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zwoop pushed a commit to branch 9.1.x
in repository https://gitbox.apache.org/repos/asf/trafficserver.git


The following commit(s) were added to refs/heads/9.1.x by this push:
     new 221b081  Cleanup: Rename IOBufferReader of Http2ClientSession (#7569)
221b081 is described below

commit 221b0812e85a7c35708bb44e5b83c904bb405761
Author: Masaori Koshiba <masa...@apache.org>
AuthorDate: Fri Mar 5 08:53:45 2021 +0900

    Cleanup: Rename IOBufferReader of Http2ClientSession (#7569)
    
    (cherry picked from commit 664b3ad145ee8193408a55f968398f5df1289cad)
---
 proxy/http2/Http2ClientSession.cc | 36 ++++++++++++++++++------------------
 proxy/http2/Http2ClientSession.h  | 15 ++++++++++-----
 2 files changed, 28 insertions(+), 23 deletions(-)

diff --git a/proxy/http2/Http2ClientSession.cc 
b/proxy/http2/Http2ClientSession.cc
index 10879a0..d235cd2 100644
--- a/proxy/http2/Http2ClientSession.cc
+++ b/proxy/http2/Http2ClientSession.cc
@@ -175,12 +175,12 @@ Http2ClientSession::start()
   
HTTP2_SET_SESSION_HANDLER(&Http2ClientSession::state_read_connection_preface);
 
   VIO *read_vio = this->do_io_read(this, INT64_MAX, this->read_buffer);
-  write_vio     = this->do_io_write(this, INT64_MAX, this->sm_writer);
+  write_vio     = this->do_io_write(this, INT64_MAX, 
this->_write_buffer_reader);
 
   this->connection_state.init();
   send_connection_event(&this->connection_state, HTTP2_SESSION_EVENT_INIT, 
this);
 
-  if (this->_reader->is_read_avail_more_than(0)) {
+  if (this->_read_buffer_reader->is_read_avail_more_than(0)) {
     this->handleEvent(VC_EVENT_READ_READY, read_vio);
   }
 }
@@ -215,12 +215,12 @@ Http2ClientSession::new_connection(NetVConnection 
*new_vc, MIOBuffer *iobuf, IOB
 
   this->read_buffer             = iobuf ? iobuf : 
new_MIOBuffer(HTTP2_HEADER_BUFFER_SIZE_INDEX);
   this->read_buffer->water_mark = 
connection_state.server_settings.get(HTTP2_SETTINGS_MAX_FRAME_SIZE);
-  this->_reader                 = reader ? reader : 
this->read_buffer->alloc_reader();
+  this->_read_buffer_reader     = reader ? reader : 
this->read_buffer->alloc_reader();
 
   // This block size is the buffer size that we pass to SSLWriteBuffer
   auto buffer_block_size_index = 
iobuffer_size_to_index(Http2::write_buffer_block_size, MAX_BUFFER_SIZE_INDEX);
   this->write_buffer           = new_MIOBuffer(buffer_block_size_index);
-  this->sm_writer              = this->write_buffer->alloc_reader();
+  this->_write_buffer_reader   = this->write_buffer->alloc_reader();
   this->_write_size_threshold  = index_to_buffer_size(buffer_block_size_index) 
* Http2::write_size_threshold;
 
   this->_handle_if_ssl(new_vc);
@@ -390,11 +390,11 @@ Http2ClientSession::state_read_connection_preface(int 
event, void *edata)
   STATE_ENTER(&Http2ClientSession::state_read_connection_preface, event);
   ink_assert(event == VC_EVENT_READ_COMPLETE || event == VC_EVENT_READ_READY);
 
-  if (this->_reader->read_avail() >= 
static_cast<int64_t>(HTTP2_CONNECTION_PREFACE_LEN)) {
+  if (this->_read_buffer_reader->read_avail() >= 
static_cast<int64_t>(HTTP2_CONNECTION_PREFACE_LEN)) {
     char buf[HTTP2_CONNECTION_PREFACE_LEN];
     unsigned nbytes;
 
-    nbytes = copy_from_buffer_reader(buf, this->_reader, sizeof(buf));
+    nbytes = copy_from_buffer_reader(buf, this->_read_buffer_reader, 
sizeof(buf));
     ink_release_assert(nbytes == HTTP2_CONNECTION_PREFACE_LEN);
 
     if (memcmp(HTTP2_CONNECTION_PREFACE, buf, nbytes) != 0) {
@@ -409,7 +409,7 @@ Http2ClientSession::state_read_connection_preface(int 
event, void *edata)
     }
 
     Http2SsnDebug("received connection preface");
-    this->_reader->consume(nbytes);
+    this->_read_buffer_reader->consume(nbytes);
     HTTP2_SET_SESSION_HANDLER(&Http2ClientSession::state_start_frame_read);
 
     _vc->set_inactivity_timeout(HRTIME_SECONDS(Http2::no_activity_timeout_in));
@@ -418,7 +418,7 @@ Http2ClientSession::state_read_connection_preface(int 
event, void *edata)
     // XXX start the write VIO ...
 
     // If we have unconsumed data, start tranferring frames now.
-    if (this->_reader->is_read_avail_more_than(0)) {
+    if (this->_read_buffer_reader->is_read_avail_more_than(0)) {
       return this->handleEvent(VC_EVENT_READ_READY, vio);
     }
   }
@@ -446,13 +446,13 @@ int
 Http2ClientSession::do_start_frame_read(Http2ErrorCode &ret_error)
 {
   ret_error = Http2ErrorCode::HTTP2_ERROR_NO_ERROR;
-  ink_release_assert(this->_reader->read_avail() >= 
(int64_t)HTTP2_FRAME_HEADER_LEN);
+  ink_release_assert(this->_read_buffer_reader->read_avail() >= 
(int64_t)HTTP2_FRAME_HEADER_LEN);
 
   uint8_t buf[HTTP2_FRAME_HEADER_LEN];
   unsigned nbytes;
 
   Http2SsnDebug("receiving frame header");
-  nbytes = copy_from_buffer_reader(buf, this->_reader, sizeof(buf));
+  nbytes = copy_from_buffer_reader(buf, this->_read_buffer_reader, 
sizeof(buf));
 
   this->cur_frame_from_early_data = false;
   if (!http2_parse_frame_header(make_iovec(buf), this->current_hdr)) {
@@ -470,7 +470,7 @@ Http2ClientSession::do_start_frame_read(Http2ErrorCode 
&ret_error)
   Http2SsnDebug("frame header length=%u, type=%u, flags=0x%x, streamid=%u", 
(unsigned)this->current_hdr.length,
                 (unsigned)this->current_hdr.type, 
(unsigned)this->current_hdr.flags, this->current_hdr.streamid);
 
-  this->_reader->consume(nbytes);
+  this->_read_buffer_reader->consume(nbytes);
 
   if (!http2_frame_header_is_valid(this->current_hdr, 
this->connection_state.server_settings.get(HTTP2_SETTINGS_MAX_FRAME_SIZE))) {
     ret_error = Http2ErrorCode::HTTP2_ERROR_PROTOCOL_ERROR;
@@ -500,7 +500,7 @@ Http2ClientSession::state_complete_frame_read(int event, 
void *edata)
   VIO *vio = static_cast<VIO *>(edata);
   STATE_ENTER(&Http2ClientSession::state_complete_frame_read, event);
   ink_assert(event == VC_EVENT_READ_COMPLETE || event == VC_EVENT_READ_READY);
-  if (this->_reader->read_avail() < this->current_hdr.length) {
+  if (this->_read_buffer_reader->read_avail() < this->current_hdr.length) {
     if (this->_should_do_something_else()) {
       if (this->_reenable_event == nullptr) {
         vio->disable();
@@ -513,7 +513,7 @@ Http2ClientSession::state_complete_frame_read(int event, 
void *edata)
     }
     return 0;
   }
-  Http2SsnDebug("completed frame read, %" PRId64 " bytes available", 
this->_reader->read_avail());
+  Http2SsnDebug("completed frame read, %" PRId64 " bytes available", 
this->_read_buffer_reader->read_avail());
 
   return state_process_frame_read(event, vio, true);
 }
@@ -522,16 +522,16 @@ int
 Http2ClientSession::do_complete_frame_read()
 {
   // XXX parse the frame and handle it ...
-  ink_release_assert(this->_reader->read_avail() >= this->current_hdr.length);
+  ink_release_assert(this->_read_buffer_reader->read_avail() >= 
this->current_hdr.length);
 
-  Http2Frame frame(this->current_hdr, this->_reader, 
this->cur_frame_from_early_data);
+  Http2Frame frame(this->current_hdr, this->_read_buffer_reader, 
this->cur_frame_from_early_data);
   send_connection_event(&this->connection_state, HTTP2_SESSION_EVENT_RECV, 
&frame);
   // Check whether data is read from early data
   if (this->read_from_early_data > 0) {
     this->read_from_early_data -=
       this->read_from_early_data > this->current_hdr.length ? 
this->current_hdr.length : this->read_from_early_data;
   }
-  this->_reader->consume(this->current_hdr.length);
+  this->_read_buffer_reader->consume(this->current_hdr.length);
   ++(this->_n_frame_read);
 
   // Set the event handler if there is no more data to process a new frame
@@ -547,7 +547,7 @@ Http2ClientSession::state_process_frame_read(int event, VIO 
*vio, bool inside_fr
     do_complete_frame_read();
   }
 
-  while (this->_reader->read_avail() >= 
static_cast<int64_t>(HTTP2_FRAME_HEADER_LEN)) {
+  while (this->_read_buffer_reader->read_avail() >= 
static_cast<int64_t>(HTTP2_FRAME_HEADER_LEN)) {
     // Cancel reading if there was an error or connection is closed
     if (connection_state.tx_error_code.code != 
static_cast<uint32_t>(Http2ErrorCode::HTTP2_ERROR_NO_ERROR) ||
         connection_state.is_state_closed()) {
@@ -579,7 +579,7 @@ Http2ClientSession::state_process_frame_read(int event, VIO 
*vio, bool inside_fr
     }
 
     // If there is no more data to finish the frame, set up the event handler 
and reenable
-    if (this->_reader->read_avail() < this->current_hdr.length) {
+    if (this->_read_buffer_reader->read_avail() < this->current_hdr.length) {
       
HTTP2_SET_SESSION_HANDLER(&Http2ClientSession::state_complete_frame_read);
       break;
     }
diff --git a/proxy/http2/Http2ClientSession.h b/proxy/http2/Http2ClientSession.h
index 782854b..2efc66d 100644
--- a/proxy/http2/Http2ClientSession.h
+++ b/proxy/http2/Http2ClientSession.h
@@ -136,11 +136,17 @@ private:
 
   bool _should_do_something_else();
 
-  SessionHandler session_handler      = nullptr;
+  ////////
+  // Variables
+  SessionHandler session_handler = nullptr;
+
   MIOBuffer *read_buffer              = nullptr;
-  IOBufferReader *_reader             = nullptr;
-  MIOBuffer *write_buffer             = nullptr;
-  IOBufferReader *sm_writer           = nullptr;
+  IOBufferReader *_read_buffer_reader = nullptr;
+
+  VIO *write_vio                       = nullptr;
+  MIOBuffer *write_buffer              = nullptr;
+  IOBufferReader *_write_buffer_reader = nullptr;
+
   Http2FrameHeader current_hdr        = {0, 0, 0, 0};
   uint32_t _write_size_threshold      = 0;
   uint32_t _write_time_threshold      = 100;
@@ -152,7 +158,6 @@ private:
   History<HISTORY_DEFAULT_SIZE> _history;
   Milestones<Http2SsnMilestone, 
static_cast<size_t>(Http2SsnMilestone::LAST_ENTRY)> _milestones;
 
-  VIO *write_vio                 = nullptr;
   int dying_event                = 0;
   bool kill_me                   = false;
   Http2SessionCod cause_of_death = Http2SessionCod::NOT_PROVIDED;

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