File
Blob: src/workerd/io/features.capnp
| 1 | # Copyright (c) 2017-2022 Cloudflare, Inc. |
| 2 | # Licensed under the Apache 2.0 license found in the LICENSE file or at: |
| 3 | # https://opensource.org/licenses/Apache-2.0 |
| 4 | |
| 5 | @0x8b3d4aaa36221ec9; |
| 6 | |
| 7 | using Cxx = import "/capnp/c++.capnp"; |
| 8 | $Cxx.namespace("workerd"); |
| 9 | $Cxx.allowCancellation; |
| 10 | |
| 11 | enum Features { |
| 12 | test @0; |
| 13 | # A test feature that should never be used in production code. |
| 14 | |
| 15 | # Due to a number of practical limitations on the metrics collection, |
| 16 | # we do not really want the list of features to grow unbounded over |
| 17 | # time. At any given point in time we shouldn't be trying to track |
| 18 | # more than 50 features at a time. |
| 19 | # |
| 20 | # Features we are no longer needing to track can and should be removed, |
| 21 | # just be careful to adjust the index ordinals of the remaining features |
| 22 | # correctly. In code, be sure to never rely on the ordinal value and |
| 23 | # instead always use the features enum to ensure that things won't break. |
| 24 | |
| 25 | # We want to determine how users typically read the data from a Blob. |
| 26 | # The reason is so that we can determine how best to optimize the Blob |
| 27 | # implementation. |
| 28 | blobAsArrayBuffer @1; |
| 29 | blobAsText @2; |
| 30 | blobAsStream @3; |
| 31 | blobGetData @4; |
| 32 | } |