Async api (#128)

* Refactored Transport for better async use

Still a bit rough, but it now builds a big future using combinators. It
still does one `Runtime::block_on()` to keep the existing API, but this
is a first up before making the whole API async.

* Migrate most APIs to be Future-based

I still need to finish a few of the more tricky ones that I've commented
out for now, but most of it compiles and some examples work. In
particular, `Docker::stats()` now properly returns an async stream of
stats.

* Fix events and containerinspect examples

* Fix imageinspect, images, info and top examples

* Fix containercreate, imagedelete and imagepull examples

* Fix more examples

* Add back debug statement in Transport::request

* De-glob imports in examples

* Remove unused imports in examples

* Fix NetworkCreateOptions serialization

* Add back error message extraction in Transport

* Fix Container::create serialization of options

* Add containerdelete example

* Simplify result

* Fix some error handling to remove unwrap()

* Fix Image::export()

* Fix imagebuild example

* Add adapter from Stream of Chunks to AsyncRead

Having an `AsyncRead` is required to be able to use the `FramedRead` and
`Decoder` stuff from tokio_codec. This code is "borrowed" from
https:/github.com/ferristseng/rust-ipfs-api though should probably be
moved to its own crate or to tokio_codec.

* Fix Container::logs()

It now properly demuxes stdout/stderr, and returns a `Stream<Item =
TtyLine>`.

* Fix Container::export()

* Use LineCodec for streaming JSON

Although in my limited testing it seemed to work fine, there is no
guarantee that 1 chunk == 1 piece of valid JSON. However, each JSON
structure seems to be serialized on one line, so use LineCodec to turn
the body into a stream of lines, then deserialize over this.

* Fix serialization of ExecContainerOptions

* Fix Container::exec() (kind of...)

* Simplify deserialisation in Image::delete()

* Small clean-ups

* More clean ups

* Fix rustdoc + remove extraneous "extern crate"

* Fix doc example

* Fix formatting

1 files changed, 4 insertions, 0 deletions

diff --git a/Cargo.toml b/Cargo.toml
index 42d978d..e399796 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,7 +12,9 @@ license = "MIT"
 
 [dependencies]
 byteorder = "1"
+bytes = "0.4"
 flate2 = "1"
+futures = "0.1"
 http = "0.1"
 hyper = "0.12"
 hyper-openssl = "0.6"
@@ -22,6 +24,8 @@ mime = "0.3"
 openssl = "0.10"
 tar = "0.4"
 tokio = "0.1"
+tokio-codec = "0.1"
+tokio-io = "0.1"
 url = "1.7"
 serde = "1"
 serde_derive = "1"