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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,134 @@ | ||
| package providers | ||
|
|
||
| import ( | ||
| "context" | ||
| "encoding/json" | ||
| "fmt" | ||
| "net/http" | ||
| "time" | ||
|
|
||
| t "github.com/darkweak/souin/configurationtypes" | ||
| clientv3 "go.etcd.io/etcd/client/v3" | ||
| ) | ||
|
|
||
| // Etcd provider type | ||
| type Etcd struct { | ||
| *clientv3.Client | ||
| stale time.Duration | ||
| ctx context.Context | ||
| } | ||
|
|
||
| // EtcdConnectionFactory function create new Nuts instance | ||
| func EtcdConnectionFactory(c t.AbstractConfigurationInterface) (*Etcd, error) { | ||
| dc := c.GetDefaultCache() | ||
| bc, _ := json.Marshal(dc.GetEtcd().Configuration) | ||
| etcdConfiguration := clientv3.Config{ | ||
| DialTimeout: 5 * time.Second, | ||
| AutoSyncInterval: 1 * time.Second, | ||
| Logger: c.GetLogger(), | ||
| } | ||
| _ = json.Unmarshal(bc, &etcdConfiguration) | ||
|
|
||
| fmt.Printf("%+v\n", etcdConfiguration) | ||
|
|
||
| cli, err := clientv3.New(etcdConfiguration) | ||
|
|
||
| if err != nil { | ||
| fmt.Println("Impossible to initialize the Etcd DB.", err) | ||
| return nil, err | ||
| } | ||
|
|
||
| return &Etcd{ | ||
| Client: cli, | ||
| ctx: context.Background(), | ||
| stale: dc.GetStale(), | ||
| }, nil | ||
| } | ||
|
|
||
| // ListKeys method returns the list of existing keys | ||
| func (provider *Etcd) ListKeys() []string { | ||
| keys := []string{} | ||
|
|
||
| r, e := provider.Client.Get(provider.ctx, "\x00", clientv3.WithFromKey()) | ||
|
|
||
| if e != nil { | ||
| return []string{} | ||
| } | ||
| for _, k := range r.Kvs { | ||
| keys = append(keys, string(k.Key)) | ||
| } | ||
|
|
||
| return keys | ||
| } | ||
|
|
||
| // Get method returns the populated response if exists, empty response then | ||
| func (provider *Etcd) Get(key string) (item []byte) { | ||
| r, e := provider.Client.Get(provider.ctx, key) | ||
|
|
||
| if e == nil && r != nil && len(r.Kvs) > 0 { | ||
| item = r.Kvs[0].Value | ||
| } | ||
|
|
||
| return | ||
| } | ||
|
|
||
| // Prefix method returns the populated response if exists, empty response then | ||
| func (provider *Etcd) Prefix(key string, req *http.Request) []byte { | ||
| r, e := provider.Client.Get(provider.ctx, key, clientv3.WithPrefix()) | ||
|
|
||
| if e == nil && r != nil { | ||
| for _, v := range r.Kvs { | ||
| if varyVoter(key, req, string(v.Key)) { | ||
| return v.Value | ||
| } | ||
| } | ||
| } | ||
|
|
||
| return []byte{} | ||
| } | ||
|
|
||
| // Set method will store the response in Etcd provider | ||
| func (provider *Etcd) Set(key string, value []byte, url t.URL, duration time.Duration) { | ||
| if duration == 0 { | ||
| duration = url.TTL.Duration | ||
| } | ||
|
|
||
| rs, _ := provider.Client.Grant(context.TODO(), int64(duration.Seconds())) | ||
| _, err := provider.Client.Put(provider.ctx, key, string(value), clientv3.WithLease(rs.ID)) | ||
|
|
||
| if err != nil { | ||
| panic(fmt.Sprintf("Impossible to set value into Etcd, %s", err)) | ||
| } | ||
|
|
||
| _, err = provider.Client.Put(provider.ctx, stalePrefix+key, string(value), clientv3.WithLease(rs.ID)) | ||
|
|
||
| if err != nil { | ||
| panic(fmt.Sprintf("Impossible to set value into Etcd, %s", err)) | ||
| } | ||
| } | ||
|
|
||
| // Delete method will delete the response in Etcd provider if exists corresponding to key param | ||
| func (provider *Etcd) Delete(key string) { | ||
| _, _ = provider.Client.Delete(provider.ctx, key) | ||
| } | ||
|
|
||
| // DeleteMany method will delete the responses in Nuts provider if exists corresponding to the regex key param | ||
| func (provider *Etcd) DeleteMany(key string) { | ||
| r, e := provider.Client.Get(provider.ctx, key, clientv3.WithPrefix()) | ||
|
|
||
| if e == nil && r != nil { | ||
| for _, v := range r.Kvs { | ||
| provider.Delete(string(v.Key)) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| // Init method will | ||
| func (provider *Etcd) Init() error { | ||
| return nil | ||
| } | ||
|
|
||
| // Reset method will reset or close provider | ||
| func (provider *Etcd) Reset() error { | ||
| return provider.Client.Close() | ||
| } |
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