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acl_cache.go
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acl_cache.go
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package structs
import (
"time"
lru "github.com/hashicorp/golang-lru"
"github.com/hashicorp/consul/acl"
)
type ACLCachesConfig struct {
Identities int
Policies int
ParsedPolicies int
Authorizers int
Roles int
}
type ACLCaches struct {
identities *lru.TwoQueueCache // identity id -> structs.ACLIdentity
parsedPolicies *lru.TwoQueueCache // policy content hash -> acl.Policy
policies *lru.TwoQueueCache // policy ID -> ACLPolicy
authorizers *lru.TwoQueueCache // token secret -> acl.Authorizer
roles *lru.TwoQueueCache // role ID -> ACLRole
}
type IdentityCacheEntry struct {
Identity ACLIdentity
CacheTime time.Time
}
func (e *IdentityCacheEntry) Age() time.Duration {
return time.Since(e.CacheTime)
}
type ParsedPolicyCacheEntry struct {
Policy *acl.Policy
CacheTime time.Time
}
func (e *ParsedPolicyCacheEntry) Age() time.Duration {
return time.Since(e.CacheTime)
}
type PolicyCacheEntry struct {
Policy *ACLPolicy
CacheTime time.Time
}
func (e *PolicyCacheEntry) Age() time.Duration {
return time.Since(e.CacheTime)
}
type AuthorizerCacheEntry struct {
Authorizer acl.Authorizer
CacheTime time.Time
TTL time.Duration
}
func (e *AuthorizerCacheEntry) Age() time.Duration {
return time.Since(e.CacheTime)
}
type RoleCacheEntry struct {
Role *ACLRole
CacheTime time.Time
}
func (e *RoleCacheEntry) Age() time.Duration {
return time.Since(e.CacheTime)
}
func NewACLCaches(config *ACLCachesConfig) (*ACLCaches, error) {
cache := &ACLCaches{}
if config != nil && config.Identities > 0 {
identCache, err := lru.New2Q(config.Identities)
if err != nil {
return nil, err
}
cache.identities = identCache
}
if config != nil && config.Policies > 0 {
policyCache, err := lru.New2Q(config.Policies)
if err != nil {
return nil, err
}
cache.policies = policyCache
}
if config != nil && config.ParsedPolicies > 0 {
parsedCache, err := lru.New2Q(config.ParsedPolicies)
if err != nil {
return nil, err
}
cache.parsedPolicies = parsedCache
}
if config != nil && config.Authorizers > 0 {
authCache, err := lru.New2Q(config.Authorizers)
if err != nil {
return nil, err
}
cache.authorizers = authCache
}
if config != nil && config.Roles > 0 {
roleCache, err := lru.New2Q(config.Roles)
if err != nil {
return nil, err
}
cache.roles = roleCache
}
return cache, nil
}
// GetIdentity fetches an identity from the cache and returns it
func (c *ACLCaches) GetIdentity(id string) *IdentityCacheEntry {
if c == nil || c.identities == nil {
return nil
}
if raw, ok := c.identities.Get(id); ok {
return raw.(*IdentityCacheEntry)
}
return nil
}
// GetIdentityWithSecretToken fetches the identity with the given secret token
// from the cache.
func (c *ACLCaches) GetIdentityWithSecretToken(secretToken string) *IdentityCacheEntry {
return c.GetIdentity(cacheIDSecretToken(secretToken))
}
// GetPolicy fetches a policy from the cache and returns it
func (c *ACLCaches) GetPolicy(policyID string) *PolicyCacheEntry {
if c == nil || c.policies == nil {
return nil
}
if raw, ok := c.policies.Get(policyID); ok {
return raw.(*PolicyCacheEntry)
}
return nil
}
// GetPolicy fetches a policy from the cache and returns it
func (c *ACLCaches) GetParsedPolicy(id string) *ParsedPolicyCacheEntry {
if c == nil || c.parsedPolicies == nil {
return nil
}
if raw, ok := c.parsedPolicies.Get(id); ok {
return raw.(*ParsedPolicyCacheEntry)
}
return nil
}
// GetAuthorizer fetches a acl from the cache and returns it
func (c *ACLCaches) GetAuthorizer(id string) *AuthorizerCacheEntry {
if c == nil || c.authorizers == nil {
return nil
}
if raw, ok := c.authorizers.Get(id); ok {
return raw.(*AuthorizerCacheEntry)
}
return nil
}
// GetRole fetches a role from the cache by id and returns it
func (c *ACLCaches) GetRole(roleID string) *RoleCacheEntry {
if c == nil || c.roles == nil {
return nil
}
if raw, ok := c.roles.Get(roleID); ok {
return raw.(*RoleCacheEntry)
}
return nil
}
// PutIdentity adds a new identity to the cache
func (c *ACLCaches) PutIdentity(id string, ident ACLIdentity) {
if c == nil || c.identities == nil {
return
}
c.identities.Add(id, &IdentityCacheEntry{Identity: ident, CacheTime: time.Now()})
}
// PutIdentityWithSecretToken adds a new identity to the cache, keyed by the
// given secret token (with a prefix to prevent collisions).
func (c *ACLCaches) PutIdentityWithSecretToken(secretToken string, identity ACLIdentity) {
c.PutIdentity(cacheIDSecretToken(secretToken), identity)
}
// RemoveIdentityWithSecretToken removes the identity from the cache with the
// given secret token.
func (c *ACLCaches) RemoveIdentityWithSecretToken(secretToken string) {
if c == nil || c.identities == nil {
return
}
c.identities.Remove(cacheIDSecretToken(secretToken))
}
func (c *ACLCaches) PutPolicy(policyId string, policy *ACLPolicy) {
if c == nil || c.policies == nil {
return
}
c.policies.Add(policyId, &PolicyCacheEntry{Policy: policy, CacheTime: time.Now()})
}
func (c *ACLCaches) PutParsedPolicy(id string, policy *acl.Policy) {
if c == nil || c.parsedPolicies == nil {
return
}
c.parsedPolicies.Add(id, &ParsedPolicyCacheEntry{Policy: policy, CacheTime: time.Now()})
}
func (c *ACLCaches) PutAuthorizer(id string, authorizer acl.Authorizer) {
if c == nil || c.authorizers == nil {
return
}
c.authorizers.Add(id, &AuthorizerCacheEntry{Authorizer: authorizer, CacheTime: time.Now()})
}
func (c *ACLCaches) PutRole(roleID string, role *ACLRole) {
if c == nil || c.roles == nil {
return
}
c.roles.Add(roleID, &RoleCacheEntry{Role: role, CacheTime: time.Now()})
}
func (c *ACLCaches) RemoveIdentity(id string) {
if c != nil && c.identities != nil {
c.identities.Remove(id)
}
}
func (c *ACLCaches) RemovePolicy(policyID string) {
if c != nil && c.policies != nil {
c.policies.Remove(policyID)
}
}
func (c *ACLCaches) RemoveRole(roleID string) {
if c != nil && c.roles != nil {
c.roles.Remove(roleID)
}
}
func (c *ACLCaches) Purge() {
if c != nil {
if c.identities != nil {
c.identities.Purge()
}
if c.policies != nil {
c.policies.Purge()
}
if c.parsedPolicies != nil {
c.parsedPolicies.Purge()
}
if c.authorizers != nil {
c.authorizers.Purge()
}
if c.roles != nil {
c.roles.Purge()
}
}
}
func cacheIDSecretToken(token string) string {
return "token-secret:" + token
}