C# Google Cloud Storage: List Objects in a Bucket

Back to Index

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"

C# Example

Chilkat.Rest rest = new Chilkat.Rest();
bool success;

//  URL: https://www.googleapis.com/storage/v1/b/chilkat-bucket/o?project=MY_CLOUD_STORAGE_PROJECT
bool bTls = true;
int port = 443;
bool bAutoReconnect = true;
success = rest.Connect("www.googleapis.com",port,bTls,bAutoReconnect);
if (success != true) {
    Debug.WriteLine("ConnectFailReason: " + Convert.ToString(rest.ConnectFailReason));
    Debug.WriteLine(rest.LastErrorText);
    return;
}

rest.AddHeader("Authorization","Bearer CLOUD_STORAGE_TOKEN");

Chilkat.StringBuilder sbResponseBody = new Chilkat.StringBuilder();
success = rest.FullRequestNoBodySb("GET","/storage/v1/b/chilkat-bucket/o?project=MY_CLOUD_STORAGE_PROJECT",sbResponseBody);
if (success != true) {
    Debug.WriteLine(rest.LastErrorText);
    return;
}

int respStatusCode = rest.ResponseStatusCode;
if (respStatusCode >= 400) {
    Debug.WriteLine("Response Status Code = " + Convert.ToString(respStatusCode));
    Debug.WriteLine("Response Header:");
    Debug.WriteLine(rest.ResponseHeader);
    Debug.WriteLine("Response Body:");
    Debug.WriteLine(sbResponseBody.GetAsString());
    return;
}

Chilkat.JsonObject jsonResponse = new Chilkat.JsonObject();
jsonResponse.LoadSb(sbResponseBody);

//  See the Online Tool for Generating JSON Parse Code
int i;
int count_i;

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