Henry
e75c8b37c8
Co-authored-by: nova28 <17953305+nova28@users.noreply.github.com> Co-authored-by: Carlos Florencio <carlosmflorencio@gmail.com>
45 lines
2.1 KiB
Go
45 lines
2.1 KiB
Go
package lifecycle
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// InheritedRecordScope names what this launch found at the recorded control
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// endpoint. It governs only records this backend did NOT create during this
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// process lifetime -- the ones inherited from an earlier launch -- because a
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// record this backend created is judged against whichever server it is using,
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// adopted or freshly started.
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//
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// The distinction matters because a fresh server's enumeration is not
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// evidence about an instance it never launched. Judging an inherited record
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// against it would report a still-running agent as gone.
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type InheritedRecordScope int
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const (
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// InheritedRecordScopeNoServer is nothing answered at the recorded
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// endpoint, or no endpoint was recorded. No control server holds any
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// inherited instance, so the process-identifier probe applies and
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// genuinely dead records are still repaired. This is the zero value:
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// a launch that never attempted adoption is in exactly this position.
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InheritedRecordScopeNoServer InheritedRecordScope = iota
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// InheritedRecordScopeForeignServer is a server answered at the recorded
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// endpoint and was left running, which is every path where adoption did
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// not complete against a reachable server. A surviving instance runs on
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// a server this backend does not drive, so its absence from the one this
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// backend does drive proves nothing and every inherited record is
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// unknown. Classifying it dead here would repair or prune a record whose
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// agent is still running.
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InheritedRecordScopeForeignServer
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// InheritedRecordScopeAdopted is this backend adopted the recorded
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// server, so its enumeration is authoritative for inherited records.
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InheritedRecordScopeAdopted
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)
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// SetInheritedRecordScope installs what this launch found at the recorded
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// control endpoint, so liveness classification of records inherited from an
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// earlier launch can tell "no server holds these" from "a server this
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// backend does not drive might". Set once during startup wiring, before
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// Start runs; the zero value (no server) is correct for a launch that never
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// attempted adoption.
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func (m *Manager) SetInheritedRecordScope(scope InheritedRecordScope) {
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m.inheritedRecordScope = scope
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}
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