(Go) Google Cloud Storage List Bucket Objects

See more Google Cloud Storage Examples

List the objects in a Google Cloud Storage bucket.

For more information, see https://cloud.google.com/storage/docs/json_api/v1/objects/list

Chilkat Go Downloads Go Package for Windows, MacOS, Linux, Alpine Linux, Solaris

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // This example uses a previously obtained access token having permission for the 
    // scope "https://www.googleapis.com/auth/cloud-platform"

    // In this example, Get Google Cloud Storage OAuth2 Access Token, 
    // the service account access token was saved to a text file.  This example fetches the access token from the file..
    sbToken := chilkat.NewStringBuilder()
    sbToken.LoadFile("qa_data/tokens/googleCloudStorageAccessToken.txt","utf-8")

    http := chilkat.NewHttp()
    http.SetAuthToken(sbToken.GetAsString())

    // For more info see Cloud Storage Documentation - Objects: list 
    // 
    success := http.SetUrlVar("bucket","chilkat-ocean")
    success = http.SetUrlVar("PROJECT_NAME","ChilkatCloud")

    resp := http.QuickGetObj("https://www.googleapis.com/storage/v1/b/{$bucket}/o?project={$ChilkatCloud}")
    if http.LastMethodSuccess() == false {
        fmt.Println(http.LastErrorText())
        sbToken.DisposeStringBuilder()
        http.DisposeHttp()
        return
    }

    responseCode := resp.StatusCode()
    if responseCode == 401 {
        fmt.Println(resp.BodyStr())
        fmt.Println("If invalid credentials, then it is likely the access token expired.")
        fmt.Println("Your app should automatically fetch a new access token and re-try.")
        resp.DisposeHttpResponse()
        sbToken.DisposeStringBuilder()
        http.DisposeHttp()
        return
    }

    fmt.Println("Response code: ", responseCode)
    fmt.Println("Response body")

    json := chilkat.NewJsonObject()
    success = json.Load(resp.BodyStr())
    resp.DisposeHttpResponse()

    json.SetEmitCompact(false)

    fmt.Println(*json.Emit())

    // A response code = 200 indicates success, and the response body contains JSON such as this:

    // {
    //   "kind": "storage#objects",
    //   "items": [
    //     {
    //       "kind": "storage#object",
    //       "id": "chilkat-ocean/file with space char.jpg/1555776690752366",
    //       "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-ocean/o/file%20with%20space%20char.jpg",
    //       "mediaLink": "https://www.googleapis.com/download/storage/v1/b/chilkat-ocean/o/file%20with%20space%20char.jpg?generation=1555776690752366&alt=media",
    //       "name": "file with space char.jpg",
    //       "bucket": "chilkat-ocean",
    //       "generation": "1555776690752366",
    //       "metageneration": "1",
    //       "contentType": "image/jpeg",
    //       "storageClass": "MULTI_REGIONAL",
    //       "size": "6229",
    //       "md5Hash": "LpxZ2/JmI2fcl9/dqF2gSA==",
    //       "crc32c": "9RjgwQ==",
    //       "etag": "CO6WguiH3+ECEAE=",
    //       "timeCreated": "2019-04-20T16:11:30.752Z",
    //       "updated": "2019-04-20T16:11:30.752Z",
    //       "timeStorageClassUpdated": "2019-04-20T16:11:30.752Z"
    //     },
    //     {
    //       "kind": "storage#object",
    // 
    //       "id": "chilkat-ocean/penguins.jpg/1555775749593296",
    //       "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-ocean/o/penguins.jpg",
    //       "mediaLink": "https://www.googleapis.com/download/storage/v1/b/chilkat-ocean/o/penguins.jpg?generation=1555775749593296&alt=media",
    //       "name": "penguins.jpg",
    //       "bucket": "chilkat-ocean",
    //       "generation": "1555775749593296",
    //       "metageneration": "1",
    //       "contentType": "image/jpeg",
    //       "storageClass": "MULTI_REGIONAL",
    //       "size": "777835",
    //       "md5Hash": "nTd7EM53jEk4s8fixjoimg==",
    //       "crc32c": "ixxYVw==",
    //       "etag": "CNCxnqeE3+ECEAE=",
    //       "timeCreated": "2019-04-20T15:55:49.593Z",
    //       "updated": "2019-04-20T15:55:49.593Z",
    //       "timeStorageClassUpdated": "2019-04-20T15:55:49.593Z"
    //     },
    //     {
    //       "kind": "storage#object",
    //       "id": "chilkat-ocean/starfish.jpg/1628958192639968",
    //       "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-ocean/o/starfish.jpg",
    //       "mediaLink": "https://www.googleapis.com/download/storage/v1/b/chilkat-ocean/o/starfish.jpg?generation=1628958192639968&alt=media",
    //       "name": "starfish.jpg",
    //       "bucket": "chilkat-ocean",
    //       "generation": "1628958192639968",
    //       "metageneration": "1",
    //       "contentType": "image/jpeg",
    //       "storageClass": "MULTI_REGIONAL",
    //       "size": "6229",
    //       "md5Hash": "LpxZ2/JmI2fcl9/dqF2gSA==",
    //       "crc32c": "9RjgwQ==",
    //       "etag": "COC/tJP2sPICEAE=",
    //       "timeCreated": "2021-08-14T16:23:12.660Z",
    //       "updated": "2021-08-14T16:23:12.660Z",
    //       "timeStorageClassUpdated": "2021-08-14T16:23:12.660Z"
    //     }
    //   ]
    // }

    // Use this online tool to generate parsing code from sample JSON: 
    // Generate Parsing Code from JSON

    var id *string = new(string)
    var selfLink *string = new(string)
    var mediaLink *string = new(string)
    var name *string = new(string)
    var bucket *string = new(string)
    var generation *string = new(string)
meta    var generation *string = new(string)
    var contentType *string = new(string)
    var storageClass *string = new(string)
    var size *string = new(string)
    var md5Hash *string = new(string)
    var crc32c *string = new(string)
    var etag *string = new(string)
    var timeCreated *string = new(string)
    var updated *string = new(string)
    var timeStorageClassUpdated *string = new(string)

    kind := json.StringOf("kind")
    i := 0
    count_i := json.SizeOfArray("items")
    for i < count_i {
        json.SetI(i)
        kind = json.StringOf("items[i].kind")
        id = json.StringOf("items[i].id")
        selfLink = json.StringOf("items[i].selfLink")
        mediaLink = json.StringOf("items[i].mediaLink")
        name = json.StringOf("items[i].name")
        bucket = json.StringOf("items[i].bucket")
        generation = json.StringOf("items[i].generation")
        metageneration = json.StringOf("items[i].metageneration")
        contentType = json.StringOf("items[i].contentType")
        storageClass = json.StringOf("items[i].storageClass")
        size = json.StringOf("items[i].size")
        md5Hash = json.StringOf("items[i].md5Hash")
        crc32c = json.StringOf("items[i].crc32c")
        etag = json.StringOf("items[i].etag")
        timeCreated = json.StringOf("items[i].timeCreated")
        updated = json.StringOf("items[i].updated")
        timeStorageClassUpdated = json.StringOf("items[i].timeStorageClassUpdated")
        i = i + 1
    }


    sbToken.DisposeStringBuilder()
    http.DisposeHttp()
    json.DisposeJsonObject()