85 lines
2.7 KiB
Nix
85 lines
2.7 KiB
Nix
# This file configures the primary build pipeline used for the
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# top-level list of depot targets.
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#
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# It outputs a "YAML" (actually JSON) file which is evaluated and
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# submitted to Buildkite at the start of each build. This means we can
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# dynamically configure the pipeline execution here.
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{ depot, lib, pkgs, ... }:
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let
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inherit (builtins) concatStringsSep foldl' map toJSON;
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inherit (lib) singleton;
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inherit (pkgs) writeText;
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# Create an expression that builds the target at the specified
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# location.
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mkBuildExpr = target:
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let
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descend = expr: attr: "builtins.getAttr \"${attr}\" (${expr})";
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targetExpr = foldl' descend "import ./. {}" target.__readTree;
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subtargetExpr = descend targetExpr target.__subtarget;
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in if target ? __subtarget then subtargetExpr else targetExpr;
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# Create a pipeline label from the targets tree location.
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mkLabel = target:
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let label = concatStringsSep "/" target.__readTree;
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in if target ? __subtarget
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then "${label}:${target.__subtarget}"
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else label;
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# Create a pipeline step from a single target.
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#
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# If the build fails, Buildkite metadata is updated to mark the
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# pipeline as failed. Buildkite has a concept of a failed pipeline
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# regardless, but this data is not accessible.
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mkStep = target: {
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command = ''
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nix-build -E '${mkBuildExpr target}' || (buildkite-agent meta-data set "failure" "1"; exit 1)
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'';
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label = ":nix: ${mkLabel target}";
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};
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# Protobuf check step which validates that changes to .proto files
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# between revisions don't cause backwards-incompatible or otherwise
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# flawed changes.
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protoCheck = {
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command = "${depot.nix.bufCheck}/bin/ci-buf-check";
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label = ":water_buffalo:";
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};
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# This defines the build pipeline, using the pipeline format
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# documented on https://buildkite.com/docs/pipelines/defining-steps
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#
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# Pipeline steps need to stay in order.
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pipeline.steps =
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# Zero the failure status
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[
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{
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command = "buildkite-agent meta-data set 'failure' '0'";
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label = ":buildkite:";
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}
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{ wait = null; }
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]
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# Create build steps for each CI target
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++ (map mkStep depot.ci.targets)
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++ [
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# Simultaneously run protobuf checks
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protoCheck
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# Wait for all previous checks to complete
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({
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wait = null;
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continue_on_failure = true;
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})
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# Wait for all steps to complete, then exit with success or
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# failure depending on whether any failure status was written.
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# This step must be :duck:! (yes, really!)
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({
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command = "exit $(buildkite-agent meta-data get 'failure')";
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label = ":duck:";
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})
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];
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in (writeText "depot.yaml" (toJSON pipeline))
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