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policy: calculate changed based on policy and filter

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v1 is a bit simpler than v2, it does not pre calculate the auto approver map
and we cannot tell if it is changed.

Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
This commit is contained in:
Kristoffer Dalby 2025-03-31 08:32:44 +02:00
parent e02987cfef
commit 414fea91f0
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1 changed files with 8 additions and 4 deletions
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12
hscontrol/policy/v1/policy.go
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@ -53,14 +53,15 @@ func NewPolicyManager(polB []byte, users []types.User, nodes types.Nodes) (*Poli
} }
type PolicyManager struct { type PolicyManager struct {
mu sync.Mutex mu sync.Mutex
pol *ACLPolicy pol *ACLPolicy
polHash deephash.Sum
users []types.User users []types.User
nodes types.Nodes nodes types.Nodes
filterHash deephash.Sum
filter []tailcfg.FilterRule filter []tailcfg.FilterRule
filterHash deephash.Sum
} }
// updateLocked updates the filter rules based on the current policy and nodes. // updateLocked updates the filter rules based on the current policy and nodes.
@ -71,13 +72,16 @@ func (pm *PolicyManager) updateLocked() (bool, error) {
return false, fmt.Errorf("compiling filter rules: %w", err) return false, fmt.Errorf("compiling filter rules: %w", err)
} }
polHash := deephash.Hash(pm.pol)
filterHash := deephash.Hash(&filter) filterHash := deephash.Hash(&filter)
if filterHash == pm.filterHash {
if polHash == pm.polHash && filterHash == pm.filterHash {
return false, nil return false, nil
} }
pm.filter = filter pm.filter = filter
pm.filterHash = filterHash pm.filterHash = filterHash
pm.polHash = polHash
return true, nil return true, nil
} }