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| 1 | +package rawdb |
| 2 | + |
| 3 | +import ( |
| 4 | + "bytes" |
| 5 | + "github.com/aliyun/aliyun-oss-go-sdk/oss" |
| 6 | + "github.com/everFinance/arseeding/schema" |
| 7 | + "io" |
| 8 | +) |
| 9 | + |
| 10 | +// refer https://help.aliyun.com/document_detail/32157.html?spm=a2c4g.11186623.0.0.1a4b32bcxaC4kR |
| 11 | +const ( |
| 12 | + ossErrorNoSuchKey = "NoSuchKey" |
| 13 | +) |
| 14 | + |
| 15 | +type AliyunDB struct { |
| 16 | + bucketPrefix string |
| 17 | + client *oss.Client |
| 18 | +} |
| 19 | + |
| 20 | +func NewAliyunDB(endpoint, accKey, accessKeySecret, bktPrefix string) (*AliyunDB, error) { |
| 21 | + client, err := oss.New(endpoint, accKey, accessKeySecret) |
| 22 | + if err != nil { |
| 23 | + return nil, err |
| 24 | + } |
| 25 | + |
| 26 | + err = createAliyunBucket(client, bktPrefix) |
| 27 | + if err != nil { |
| 28 | + return nil, err |
| 29 | + } |
| 30 | + |
| 31 | + log.Info("run with aliyun oss success") |
| 32 | + |
| 33 | + return &AliyunDB{ |
| 34 | + bucketPrefix: bktPrefix, |
| 35 | + client: client, |
| 36 | + }, nil |
| 37 | +} |
| 38 | + |
| 39 | +func (a *AliyunDB) Put(bucket, key string, value []byte) (err error) { |
| 40 | + bkt, err := a.client.Bucket(getS3Bucket(a.bucketPrefix, bucket)) |
| 41 | + if err != nil { |
| 42 | + return err |
| 43 | + } |
| 44 | + |
| 45 | + return bkt.PutObject(key, bytes.NewReader(value)) |
| 46 | +} |
| 47 | + |
| 48 | +func (a *AliyunDB) Get(bucket, key string) (data []byte, err error) { |
| 49 | + bkt, err := a.client.Bucket(getS3Bucket(a.bucketPrefix, bucket)) |
| 50 | + if err != nil { |
| 51 | + return |
| 52 | + } |
| 53 | + |
| 54 | + body, err := bkt.GetObject(key) |
| 55 | + if err != nil { |
| 56 | + // handleOSSErr make file non-existent errors converted to schema.ErrNotFound |
| 57 | + return nil, handleOSSErr(err) |
| 58 | + } |
| 59 | + |
| 60 | + defer func(body io.ReadCloser) { |
| 61 | + _ = body.Close() |
| 62 | + }(body) |
| 63 | + |
| 64 | + data, err = io.ReadAll(body) |
| 65 | + return |
| 66 | +} |
| 67 | + |
| 68 | +func (a *AliyunDB) GetAllKey(bucket string) (keys []string, err error) { |
| 69 | + bkt, err := a.client.Bucket(getS3Bucket(a.bucketPrefix, bucket)) |
| 70 | + if err != nil { |
| 71 | + return |
| 72 | + } |
| 73 | + |
| 74 | + keys = make([]string, 0) |
| 75 | + |
| 76 | + startAfter := "" |
| 77 | + continueToken := "" |
| 78 | + var lsRes oss.ListObjectsResultV2 |
| 79 | + |
| 80 | + for { |
| 81 | + lsRes, err = bkt.ListObjectsV2(oss.StartAfter(startAfter), oss.ContinuationToken(continueToken)) |
| 82 | + if err != nil { |
| 83 | + break |
| 84 | + } |
| 85 | + for _, object := range lsRes.Objects { |
| 86 | + keys = append(keys, object.Key) |
| 87 | + } |
| 88 | + if lsRes.IsTruncated { |
| 89 | + startAfter = lsRes.StartAfter |
| 90 | + continueToken = lsRes.NextContinuationToken |
| 91 | + } else { |
| 92 | + break |
| 93 | + } |
| 94 | + } |
| 95 | + |
| 96 | + if len(keys) == 0 { |
| 97 | + err = schema.ErrNotExist |
| 98 | + } |
| 99 | + |
| 100 | + return |
| 101 | +} |
| 102 | + |
| 103 | +func (a *AliyunDB) Delete(bucket, key string) (err error) { |
| 104 | + bkt, err := a.client.Bucket(getS3Bucket(a.bucketPrefix, bucket)) |
| 105 | + if err != nil { |
| 106 | + return |
| 107 | + } |
| 108 | + |
| 109 | + return bkt.DeleteObject(key) |
| 110 | +} |
| 111 | + |
| 112 | +func (a *AliyunDB) Close() (err error) { |
| 113 | + return |
| 114 | +} |
| 115 | + |
| 116 | +func createAliyunBucket(svc *oss.Client, prefix string) error { |
| 117 | + bucketNames := []string{ |
| 118 | + schema.ChunkBucket, |
| 119 | + schema.TxDataEndOffSetBucket, |
| 120 | + schema.TxMetaBucket, |
| 121 | + schema.ConstantsBucket, |
| 122 | + schema.TaskIdPendingPoolBucket, |
| 123 | + schema.TaskBucket, |
| 124 | + schema.BundleItemBinary, |
| 125 | + schema.BundleItemMeta, |
| 126 | + schema.BundleWaitParseArIdBucket, |
| 127 | + schema.BundleArIdToItemIdsBucket, |
| 128 | + } |
| 129 | + |
| 130 | + ownBuckets, err := getBucketWithPrefix(svc, prefix) |
| 131 | + if err != nil { |
| 132 | + return err |
| 133 | + } |
| 134 | + |
| 135 | + for _, bucketName := range bucketNames { |
| 136 | + s3Bkt := getS3Bucket(prefix, bucketName) // s3 bucket name only accept lower case |
| 137 | + if !ownBuckets[s3Bkt] { |
| 138 | + err := svc.CreateBucket(s3Bkt) |
| 139 | + if err != nil { |
| 140 | + return err |
| 141 | + } |
| 142 | + } |
| 143 | + } |
| 144 | + return nil |
| 145 | +} |
| 146 | + |
| 147 | +func getBucketWithPrefix(svc *oss.Client, prefix string) (map[string]bool, error) { |
| 148 | + res := make(map[string]bool) |
| 149 | + |
| 150 | + lsRes, err := svc.ListBuckets(oss.Prefix(prefix)) |
| 151 | + if err != nil { |
| 152 | + return nil, err |
| 153 | + } |
| 154 | + |
| 155 | + for _, bucket := range lsRes.Buckets { |
| 156 | + res[bucket.Name] = true |
| 157 | + } |
| 158 | + |
| 159 | + return res, nil |
| 160 | +} |
| 161 | + |
| 162 | +func handleOSSErr(ossErr error) (err error) { |
| 163 | + switch ossErr.(type) { |
| 164 | + case oss.ServiceError: |
| 165 | + if ossErr.(oss.ServiceError).Code == ossErrorNoSuchKey { |
| 166 | + err = schema.ErrNotExist |
| 167 | + } |
| 168 | + default: |
| 169 | + err = ossErr |
| 170 | + } |
| 171 | + |
| 172 | + return |
| 173 | +} |
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