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feat: add support for Buildkite agent-stack-k8s pipelines #11

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feat: add support for Buildkite agent-stack-k8s pipelines #11

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50 changes: 48 additions & 2 deletions exe-nix-buildkite/Main.hs
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Original file line number Diff line number Diff line change
Expand Up @@ -45,10 +45,26 @@ import Data.Text (Text, isPrefixOf, pack, unpack)
import qualified Data.Text as T
import Data.Text.IO (readFile)

data PipelineType = Nix | Kubernetes

main :: IO ()
main = do
jobsExpr <- fromMaybe "./jobs.nix" . listToMaybe <$> getArgs

pipelineType <- do
pt <- lookupEnv "PIPELINE_TYPE"
case pt of
Nothing -> return Nix
Just "kubernetes" -> return Kubernetes
Just "nix" -> return Nix
Just invalid -> error $ "Invalid PIPELINE_TYPE" <> invalid

containerImage <- do
image <- lookupEnv "KUBERNETES_CONTAINER_IMAGE"
case image of
Nothing -> return "nixos/nix:latest"
Just image' -> return $ pack image'

postBuildHook <- do
cmd <- lookupEnv "POST_BUILD_HOOK"
case cmd of
Expand Down Expand Up @@ -106,7 +122,37 @@ main = do

g <- foldr (\(_, drv) m -> m >>= \g -> add g drv) (pure empty) drvs

let steps = map (uncurry step) drvs
let steps Kubernetes = map (uncurry step) drvs
where
step label drvPath =
( label
, object
[ "label" .= unpack label
, "plugins"
.= [ object
[ "kubernetes"
.= [ object
[ "podSpec"
.= object
[ "containers"
.= [ object
[ "image" .= containerImage
, "command" .= String "nix-store"
, "args" .= (postBuildHook <> ["-r", drvPath])
]
]
]
]
]
]
]
, "key" .= stepify drvPath
, "depends_on" .= dependencies
]
)
where
dependencies = map stepify $ filter (`elem` map snd drvs) $ drop 1 $ reachable drvPath g
steps Nix = map (uncurry step) drvs
where
step label drvPath =
( label
Expand All @@ -124,7 +170,7 @@ main = do
encode $
object
[ "agents" .= agentTags
, "steps" .= map snd (sortOn fst steps)
, "steps" .= map snd (sortOn fst $ steps pipelineType)
]

-- Transform nix platforms into buildkite emoji
Expand Down
2 changes: 1 addition & 1 deletion nix-buildkite-plugin.cabal
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@@ -1,6 +1,6 @@
cabal-version: 3.0
name: nix-buildkite-plugin
version: 0.2.0.0
version: 0.3.0.0
license-file: LICENSE
author: Hackworth Ltd <[email protected]>
maintainer: [email protected]
Expand Down