Commit Graph

29 Commits

Author SHA1 Message Date
Solomon Hykes c5752cb1a0 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 2d616c1231 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 3b2dcdf7e4 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 51f1cfdb9f 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 d87bffe5ef 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 75f20c69a8 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 4fcace2d34 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 fee9a210e5 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 2af549d2a1 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 e3b4161639 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 18649cb2be 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 683a084c6f 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 c39abcb932 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 021fd05218 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 1a9938c54b 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 3e832a63df 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 651e8b9dc6 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 8a2feadbda 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 da05c9ca6e 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 a6e5750448 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 5a03c06021 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 0095843345 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 55d2fd8870 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 111aa2e4d6 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 295c5b9854 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 2e0643214d 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 161d177941 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 78617ec069 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 22994f8a74 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