| /** @file |
| |
| A brief file description |
| |
| @section license License |
| |
| Licensed to the Apache Software Foundation (ASF) under one |
| or more contributor license agreements. See the NOTICE file |
| distributed with this work for additional information |
| regarding copyright ownership. The ASF licenses this file |
| to you 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 |
| |
| http://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. |
| */ |
| |
| #pragma once |
| |
| #include "P_EventSystem.h" |
| #include "HTTP.h" |
| #include "InkAPIInternal.h" |
| |
| #define TRANSFORM_READ_READY (TRANSFORM_EVENTS_START + 0) |
| |
| typedef struct _RangeRecord { |
| _RangeRecord() {} |
| int64_t _start = -1; |
| int64_t _end = -1; |
| int64_t _done_byte = -1; |
| } RangeRecord; |
| |
| class TransformProcessor |
| { |
| public: |
| void start(); |
| |
| public: |
| VConnection *open(Continuation *cont, APIHook *hooks); |
| INKVConnInternal *null_transform(ProxyMutex *mutex); |
| INKVConnInternal *range_transform(ProxyMutex *mutex, RangeRecord *ranges, int, HTTPHdr *, const char *content_type, |
| int content_type_len, int64_t content_length); |
| }; |
| |
| #if TS_HAS_TESTS |
| class TransformTest |
| { |
| public: |
| static void run(); |
| }; |
| #endif |
| |
| /** A protocol class. |
| This provides transform VC specific methods for external access |
| without exposing internals or requiring extra includes. |
| */ |
| class TransformVCChain : public VConnection |
| { |
| protected: |
| /// Required constructor |
| TransformVCChain(ProxyMutex *m); |
| |
| public: |
| /** Compute the backlog. This is the amount of data ready to read |
| for each element of the chain. If @a limit is non-negative then |
| the method will return as soon as the computed backlog is at |
| least that large. This provides for more efficient checking if |
| the caller is interested only in whether the backlog is at least |
| @a limit. The default is to accurately compute the backlog. |
| */ |
| virtual uint64_t backlog(uint64_t limit = UINT64_MAX ///< Maximum value of interest |
| ) = 0; |
| }; |
| |
| inline TransformVCChain::TransformVCChain(ProxyMutex *m) : VConnection(m) {} |
| |
| /////////////////////////////////////////////////////////////////// |
| /// RangeTransform implementation |
| /// handling Range requests from clients |
| /////////////////////////////////////////////////////////////////// |
| |
| /*------------------------------------------------------------------------- |
| -------------------------------------------------------------------------*/ |
| |
| inline static int |
| num_chars_for_int(int64_t i) |
| { |
| int k = 1; |
| |
| if (i < 0) { |
| return 0; |
| } |
| |
| while ((i /= 10) != 0) { |
| ++k; |
| } |
| |
| return k; |
| } |
| |
| extern TransformProcessor transformProcessor; |