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Author SHA1 Message Date
Solomon Hykes
caca8eec08 beam/data: Message.GetOne() returns the last value set at a key 
This is a convenience for callers which are only interested in one value
per key. Similar to how HTTP headers allow multiple keys per value, but
are often used to store and retrieve only one value.

Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-05-09 17:01:27 -07:00
Solomon Hykes
c2a237f019 Fix stdin handling in engine.Sender and engine.Receiver 
This introduces a superficial change to the Beam API:

* `beam.SendPipe` is renamed to the more accurate `beam.SendRPipe`
* `beam.SendWPipe` is introduced as a mirror to `SendRPipe`

There is no other change in the beam API.

Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-05-09 15:39:55 -07:00
Alexander Larsson
bf43f17c56 beam: Add simple framing system for UnixConn 
This is needed for Send/Recieve to correctly handle borders between
the messages.

The framing uses a single 32bit uint32 length for each frame, of which
the high bit is used to indicate whether the message contains a file
descriptor or not. This is enough to separate out each message sent
and to decide to which message each file descriptors belongs, even
though multiple Sends may be coalesced into a single read, and/or one
Send can be split into multiple writes.

Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-05-01 11:06:01 -07:00
Tianon Gravi
f4cb0afb99 Fix various MAINTAINERS format inconsistencies 
Docker-DCO-1.1-Signed-off-by: Andrew Page <admwiggin@gmail.com> (github: tianon)
 2014-04-30 11:22:11 -06:00
Alexander Larsson
31e3d94a4f beam: Add more tests to unix_test.go 
These are failing, and indicate things that need to be fixed.  The
primarily problem is the lack of framing between beam messages.

Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
[solomon@docker.com: rebased on master]
Signed-off-by: Solomon Hykes <solomon@docker.com>
 2014-04-30 02:10:09 -07:00
Solomon Hykes
c5b6f20d56 Fix Go formatting in beam and dockerscript 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 16:16:29 -07:00
Solomon Hykes
be7d4c5b8c beam/examples/beamsh: 'chdir' changes the current directory 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:24 -07:00
Solomon Hykes
1794406033 beam/examples/beamsh: 'exec' can communicate with its child via beam. 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:24 -07:00
Solomon Hykes
9598cba7c0 beam/examples/beamsh: use beam.Router to simplify 'multiprint' and fix job passthrough 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:23 -07:00
Solomon Hykes
d1528caaac beam: new routing functions Route.KeyEquals, Route.KeyIncludes, Route.NoKey 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:23 -07:00
Solomon Hykes
df3bbb2875 beam/examples/beamsh: use beam.Router to simplify 'trace' 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:23 -07:00
Solomon Hykes
1dbb699e6a beam/examples/beamsh: move builtins to a separate file for readability 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:23 -07:00
Solomon Hykes
4a8dc511e2 beam/examples/beamsh: simplify commands by always creating and sending stdout and stderr for them 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:23 -07:00
Solomon Hykes
5b977c60ce beam/examples/beamsh: use beam.Router to simplify 'logger' 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:23 -07:00
Solomon Hykes
83a19e4f1d beam/examples/beamsh: use beam.Router to simplify the 'stdio' command 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:23 -07:00
Solomon Hykes
36231f23a3 beam: Router can route beam messages with a convenient set of rules and handlers 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:23 -07:00
Solomon Hykes
992a3f9c96 beam/examples/beamsh: move example scripts to scripts/ 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:22 -07:00
Alexander Larsson
cd911b83ce beam: Fix double close of fds in SendUnix 
Instead of calling syscall.Close() on the fds in sendUnix() we call
Close() on the *os.File in Send(). Otherwise the fd will be closed, but
the *os.File will continue to live, and when it is finalized the
fd will be closed (which by then may be reused and can be anything).

This also adds a note to Send() the the file is closed.

Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
 2014-04-22 15:50:22 -07:00
Solomon Hykes
8104b14a8d beam: more unit tests 
This adds testing to SendConn.

Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:22 -07:00
Solomon Hykes
0e093988bf beam/examples/beamsh: add scripts to reproduce various bugs 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:22 -07:00
Solomon Hykes
69e180cae7 beam/examples/beamsh: fix 'print' to be pass-through 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:22 -07:00
Solomon Hykes
ae0b194839 beam/examples/beamsh: rename 'log' to 'logger' to avoid conflict with stdout/stderr 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:22 -07:00
Solomon Hykes
c92abca6c7 beam/examples/beamsh: 'prompt' asks the user for a value and sends it. 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:22 -07:00
Solomon Hykes
5220dbeffd beam/examples/beamsh: commands are messages. 
Commands in the pipeline should either implement or pass-through command messages.

This amounts to a proof-of-concept implementation of the "pipeline"
design of Docker plugins.

Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:22 -07:00
Solomon Hykes
2edf4802d8 beam/examples/beamsh: cosmetic fix in Fatalf 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:22 -07:00
Solomon Hykes
c27c56ca37 beam: replace SendPair() with the simpler SendConn() 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:21 -07:00
Solomon Hykes
e92f305c1c beam/examples/beamsh: miniserver.ds demo 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:21 -07:00
Solomon Hykes
9c5fdb249f beam: improve the API with Sender/Receiver interfaces and utilities: Copy/SendPipe/SendPair 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:21 -07:00
Alexander Larsson
071e5e5a65 beam: Make extracted Fds CloseOnExec 
Grab forklock to make sure no forks accidentally inherit the new fds
before they are made CLOEXEC There is a slight race condition between
ReadMsgUnix returns and when we grap the lock, so this is not
perfect. Unfortunately There is no way to pass MSG_CMSG_CLOEXEC to
recvmsg() nor any way to implement non-blocking i/o in go, so this is
hard to fix.

Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
 2014-04-22 15:50:21 -07:00
Solomon Hykes
f534839c8b beam/examples/beamsh: add a few example dockerscripts 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:21 -07:00
Solomon Hykes
7958f295e8 beam/examples/beamsh: simplify code by using sendWPipe utility 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:21 -07:00
Solomon Hykes
f7971cfc1e beam/examples/beamsh: move code around for readability 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:21 -07:00
Solomon Hykes
11c2feae5b beam/examples/beamsh: 'exec' adds 'fromcmd' field to its output 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:21 -07:00
Solomon Hykes
b27e7baa02 beam/examples/beamsh: simple 'log' command tees streams to a local directory 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:21 -07:00
Solomon Hykes
96bb0cf4a4 beam/examples/beamsh: 'render' and 'beamsh -x' 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:20 -07:00
Solomon Hykes
2198d2423c beam/examples/beamsh: run commands in an implicit context of pre-loaded 'plugins' 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:20 -07:00
Solomon Hykes
e99e1288cc beam/examples/beamsh: convenience commands 'devnull', 'echo' and 'stdio' 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:20 -07:00
Solomon Hykes
88b74798a4 beam/examples/beamsh: 'emit' supports key=value syntax to compose arbitrary objects 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:20 -07:00
Solomon Hykes
529e741f08 beam/examples/beamsh: support for background commands with '&' terminator 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:20 -07:00
Solomon Hykes
086724e1a3 beam/data: Message.Parse creates a message from shell-style 'key=value' arguments 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:20 -07:00
Solomon Hykes
1a3c8051c5 beam/examples/beamsh: scripts can be passed as filenames 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:20 -07:00
Solomon Hykes
6344b09af3 beam/examples/beamsh: remote communication over beam (experimental). 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:20 -07:00
Solomon Hykes
d4fb68ee0f beam/examples/beamsh: 'in' chdirs to a directory. 'pass' does simple passthrough 
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
 2014-04-22 15:50:19 -07:00
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