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This is an automatically generated e-mail. To reply, visit:
<a href="https://reviewboard.asterisk.org/r/1887/">https://reviewboard.asterisk.org/r/1887/</a>
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<p style="margin-top: 0;">On April 26th, 2012, 5:48 p.m., <b>Mark Michelson</b> wrote:</p>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Unfortunately I've run out of time to be able to look at this today. I'll look at it more tomorrow. Here are some thoughts:
In app_queue.c, how does the channel get serviced once the generator is created? In the previous incarnation of play_file(), there was a call to ast_waitstream() that would service the channel (and thus play the file) to the channel. When you put a generator on the channel, something needs to call ast_waitfor() and ast_read() in order to have the generator generate data for it. In say.c, it looks like you call ast_autoservice_start() at one point in order to have the autoservice thread do this for you, but in app_queue, this does not happen.
The code is a bit disorganized. play_file() in app_queue should be broken up into at least two functions (one to play the file in the background and one to play and wait until the file completes plus more for other logical operations). In addition, the code be organized a bit better, so that, for instance, all operations that get done when now_playing == 0 are done in one block instead of having it done in disparate blocks. This will improve readability and make it a bit easier to review.
Some of the locations of data seems odd to me. For instance, the generator that has been added to app_queue.c seems like it should go into file.c instead, since it is potentially useful for other applications to use. This way you could add some sort of ast_streamfile_background() call that would allow you to play files in the background from any application. I already mention down below that the datastore information and callbacks can be moved into the global_datastores.h and global_datastores.c files.
This seems like a very nice addition since this is how most queuing systems work. The implementation details are a bit off though. I will look at this more tomorrow.</pre>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">As I stated earlier, I was considering moving the generator stuff out of app_queue, but did not know where to. Thanks for the feedback, I'll spend time reformatting. This time around, I wanted more of an approval of the concept - if it was interesting or not, so whether it was worthwhile pursuing further.
I will probably need help with some of the details.
/O</pre>
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<p style="margin-top: 0;">On April 26th, 2012, 5:48 p.m., <b>Mark Michelson</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/1887/diff/2/?file=27573#file27573line6444" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/apps/app_queue.c</a>
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<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">void destroy_streamfile_info(struct ast_queue_streamfile_info *playdata)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">ast_autoservice_stop</span><span class="p">(</span><span class="n">chan</span><span class="p">);</span></pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">When was autoservice started?</pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">The channel could already have something running from earlier. Or?</pre>
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<p style="margin-top: 0;">On April 26th, 2012, 5:48 p.m., <b>Mark Michelson</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/1887/diff/2/?file=27573#file27573line6659" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/apps/app_queue.c</a>
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static int queue_exec(struct ast_channel *chan, const char *data)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">datastore</span> <span class="o">=</span> <span class="n">ast_datastore_alloc</span><span class="p">(</span><span class="n">ast_prompt_list</span><span class="p">(),</span> <span class="nb">NULL</span><span class="p">);</span></pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Check to be sure that ast_datastore_alloc() succeeds. Also, remove the parentheses after ast_prompt_list</pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Why remove parenthesis when calling a function?</pre>
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<p style="margin-top: 0;">On April 26th, 2012, 5:48 p.m., <b>Mark Michelson</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/1887/diff/2/?file=27573#file27573line6704" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/apps/app_queue.c</a>
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">check_turns:</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">play_file</span><span class="p">(</span><span class="n">qe</span><span class="p">.</span><span class="n">chan</span><span class="p">,</span> <span class="nb">NULL</span><span class="p">,</span> <span class="n">ringing</span><span class="p">,</span> <span class="n">qe</span><span class="p">.</span><span class="n">moh</span><span class="p">);</span> <span class="cm">/* OEJ - Trigger next prompt */</span></pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Please don't add initials to code comments. See the third bullet point here: https://wiki.asterisk.org/wiki/display/AST/Coding+Guidelines#CodingGuidelines-GeneralRules</pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">I thought I remove all of those. Just a mistake. </pre>
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<p style="margin-top: 0;">On April 26th, 2012, 5:48 p.m., <b>Mark Michelson</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/1887/diff/2/?file=27575#file27575line3516" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/include/asterisk/channel.h</a>
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">int ast_channel_get_device_name(struct ast_channel *chan, char *device_name, size_t name_buffer_length);</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm">/*! \brief Asynchronous filestream playing playlist</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"> Used (at least at first) in app_queue - in the ast_queue_streamfile_info channel datastore<span class="ew"> </span></span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm">*/</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="k">struct</span> <span class="n">ast_queue_streamfile_name</span> <span class="p">{</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="kt">char</span> <span class="o">*</span><span class="n">filename</span><span class="p">;</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">AST_LIST_ENTRY</span><span class="p">(</span><span class="n">ast_queue_streamfile_name</span><span class="p">)</span> <span class="n">list</span><span class="p">;</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="p">};</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm">/*! \brief Information data about background playing of prompts */</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="k">struct</span> <span class="n">ast_queue_streamfile_info</span> <span class="p">{</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="kt">void</span> <span class="p">(</span><span class="o">*</span><span class="n">digitHandler</span><span class="p">)(</span><span class="kt">void</span> <span class="o">*</span><span class="n">data</span><span class="p">,</span> <span class="kt">char</span> <span class="n">digit</span><span class="p">);</span> <span class="cm">/* a func ptr to the handler that will do what needs doing when the streaming of a soundfile is finished */</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">struct</span> <span class="n">queue_ent</span> <span class="o">*</span><span class="n">qe</span><span class="p">;</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">AST_LIST_HEAD</span><span class="p">(,</span><span class="n">ast_queue_streamfile_name</span><span class="p">)</span> <span class="n">flist</span><span class="p">;</span> <span class="cm">/* a list of other sound files that need to be played in sequence */</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">struct</span> <span class="n">ast_channel</span> <span class="o">*</span><span class="n">chan</span><span class="p">;</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="kt">int</span> <span class="n">ringing</span><span class="p">;</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="kt">char</span> <span class="n">moh</span><span class="p">[</span><span class="mi">80</span><span class="p">];</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="kt">int</span> <span class="n">now_playing</span><span class="p">;</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="kt">int</span> <span class="n">valid_exit</span><span class="p">;</span> <span class="cm">/* if valid_exit() in app_queue is true */</span></pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">One thing that may simplify your life here is to check out global_datastores.h and global_datastores.c. We store datastore information in those files if the datastore may be accessed by multiple source files. An example of one is the datastore that keeps track of all the interfaces that have been dialed by a channel to ensure that the channel does not get caught in a forwarding loop.
Using those files, you would not have to spread out the datastore information between channel.h, file.h, and file.c</pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Great. Thanks.</pre>
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<p>- Olle E</p>
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<p>On April 26th, 2012, 9:42 a.m., Olle E Johansson wrote:</p>
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<div>Review request for Asterisk Developers.</div>
<div>By Olle E Johansson.</div>
<p style="color: grey;"><i>Updated April 26, 2012, 9:42 a.m.</i></p>
<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Today, when a prompt is being played to a call waiting in the queue and an agent becomes available, the agent will not get the call until the prompt is finished. Both customer and agent is kept waiting.
With this rather big piece of code, we attach a generator to play prompts. The generator can, like all generators, be stopped at any time so that the agent (queue member) can get the call immediately.
The generator is now placed in app_queue, but could propably be moved somewhere else. It also changes functionality in main/say.c in order to be able to place those prompts in the same prompt queue for background processing. The same generator could be used to sevice conference bridges and maybe be added as a dialplan function at some point for background playlists.
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Testing </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Quite a lot of testing in our environment during the rather long time we've been testing this. Customer is happy.
There was some complaints from a bowl of petunias, which made me a bit surprised.</pre>
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<div style="margin-top: 1.5em;">
<b style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Bugs: </b>
<a href="https://issues.asterisk.org/jira/browse/19795">19795</a>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>/trunk/apps/app_queue.c <span style="color: grey">(364000)</span></li>
<li>/trunk/configs/queues.conf.sample <span style="color: grey">(364000)</span></li>
<li>/trunk/include/asterisk/channel.h <span style="color: grey">(364000)</span></li>
<li>/trunk/include/asterisk/file.h <span style="color: grey">(364000)</span></li>
<li>/trunk/main/asterisk.dynamics <span style="color: grey">(364000)</span></li>
<li>/trunk/main/file.c <span style="color: grey">(364000)</span></li>
<li>/trunk/main/say.c <span style="color: grey">(364000)</span></li>
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<p><a href="https://reviewboard.asterisk.org/r/1887/diff/" style="margin-left: 3em;">View Diff</a></p>
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