This repository was archived by the owner on Apr 8, 2025. It is now read-only.
This repository was archived by the owner on Apr 8, 2025. It is now read-only.
download_to_stream() gives code "NotFoundError" even though blob exists #408
Description
Using azure-storage-cpp (probably v7.4) on Linux, I am trying to download a binary file into a std::vector<uint8_t>. The file exists under the container "testcontainer". Why does the function download_to_stream() fails with error code "NotFoundError"?
Here's my code and the output below:
Code:
const utility::string_t storage_connection_string(U("DefaultEndpointsProtocol=https;AccountName=<my_account>;AccountKey=<my_key>"));
azure::storage::cloud_storage_account storage_account = azure::storage::cloud_storage_account::parse(storage_connection_string);
azure::storage::cloud_blob_client blob_client = storage_account.create_cloud_blob_client();
azure::storage::cloud_blob_container container = blob_client.get_container_reference(_XPLATSTR("testcontainer"));
sout << "Container name? " << container.name() << "\n";
sout << "Container successfully created? " << container.create_if_not_exists() << "\n";
azure::storage::continuation_token token;
do {
azure::storage::list_blob_item_segment result = container.list_blobs_segmented(token);
for (auto& item : result.results()){
if (item.is_blob()){
sout << "Blob: " << item.as_blob().uri().primary_uri().to_string() << "\n";
sout << "Blob name: " << item.as_blob().name() << "\n";
sout << "Blob uri path: " << item.as_blob().uri().path() << "\n";
sout << "Blob content type: " << item.as_blob().properties().content_type() << "\n";
auto binary_blob = container.get_block_blob_reference(item.as_blob().name());
concurrency::streams::container_buffer<std::vector<uint8_t>> buffer;
concurrency::streams::ostream output(buffer);
binary_blob.download_to_stream(output);
sout << "Stream: " << utility::string_t(buffer.collection().begin(), buffer.collection().end()) << "\n";
}
else {
sout << "Directory: " << item.as_blob().uri().primary_uri().to_string() << "\n";
}
}
token = result.continuation_token();
} while (!token.empty());
Output:
Container name? testcontainer
Container successfully created? 0
Blob: https://<my_account>.blob.core.windows.net/testcontainer/0b8ba7c0ef5e37733617c1a95b866aa378b102fdc34e23cc523ca8a5d3acf7f4
Blob name: 0b8ba7c0ef5e37733617c1a95b866aa378b102fdc34e23cc523ca8a5d3acf7f4
Blob uri path: /testcontainer/0b8ba7c0ef5e37733617c1a95b866aa378b102fdc34e23cc523ca8a5d3acf7f4
Blob content type: application/octet-stream
Stream: {
"error": {
"message": "File \"0b8ba7c0ef5e37733617c1a95b866aa378b102fdc34e23cc523ca8a5d3acf7f4\" not found",
"code": "NotFoundError"
}
}