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Author SHA1 Message Date
Solomon Hykes
d955d77dc8 beam/examples/beamsh: 'beamsend' command serializes all messages and sends them over a network connection 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:19 -07:00
Solomon Hykes
f49734592c beam/examples/beamsh: 'exec' command correctly closes stdout and stderr when the process exists 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:19 -07:00
Solomon Hykes
7e73a97a41 beam/examples/beamsh: don't print discarded messages in Devnull 
This avoids false alarms when process exits without printing. Devnull
doesn't require synchronization.

Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:19 -07:00
Solomon Hykes
0f36b222f3 beam/examples/beamsh: more useful debugging 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:19 -07:00
Solomon Hykes
ca0aacdb6b beam/data: expose EncodeString for convenience access to the underlying netstring primitive 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:19 -07:00
Solomon Hykes
251353380e beam/examples/beamsh: utility function 'fileToConn' 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:19 -07:00
Solomon Hykes
23dd017763 beam/examples/beamsh: 'connect' command 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:19 -07:00
Solomon Hykes
7c4e5e60e8 beam/examples/beamsh: 'exec' and 'listen' commands 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:19 -07:00
Solomon Hykes
0dfc004450 beam/examples/beamsh: prettier devnull 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:18 -07:00
Solomon Hykes
bfb13651fa beam/data: prettier Message.Pretty() 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:18 -07:00
Solomon Hykes
f636d3fcec beam/examples/beamsh: prettier 'trace' command 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:18 -07:00
Solomon Hykes
4841bc9226 beam/data: convenience Message.Pretty() function 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:18 -07:00
Solomon Hykes
f295ccc72a beam/examples/beamsh: basic implementation of the pipeline design, with static handlers for now. 
In the pipeline design, several beam commands can be run concurrently,
with their respective inputs and outputs connected in such a way that
beam messages flow from the first to last. This is similar to the way
a unix shell executes commands in a pipeline: instead of STDIN and
STDOUT, each beam command has a "BEAMIN" and "BEAMOUT".

Since beam allows for richer communication than plain byte streams, beam
pipelines can express more powerful computation, while retaining the
fundamental elegance and ease of use of unix-style composition.

Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:18 -07:00
Solomon Hykes
9f4bcf010a beam/examples/beamsh: better debugging messages 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:18 -07:00
Solomon Hykes
5efb90b0cd beam/examples/beamsh: simple 'exec' command 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:18 -07:00
Solomon Hykes
8b8e477ede beam/examples/beamsh: catch introspection calls from jobs for proper nesting 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:18 -07:00
Solomon Hykes
5df3aaeda2 beam: fix FD leaks in SendPipe 
This fixes file descriptor leaks in the SendPipe function.

Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:18 -07:00
Solomon Hykes
3b5c1c4203 beam: more hooks for interactive debugging 
This inserts low-level hooks for interactive step-by-step debugging.
Hooks are triggered by setting the *TEST* environment variable.

This is particularly useful for tracking down file descriptor leaks,
double-closing, or other issues which are difficult to debug with
the usual toolbox.

Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:17 -07:00
Solomon Hykes
a14c83eca3 beam/examples/beamsh: first try at nested execution 
The "wiring" is broken because engine does not keep a reference for handling introspection calls.

Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:17 -07:00
Solomon Hykes
438caf6e06 beam/examples/beamsh: fix a bug in the log command 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:17 -07:00
Solomon Hykes
cd44538901 beam/data: convenience Message.Get 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:17 -07:00
Solomon Hykes
b78465fc2a beam/examples/beamsh: use beam/data 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:17 -07:00
Solomon Hykes
dd23e21313 beam/data: Message.Bytes() convenience method 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:17 -07:00
Solomon Hykes
53602b2464 beam/data: fix a bug in encoding of multi-value maps 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:17 -07:00
Solomon Hykes
dbbde543b1 beam/data: convenience Message type for chained manipulation 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:17 -07:00
Solomon Hykes
ccdcd9ff0c Beam: remove leftover debugging messages 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:17 -07:00
Solomon Hykes
0d1d823d2f beam/examples/beamsh: hide debug messages in examples/beamsh by default 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:17 -07:00
Solomon Hykes
132a2bf929 beam/data: a simple format for sending structured data over beam 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:16 -07:00
Solomon Hykes
572952d6ce beam/examples/beamsh: more bells and whistles for demos 
* Automatically switch to interactive mode when stdin is a terminal

* Basic implementation of "responses"

Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:16 -07:00
Solomon Hykes
b1090576ae Beam: fix bug in beamsh which 'swapped' FDs because of underlying implementation of net.FileConn 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:16 -07:00
Solomon Hykes
43331921b0 Beam: don't close the attachment FD when closing superfluous FDs 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:16 -07:00
Solomon Hykes
24c09d0029 Beam: debugging hooks for easy step-by-step inspection of the FD table 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:16 -07:00
Solomon Hykes
83adf99565 beam/examples/beamsh: use 'log' command to pass stdout 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:16 -07:00
Solomon Hykes
0248bb8152 beam/examples/beamsh: basic execution of commands, with in-process beam and dummy handlers 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:16 -07:00
Solomon Hykes
bccd390ead Beam: Send: pass the underlying error unchanged to allow io.EOF detection 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:15 -07:00
Solomon Hykes
f4c6f14d0a pkg/dockerscript: expose a simple, clean API with a single Parse method 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:15 -07:00
Solomon Hykes
d1f2f389ff beam/examples/beamsh: correctly parse nested commands 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:15 -07:00
Solomon Hykes
d188c734e9 pkg/dockerscript: a simple shell-like syntax to express docker operations 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:15 -07:00
Solomon Hykes
358c2f3ca4 Beam: beamsh is a mini-shell which runs processes and communicates with them over beam 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:15 -07:00
Solomon Hykes
f3671ea62d Beam: basic test harness for the unix socket implementation. 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:15 -07:00
Solomon Hykes
968d5bb08f Beam: USocketPair returns a *net.UnixConn socket pair for convenience. 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:15 -07:00
Solomon Hykes
be03962d64 Beam: fix file descriptor leaks 
* Close all file descriptors successfully sent as attachment
* Close duplicate file descriptors created by net.FileCon and net.UnixConn.File

Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:15 -07:00
Solomon Hykes
95b759ad16 Beam: change the prototype of SendPipe() to return a *net.UnixSocket 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:14 -07:00
Solomon Hykes
0a187f629a Beam: allow sending messages without attachments. 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:14 -07:00
Solomon Hykes
c008283f8d Beam: convenience functions Listen and Connect 
These convenience functions expose a familiar face to the unknown and bizarre world of beam networking.

Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:14 -07:00
Solomon Hykes
932149b2a7 Beam: a simple stream-oriented communication protocol for distributed systems. 
This patch includes a stripped down implementation with a bare minimum
unix socket transport. It relies on fd passing for stream multiplexing.

The purpose of this first patch is to allow implementation of dynamic
linking, which will allow advanced service discovery.

Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:14 -07:00