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Original file line number | Diff line number | Diff line change |
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package s2i | ||
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import ( | ||
"fmt" | ||
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fn "knative.dev/func/pkg/functions" | ||
) | ||
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// GoAssembler | ||
// | ||
// Adapted from /usr/libexec/s2i/assemble within the UBI-8 go-toolchain | ||
// such that the "go build" command builds subdirectory .s2i/builds/last | ||
// (where main resides) rather than the root. | ||
// TODO: many apps use the pattern of having main in a subdirectory, for | ||
// example the idiomatic "./cmd/myapp/main.go". It would therefore be | ||
// beneficial to submit a patch to the go-toolchain source allowing this | ||
// path to be customized with an environment variable instead | ||
const GoAssembler = ` | ||
#!/bin/bash | ||
set -e | ||
pushd /tmp/src | ||
if [[ $(go list -f {{.Incomplete}}) == "true" ]]; then | ||
INSTALL_URL=${INSTALL_URL:-$IMPORT_URL} | ||
if [[ ! -z "$IMPORT_URL" ]]; then | ||
popd | ||
echo "Assembling GOPATH" | ||
export GOPATH=$(realpath $HOME/go) | ||
mkdir -p $GOPATH/src/$IMPORT_URL | ||
mv /tmp/src/* $GOPATH/src/$IMPORT_URL | ||
if [[ -d /tmp/artifacts/pkg ]]; then | ||
echo "Restoring previous build artifacts" | ||
mv /tmp/artifacts/pkg $GOPATH | ||
fi | ||
# Resolve dependencies, ignore if vendor present | ||
if [[ ! -d $GOPATH/src/$INSTALL_URL/vendor ]]; then | ||
echo "Resolving dependencies" | ||
pushd $GOPATH/src/$INSTALL_URL | ||
go get | ||
popd | ||
fi | ||
# lets build | ||
pushd $GOPATH/src/$INSTALL_URL | ||
echo "Building" | ||
go install -i $INSTALL_URL | ||
mv $GOPATH/bin/* /opt/app-root/gobinary | ||
popd | ||
exit | ||
fi | ||
exec /$STI_SCRIPTS_PATH/usage | ||
else | ||
pushd .s2i/builds/last | ||
go get f | ||
go build -o /opt/app-root/gobinary | ||
popd | ||
popd | ||
fi | ||
` | ||
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func assembler(f fn.Function) (string, error) { | ||
switch f.Runtime { | ||
case "go": | ||
return GoAssembler, nil | ||
default: | ||
return "", fmt.Errorf("no assembler defined for runtime %q", f.Runtime) | ||
} | ||
} |
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