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build: allow builds from stdin for multi-node builders

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When building from same stream all nodes need to read
data from the same stream. In order to achive that there
is a new SyncMultiReader wrapper that sends the stream
concurrently to all readers. Readers must read at similar
speed or pauses will happen while they wait for each other.

Dockerfiles were already written to disk before sent. Now
the file written by first node is reused for others.

Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
This commit is contained in:
Tonis Tiigi
2024-08-13 11:03:04 +03:00
parent e00efeb399
commit adbcc2225e
5 changed files with 266 additions and 14 deletions
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2
controller/build/build.go
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@ -48,7 +48,7 @@ func RunBuild(ctx context.Context, dockerCli command.Cli, in controllerapi.Build
Inputs: build.Inputs{
ContextPath: in.ContextPath,
DockerfilePath: in.DockerfileName,
InStream: inStream,
InStream: build.NewSyncMultiReader(inStream),
NamedContexts: contexts,
},
Ref: in.Ref,