28 lines
972 B
Go
28 lines
972 B
Go
package provider
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import "github.com/containous/traefik/pkg/types"
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// Constrainer Filter services by constraint, matching with Traefik tags.
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type Constrainer struct {
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Constraints types.Constraints `description:"Filter services by constraint, matching with Traefik tags." export:"true"`
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}
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// MatchConstraints must match with EVERY single constraint
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// returns first constraint that do not match or nil.
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func (c *Constrainer) MatchConstraints(tags []string) (bool, *types.Constraint) {
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// if there is no tags and no constraints, filtering is disabled
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if len(tags) == 0 && len(c.Constraints) == 0 {
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return true, nil
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}
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for _, constraint := range c.Constraints {
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// xor: if ok and constraint.MustMatch are equal, then no tag is currently matching with the constraint
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if ok := constraint.MatchConstraintWithAtLeastOneTag(tags); ok != constraint.MustMatch {
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return false, constraint
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}
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}
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// If no constraint or every constraints matching
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return true, nil
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}
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