pnc

AWS Lambda allows you to run custom binaries as child processes.

However, if the packaged binary you're running on AWS Lambda uses shared libraries, they may not be available in the Lambda environment. If this is the case, your binary will terminate without any output. In my case, the exit status code was 127, which wasn't very helpful (typically this is "command not found.")

2015-11-18T00:50:10.731Z	521db901-8d8e-11e5-b9df-cd31cc90ece2	Calling phantom:  /var/task/phantomjs [ '/var/task/phantomjs-script.js' ]
2015-11-18T00:50:10.809Z	521db901-8d8e-11e5-b9df-cd31cc90ece2	child process exited with code 127

Linux's loader, ld.so, allows you (see manpage) to set an environment variable called LD_DEBUG that will output verbose information while the shared libraries are loaded.

Since Lambda doesn't let you set arbitrary environment variables, you need to set the environment

pnc

require 'xcodeproj'

# Avoid spaces, otherwise automatic crash symbolication breaks.
# To change how it appears to the user, set Bundle Display Name in the Info plist.
TARGET_NAME = "ExampleApp"

CONFIG = {"APP_BUNDLE_ID" => "com.example.example-app",
          "ASSETCATALOG_COMPILER_APPICON_NAME" => {debug: "AppIconDevelopment",
                                                   release: "AppIcon"},
          "ASSETCATALOG_COMPILER_LAUNCHIMAGE_NAME" => "LaunchImage"}

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Here is a link

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Bacon::Error: File comparison error `execution_output.txt` for install_custom_workspace:
--- DIFF -----------------------------------------------------------------------
   Attempting to activate Reachability (3.1.0)
   Activated Reachability at Reachability (3.1.0)
   Requiring nested dependencies ()
-  Creating possibility state for Reachability (3 remaining)
-    Attempting to activate Reachability (3.1.1)
+  Creating possibility state for Reachability (4 remaining)
+    Attempting to activate Reachability (3.2)
     Found existing spec (Reachability (3.1.0))

pnc

$ ruby --version                                                                              
ruby 2.1.1p76 (2014-02-24 revision 45161) [x86_64-darwin13.0]

$ bundle exec rake

rm -rf banana-lib && tar zxf banana-lib.tar.gz
Using ruby 2.1.1p76 (2014-02-24 revision 45161) [x86_64-darwin13.0]

pnc

Using OTP's observer (appmon replacement) remotely

$ ssh remote-host "epmd -names"
epmd: up and running on port 4369 with data:
name some_node at port 58769

Note the running on port for epmd itself and the port of the node you're interested in debugging. Reconnect to the remote host with these ports forwarded:

$ ssh -L 4369:localhost:4369 -L 58769:localhost:58769 remote-host

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#import <CommonCrypto/CommonDigest.h>

// From the people who brought you goto fail;
// http://www.opensource.apple.com/source/CommonCrypto/CommonCrypto-55010/LocalTests/XTSTest/hexString.c

static char PIHexbyteMap[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
static int PIHexbyteMapLen = sizeof(PIHexbyteMap);

/* Utility function to convert nibbles (4 bit values) into a hex character representation */
static char

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[2014-03-06T21:15:52+00:00] INFO: Forking chef instance to converge...
[2014-03-06T21:15:52+00:00] INFO: *** Chef 11.10.4 ***
[2014-03-06T21:15:52+00:00] INFO: Chef-client pid: 1478
[2014-03-06T21:15:53+00:00] INFO: Setting the run_list to ["recipe[dashboard::default]"] from JSON
[2014-03-06T21:15:53+00:00] INFO: Run List is [recipe[dashboard::default]]
[2014-03-06T21:15:53+00:00] INFO: Run List expands to [dashboard::default]
[2014-03-06T21:15:53+00:00] INFO: Starting Chef Run for saucy
[2014-03-06T21:15:53+00:00] INFO: Running start handlers
[2014-03-06T21:15:53+00:00] INFO: Start handlers complete.
[2014-03-06T21:15:53+00:00] INFO: directory[/var/spool/rsyslog] owner changed to 0

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ATVManagedTableSection *inboxSection = [[ATVManagedTableSection alloc] initWithIdentifier:@"inbox"];
[inboxSection setManagedObjectContext:context andFetchRequest:fetchRequest];
[inboxSection registerNib:@"PIMessageCell" forIdentifier:@"PIMessageCell"];
[inboxSection setCellSource:^UITableViewCell *(ATVTableSection *section, NSUInteger index, id object) {
  UITableViewCell *cell = [section dequeueReusableCellWithIdentifier:@"PIMessageCell"];
  return cell;
}];
[inboxSection setConfigureCell:^(ATVTableSection *section, UITableViewCell *cell, NSUInteger index, id object) {
  PIMessageCell *messageCell = (PIMessageCell *)cell;
  [messageCell setMessage:object];

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*.xcdatamodel)
      echo "`basename $1 .xcdatamodel`.mom"
      echo "`basename ${1} .xcdatamodel`.mom"
      xcrun momc "${PODS_ROOT}/$1" "${CONFIGURATION_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename ${1} .xcdatamodel`.mom"
      ;;