| // Copyright 2020 The Pigweed Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| // use this file except in compliance with the License. You may obtain a copy of |
| // the License at |
| // |
| // https://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| // License for the specific language governing permissions and limitations under |
| // the License. |
| |
| // This function serves as a backend for pw_tokenizer / pw_log_tokenized that |
| // encodes tokenized logs as Base64 and writes them using HDLC. |
| |
| #include "pw_hdlc/encoder.h" |
| #include "pw_log_tokenized/base64.h" |
| #include "pw_log_tokenized/handler.h" |
| #include "pw_span/span.h" |
| #include "pw_stream/sys_io_stream.h" |
| #include "pw_string/string.h" |
| #include "pw_tokenizer/base64.h" |
| |
| namespace pw::log_tokenized { |
| namespace { |
| |
| inline constexpr int kBase64LogHdlcAddress = 1; |
| |
| stream::SysIoWriter writer; |
| |
| } // namespace |
| |
| // Base64-encodes tokenized logs and writes them to pw::sys_io as HDLC frames. |
| extern "C" void pw_log_tokenized_HandleLog( |
| uint32_t, // TODO(hepler): Use the metadata for filtering. |
| const uint8_t log_buffer[], |
| size_t size_bytes) { |
| // Encode the tokenized message as Base64. |
| const pw::InlineBasicString base64_string = |
| PrefixedBase64Encode(log_buffer, size_bytes); |
| |
| // HDLC-encode the Base64 string via a SysIoWriter. Ignore errors since we |
| // cannot take any action anyway. |
| hdlc::WriteUIFrame( |
| kBase64LogHdlcAddress, as_bytes(span(base64_string)), writer) |
| .IgnoreError(); |
| } |
| |
| } // namespace pw::log_tokenized |
