Carlos Florêncio
69 lines
2.1 KiB
Go
69 lines
2.1 KiB
Go
package agents
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import (
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"crypto/sha512"
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"encoding/hex"
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)
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// ManagedNPMRuntimeSpec defines a built-in npm-distributed ACP runtime.
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// Package and ACPArgs must come from trusted agent metadata, never request
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// input, because update jobs execute them directly.
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type ManagedNPMRuntimeSpec struct {
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Package string
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ACPArgs []string
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}
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// PackageSpec returns the trusted package name or exact package@version spec.
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func (s ManagedNPMRuntimeSpec) PackageSpec(version string) string {
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if version == "" {
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return s.Package
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}
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return s.Package + "@" + version
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}
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// ExecutionCacheKey returns npm's deterministic _npx execution-tree key for
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// this trusted package spec. npm derives it from the full package string using
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// SHA-512 and the first 16 lowercase hexadecimal characters. The optional
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// argument preserves the unversioned legacy key when omitted.
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func (s ManagedNPMRuntimeSpec) ExecutionCacheKey(versions ...string) string {
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digest := sha512.Sum512([]byte(s.PackageSpec(firstVersion(versions))))
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return hex.EncodeToString(digest[:])[:16]
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}
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// ACPCommand returns the normal launch command for the exact version when one
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// is supplied. An empty version keeps the legacy unversioned behavior.
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func (s ManagedNPMRuntimeSpec) ACPCommand(version string) Command {
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args := []string{"npx", "--yes", "--prefer-offline", s.PackageSpec(version)}
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args = append(args, s.ACPArgs...)
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return NewCommand(args...)
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}
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// CachedACPCommand returns the legacy unversioned launch command.
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func (s ManagedNPMRuntimeSpec) CachedACPCommand() Command {
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return s.ACPCommand("")
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}
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// CacheUpdateCommand returns the explicit cache preparation command. The
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// optional version makes npm prepare one deterministic package@version tree.
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func (s ManagedNPMRuntimeSpec) CacheUpdateCommand(versions ...string) Command {
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packageSpec := s.PackageSpec(firstVersion(versions))
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return NewCommand(
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"npm",
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"exec",
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"--yes",
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"--prefer-online",
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"--package="+packageSpec,
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"--",
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"node",
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"-e",
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"",
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)
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}
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func firstVersion(versions []string) string {
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if len(versions) == 0 {
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return ""
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}
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return versions[0]
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}
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