Swift Google Cloud Storage: List Objects in a Bucket

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Retrieves a list of objects in the Google Cloud Storage bucket. The name of the bucket is specified in the URL's path. This example retrieves a listing of the objects in the "chilkat-test" bucket.

Documentation: https://cloud.google.com/storage/docs/json_api/v1/objects/list

CURL Command

curl -X GET https://www.googleapis.com/storage/v1/b/chilkat-bucket/o?project=MY_CLOUD_STORAGE_PROJECT \
    --header "Authorization: Bearer CLOUD_STORAGE_TOKEN"

Swift Example


func chilkatTest() {
    let rest = CkoRest()
    var success: Bool

    //  URL: https://www.googleapis.com/storage/v1/b/chilkat-bucket/o?project=MY_CLOUD_STORAGE_PROJECT
    var bTls: Bool = true
    var port: Int = 443
    var bAutoReconnect: Bool = true
    success = rest.Connect("www.googleapis.com", port: port, tls: bTls, autoReconnect: bAutoReconnect)
    if success != true {
        print("ConnectFailReason: \(rest.ConnectFailReason.intValue)")
        print("\(rest.LastErrorText)")
        return
    }

    rest.AddHeader("Authorization", value: "Bearer CLOUD_STORAGE_TOKEN")

    let sbResponseBody = CkoStringBuilder()
    success = rest.FullRequestNoBodySb("GET", uriPath: "/storage/v1/b/chilkat-bucket/o?project=MY_CLOUD_STORAGE_PROJECT", sb: sbResponseBody)
    if success != true {
        print("\(rest.LastErrorText)")
        return
    }

    var respStatusCode: Int = rest.ResponseStatusCode.intValue
    if respStatusCode >= 400 {
        print("Response Status Code = \(respStatusCode)")
        print("Response Header:")
        print("\(rest.ResponseHeader)")
        print("Response Body:")
        print("\(sbResponseBody.GetAsString())")
        return
    }

    let jsonResponse = CkoJsonObject()
    jsonResponse.LoadSb(sbResponseBody)

    //  See the Online Tool for Generating JSON Parse Code
    var i: Int
    var count_i: Int

    var kind: String? = jsonResponse.StringOf("kind")
    i = 0
    count_i = jsonResponse.SizeOfArray("items").intValue
    while i < count_i {
        jsonResponse.I = i
        kind = jsonResponse.StringOf("items[i].kind")
        var id: String? = jsonResponse.StringOf("items[i].id")
        var selfLink: String? = jsonResponse.StringOf("items[i].selfLink")
        var name: String? = jsonResponse.StringOf("items[i].name")
        var bucket: String? = jsonResponse.StringOf("items[i].bucket")
        var generation: String? = jsonResponse.StringOf("items[i].generation")
        var metageneration: String? = jsonResponse.StringOf("items[i].metageneration")
        var contentType: String? = jsonResponse.StringOf("items[i].contentType")
        var timeCreated: String? = jsonResponse.StringOf("items[i].timeCreated")
        var updated: String? = jsonResponse.StringOf("items[i].updated")
        var storageClass: String? = jsonResponse.StringOf("items[i].storageClass")
        var timeStorageClassUpdated: String? = jsonResponse.StringOf("items[i].timeStorageClassUpdated")
        var size: String? = jsonResponse.StringOf("items[i].size")
        var md5Hash: String? = jsonResponse.StringOf("items[i].md5Hash")
        var mediaLink: String? = jsonResponse.StringOf("items[i].mediaLink")
        var crc32c: String? = jsonResponse.StringOf("items[i].crc32c")
        var etag: String? = jsonResponse.StringOf("items[i].etag")
        i = i + 1
    }


}

Sample JSON Response Body

{
  "kind": "storage#objects",
  "items": [
    {
      "kind": "storage#object",
      "id": "chilkat-bucket/hedgehogs.jpg/1540253106638630",
      "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-bucket/o/hedgehogs.jpg",
      "name": "hedgehogs.jpg",
      "bucket": "chilkat-bucket",
      "generation": "1540253106638630",
      "metageneration": "1",
      "contentType": "image/jpeg",
      "timeCreated": "2018-10-23T00:05:06.638Z",
      "updated": "2018-10-23T00:05:06.638Z",
      "storageClass": "MULTI_REGIONAL",
      "timeStorageClassUpdated": "2018-10-23T00:05:06.638Z",
      "size": "48573",
      "md5Hash": "TE1U6fQlD6MOVGaQbwGinQ==",
      "mediaLink": "https://www.googleapis.com/download/storage/v1/b/chilkat-bucket/o/hedgehogs.jpg?generation=1540253106638630&alt=media",
      "crc32c": "1B2d6g==",
      "etag": "CKaepPqhm94CEAE="
    },
    {
      "kind": "storage#object",
      "id": "chilkat-bucket/penguins.jpg/1540253106941673",
      "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-bucket/o/penguins.jpg",
      "name": "penguins.jpg",
      "bucket": "chilkat-bucket",
      "generation": "1540253106941673",
      "metageneration": "1",
      "contentType": "image/jpeg",
      "timeCreated": "2018-10-23T00:05:06.941Z",
      "updated": "2018-10-23T00:05:06.941Z",
      "storageClass": "MULTI_REGIONAL",
      "timeStorageClassUpdated": "2018-10-23T00:05:06.941Z",
      "size": "777835",
      "md5Hash": "nTd7EM53jEk4s8fixjoimg==",
      "mediaLink": "https://www.googleapis.com/download/storage/v1/b/chilkat-bucket/o/penguins.jpg?generation=1540253106941673&alt=media",
      "crc32c": "ixxYVw==",
      "etag": "COndtvqhm94CEAE="
    },
    {
      "kind": "storage#object",
      "id": "chilkat-bucket/starfish.jpg/1540253106637454",
      "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-bucket/o/starfish.jpg",
      "name": "starfish.jpg",
      "bucket": "chilkat-bucket",
      "generation": "1540253106637454",
      "metageneration": "1",
      "contentType": "image/jpeg",
      "timeCreated": "2018-10-23T00:05:06.636Z",
      "updated": "2018-10-23T00:05:06.636Z",
      "storageClass": "MULTI_REGIONAL",
      "timeStorageClassUpdated": "2018-10-23T00:05:06.636Z",
      "size": "6229",
      "md5Hash": "LpxZ2/JmI2fcl9/dqF2gSA==",
      "mediaLink": "https://www.googleapis.com/download/storage/v1/b/chilkat-bucket/o/starfish.jpg?generation=1540253106637454&alt=media",
      "crc32c": "9RjgwQ==",
      "etag": "CI6VpPqhm94CEAE="
    }
  ]
}