mirror of https://github.com/grafana/grafana.git
93 lines
4.1 KiB
Bash
93 lines
4.1 KiB
Bash
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#!/usr/bin/env bash
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set -eo pipefail
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# MUST BE RUN FROM GRAFANA ROOT DIR
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test -d cue
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# Must have latest cue and cuetsy
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if ! command -v cue &> /dev/null; then
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echo "must install cue on PATH"
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exit 1
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fi
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if ! command -v cuetsy &> /dev/null; then
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echo "must install cuetsy on PATH"
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exit 1
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fi
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# TODO Everything here needs to be moved into custom CUE logic in a Go program.
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# It _might_ be possible to do what we want with some CUE tools magic
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# (https://pkg.go.dev/cuelang.org/go@v0.3.0-beta.5/pkg/tool), but unless that
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# turns out to be pretty straightforward, it's probably better to encode our
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# filesystem semantics there.
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# Enumerate and move all CUE files under packages/grafana-{data,ui} into
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# respective cue subdir. These subdirs are where we place assembled
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# definitions, where Go loads from, and where other CUE - including CUE defined
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# in plugins - import from.
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mkdir -p cue/ui cue/data
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rm -f {cue/ui/gen.cue,cue/data/gen.cue}
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# TODO decide if multiple or single files seems like better ergonomics
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# shellcheck disable=SC2046
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cue def -s $(find packages/grafana-ui -type f -name "*.cue") > cue/ui/gen.cue
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# shellcheck disable=SC2046
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cue def -s $(find packages/grafana-data -type f -name "*.cue") > cue/data/gen.cue
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# Horrible hack to remove import statements.
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#
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# HACK-IMPOSED CONSTRAINT: Only works for single-line imports, so we can ONLY use
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# single-line imports in CUE files until this is improved! Expressly only here
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# as a hack because we can't make this better with vanilla cue.
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#
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# HACK-IMPOSED CONSTRAINT: Can't import between @grafana/ui and @grafana/data,
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# because those imports will also be removed
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#
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# TODO move a more careful import-elimination check into a Go tool
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#
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# It's important to understand why this is necessary, though. We are expecting
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# that these core components may depend on each other - e.g., how
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# GraphTooltipOptions composes in TooltipMode. We have to preserve those
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# literal identifiers in our assembled CUE, so that when a panel plugin's
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# models.cue imports and references something like GraphTooltipOptions in CUE,
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# it's still the same identifier as appeared in the original core models.cue
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# files, AND therefore is exactly the identifier that appears in
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# cuetsy-generated @grafana/{ui,data} packages. That is, as long as we preserve
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# the relation between the identifier "GraphTooltipOptions" as a top-level
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# importable thing at all stages on the CUE side, then everything on the
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# TypeScript side will line up.
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sed -i -e 's/^import.*//g' {cue/ui/gen.cue,cue/data/gen.cue}
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# Remove all qualified identifiers
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# (https://cuelang.org/docs/references/spec/#qualified-identifiers) from the
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# generated CUE files.
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#
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# Even worse hack than the above, but part and parcel with having imports. By
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# assembling the CUE inputs together into a single dir in a single package (and
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# even in a single file, though single dir is sufficient), we've obviated the
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# need for imports and qualified identifiers; CUE's loader logic concats
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# everything into a single instance.
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#
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# HACK-IMPOSED CONSTRAINT: No selectors (foo.bar,
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# https://cuelang.org/docs/references/spec/#qualified-identifiers), at all.
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# Thus, no nested identifiers. This is a horrible sledgehammer. It makes it
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# impossible to correctly consume a CUE file that references a nested
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# identifier (foo.bar), because this stupid logic can't disambiguate between
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# those and referencing a label from an import.
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#
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# HACK-IMPOSED CONSTRAINT: We can't experiment with the sort of complex
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# structures necessary for revisioning as long as we're doing this, as they're
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# necessarily going to involve some nesting.
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#
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# TODO move into grafana-cli and do a more careful check that we're only
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# eliminating qualified identifiers from imports we're also eliminating
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sed -i -e "s/[A-Za-z]*\.\([A-Za-z]*\)/\1/g" {cue/ui/gen.cue,cue/data/gen.cue}
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# uuuugghhhh OSX sed
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rm -f {cue/ui/gen.cue-e,cue/data/gen.cue-e}
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# Check that our output is still valid CUE.
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cue eval -E {cue/ui/gen.cue,cue/data/gen.cue} > /dev/null
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# Run cuetsy over all core .cue files.
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find packages -type f -name '*.cue' -exec cuetsy {} \;
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find public/app/plugins -type f -name '*.cue' -exec cuetsy {} \;
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