrades. ie the site is never
+# down, and connections that are open at the time of upgrade are given 10
+# seconds to close.
+#
+# Requirements:
+#
+# 1. There must be two apps with the same name except one has an underscore at
+# the end and the other doesn't.
+#
+# 2. One of these apps must be running, and must have the domain names mapped
+# to it.
+#
+# 3. The other must be stopped, and must not have the domain names mapped to
+# it. (just it's *.af.com address.)
+#
+# Pass the app name without the underscore at the end, and app_publish_seamless
+# will figure out which is which
+commands.app_publish_seamless = (token, app_name, zip_file, callback) ->
+ async.auto {
+ info1: (cb) => @api 'app_info', app_name, cb
+ info2: (cb) => @api 'app_info', app_name + '_', cb
+ infos: ['info1', 'info2', (cb, args) ->
+ # FIXME check for other requirements and bail if not met
+ if args.info1.state is 'STOPPED'
+ cb null, new: args.info1, old: args.info2
+ else
+ cb null, new: args.info2, old: args.info1
+ ]
+ push: ['infos', (cb, args) =>
+ @api 'app_update_files', args.infos.new.name, zip_file, cb
+ ]
+ copy_uris: ['push', 'infos', (cb, args) =>
+ # There's a bug in the server where you can't set new uris and
+ # start the app in the same app_set_info call
+ for u in args.infos.old.uris
+ args.infos.new.uris.push u unless u.substr(-6) is '.af.cm'
+ @api 'app_set_info', args.infos.new.name, args.infos.new, cb
+ ]
+ new_info_again: ['copy_uris', 'infos', (cb, args) =>
+ @api 'app_info', args.infos.new.name, cb
+ ]
+ start_new: ['new_info_again', (cb, args) =>
+ args.new_info_again.state = 'STARTED'
+ @api 'app_set_info', args.new_info_again.name, args.new_info_again, cb
+ ]
+ hide_old: ['start_new', 'infos', (cb, args) =>
+ just_af = []
+ for u in args.infos.old.uris
+ just_af.push u if u.substr(-6) is '.af.cm'
+ args.infos.old.uris = just_af
+ @api 'app_set_info', args.infos.old.name, args.infos.old, cb
+ ]
+ wait_for_old_connections: ['hide_old', (cb) =>
+ seconds = 10
+ log_id = @log_start "waiting #{seconds} seconds for connections to old instance to finish"
+ timeout seconds * 1000, =>
+ @log_end(log_id)
+ cb()
+ ]
+ old_info_again: ['hide_old', 'infos', (cb, args) =>
+ @api 'app_info', args.infos.old.name, cb
+ ]
+ stop_old: ['wait_for_old_connections', 'old_info_again', (cb, args) =>
+ args.old_info_again.state = 'STOPPED'
+ @api 'app_set_info', args.old_info_again.name, args.old_info_again, cb
+ ]
+ # TODO when we get into sending manifests, we may need to update_files to infos.old.name too
+ }, callback
+
+app_set_state = (token, app_name, state, callback) ->
async.waterfall [
(callback) =>
@api 'app_info', app_name, callback
], callback
commands.app_start = (token, app_name, callback) ->
- @api 'app_set_state', app_name, 'STARTED', callback
+ app_set_state.call this, token, app_name, 'STARTED', callback
commands.app_stop = (token, app_name, callback) ->
- @api 'app_set_state', app_name, 'STOPPED', callback
+ app_set_state.call this, token, app_name, 'STOPPED', callback
commands.app_restart = (token, app_name, callback) ->
class Session
constructor: ->
@token = 0
+ @verbose = true
+ @log_nest = 0
+ @log_mid = 0
+ @log_id = 0
+
+ log_whitespace: ->
+ out = ''
+ out += '\n' if @log_mid
+ for i in [0...@log_nest]
+ out += '\t'
+ return out
+
+ log_start: (msg) ->
+ return unless @verbose
+ @log_id += 1
+ process.stdout.write "#{@log_whitespace()}#{@log_id}: #{msg}"
+ @log_nest += 1
+ @log_mid = @log_id
+ return @log_id
+
+ log_end: (start_id) ->
+ return unless @verbose
+ @log_nest -= 1
+ if @log_mid is start_id
+ process.stdout.write "... done\n"
+ else
+ process.stdout.write "#{@log_whitespace()}#{start_id} done\n"
+ @log_mid = 0
api: (call, args..., callback) ->
async.waterfall [
when 0
get_token callback
when -1
- login callback
+ login.call this, callback
else
callback null, @token
(token, callback) =>
@token = token
+ log_id = @log_start [call, args...].join ' '
# commands implemented in client.coffee need "this" pointing to the session
- commands[call].call this, @token, args..., callback
+ commands[call].call this, @token, args..., (err, the_rest...) =>
+ @log_end(log_id) unless err?
+ callback err, the_rest...
], (err, result) =>
# eg /app/xxx/stats sometimes returns 404 with wrong auth token
if err?.code is 403 or err?.code is 404
else
callback err, result
-ask = (opts, callback) ->
- process.stdout.write opts.prompt
- process.stdin.setEncoding 'utf8'
- process.stdin.resume()
- process.stdin.once 'data', (line) ->
- if opts.silent
- # send ^[[A^[[2K to move the cursor up one line, then clear that line
- process.stdout.write new Buffer [27, 91, 65, 27, 91, 50, 75]
- process.stdout.write opts.prompt + "***\n"
- process.stdin.pause()
- callback null, (line.substr 0, line.length - 1)
+ ask: (opts, callback) ->
+ process.stdout.write @log_whitespace() + opts.prompt
+ process.stdin.setEncoding 'utf8'
+ process.stdin.resume()
+ process.stdin.once 'data', (line) =>
+ if opts.silent
+ # send ^[[A^[[2K to move the cursor up one line, then clear that line
+ process.stdout.write new Buffer [27, 91, 65, 27, 91, 50, 75]
+ process.stdout.write @log_whitespace() + opts.prompt + "***\n"
+ process.stdin.pause()
+ @log_mid = 0
+ callback null, (line.substr 0, line.length - 1)
get_token = (callback) ->
fs.readFile token_file, 'utf8', (err, token) ->
else
callback null, token
-login = (callback) ->
+login_callbacks = []
+login = (real_callback) ->
+ login_callbacks.push real_callback
+ return if login_callbacks.length > 1
+
+ callback = (err, token) ->
+ while login_callbacks.length > 0
+ login_callbacks.shift()(err, token)
+
async.waterfall [
- (callback) -> async.series [
- (callback) -> ask prompt: 'username: ', callback
- (callback) -> ask prompt: 'password: ', silent: true, callback
+ (callback) => async.series [
+ (callback) => @ask prompt: 'username: ', callback
+ (callback) => @ask prompt: 'password: ', silent: true, callback
], callback
([username, password], callback) ->
af.login username, password, callback
Got questions, comments, patches, etc.? Contact Jason Woofenden