diff options
author | Rasmus Dahlberg <rasmus.dahlberg@kau.se> | 2021-02-23 11:59:46 +0100 |
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committer | Rasmus Dahlberg <rasmus.dahlberg@kau.se> | 2021-02-23 11:59:46 +0100 |
commit | b4dd74a3f36ca46b7bcda69e8d95949babfeb76d (patch) | |
tree | 6f3cbe32be4e675ba385e2575e28cf7a0f4dca00 /types/namespace_pool.go | |
parent | 1505c6db8e0e66d88a645ac5cc36647a6f8b2f43 (diff) |
renamed and reordered to improve readability
Diffstat (limited to 'types/namespace_pool.go')
-rw-r--r-- | types/namespace_pool.go | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/types/namespace_pool.go b/types/namespace_pool.go new file mode 100644 index 0000000..0f30567 --- /dev/null +++ b/types/namespace_pool.go @@ -0,0 +1,61 @@ +package types + +import ( + "fmt" +) + +// NamespacePool is a pool of namespaces that contain complete verification keys +type NamespacePool struct { + pool map[string]*Namespace + list []*Namespace + // If we need to update this structure without a restart => add mutex. +} + +// NewNameSpacePool creates a new namespace pool from a list of namespaces. An +// error is returned if there are duplicate namespaces or namespaces without a +// complete verification key. The latter is determined by namespaceWithKey(). +func NewNamespacePool(namespaces []*Namespace) (*NamespacePool, error) { + np := &NamespacePool{ + pool: make(map[string]*Namespace), + list: make([]*Namespace, 0), + } + for _, namespace := range namespaces { + if !namespaceWithKey(namespace.Format) { + return nil, fmt.Errorf("need verification key in namespace pool: %v", namespace.Format) + } + if _, ok := np.pool[namespace.String()]; ok { + return nil, fmt.Errorf("duplicate namespace: %v", namespace.String()) + } + np.pool[namespace.String()] = namespace + np.list = append(np.list, namespace) + } + return np, nil +} + +// Find checks if namespace is a member of the namespace pool. +func (np *NamespacePool) Find(namespace *Namespace) (*Namespace, bool) { + if _, ok := np.pool[namespace.String()]; !ok { + return nil, false + } + // If the passed namespace is a key fingerprint the actual key needs to be + // attached before returning. Not applicable for Ed25519. Docdoc later. + return namespace, true +} + +// List returns a copied list of namespaces that is used by this pool. +func (np *NamespacePool) List() []*Namespace { + namespaces := make([]*Namespace, len(np.list)) + copy(namespaces, np.list) + return namespaces +} + +// namespaceWithKey returns true if a namespace format contains a complete +// verification key. I.e., some formats might have a key fingerprint instead. +func namespaceWithKey(format NamespaceFormat) bool { + switch format { + case NamespaceFormatEd25519V1: + return true + default: + return false + } +} |