Carlos Florêncio
49 lines
1.5 KiB
Go
49 lines
1.5 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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// 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.
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func (s ManagedNPMRuntimeSpec) ExecutionCacheKey() string {
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digest := sha512.Sum512([]byte(s.Package))
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return hex.EncodeToString(digest[:])[:16]
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}
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// CachedACPCommand returns the normal launch command. The package is
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// intentionally unversioned and prefer-offline lets npm reuse a suitable
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// execution-cache entry while still fetching when the cache is empty.
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func (s ManagedNPMRuntimeSpec) CachedACPCommand() Command {
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args := []string{"npx", "--yes", "--prefer-offline", s.Package}
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args = append(args, s.ACPArgs...)
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return NewCommand(args...)
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}
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// CacheUpdateCommand returns the explicit cache-refresh command. npm exec
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// installs the built-in unversioned package with online freshness before
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// running a no-op under the prepared execution environment.
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func (s ManagedNPMRuntimeSpec) CacheUpdateCommand() Command {
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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="+s.Package,
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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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