Adds encoders. #8
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jcchavezs
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kevinlebrun
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There are weird things going on around those micro-seconds time management. Are strings an option?
src/DDTrace/Encoders/Json.php
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| * @param Span $span | ||
| * @return array | ||
| */ | ||
| private static function spanToArray(Span $span) |
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Why is this method declared static? Is an instance method not good enough?
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Good question, don't remember the answer but will check it out later.
src/DDTrace/Encoders/Json.php
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| return $arraySpan; | ||
| } | ||
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| private static function encodeSpan(Span $span) |
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Same as for spanToArray.
| } | ||
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| if ($span->isFinished()) { | ||
| $arraySpan['duration_micro'] = 0; |
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It seems a little hacky. Why are you doing the replace inside encodeSpan? If it is a matter of int precision even with those rare 32-bit runtime you have more then 2000second to store the duration.
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It was a matter of consistency. Since both start and duration are being stored as micro and then converted into nano when encoding, doing so only for start and not for duration seemed weird to me. If this bugs you too much we can have a chat and get into an agreement. WDYT?
| 'name' => $span->getOperationName(), | ||
| 'resource' => $span->getResource(), | ||
| 'service' => $span->getService(), | ||
| 'start_micro' => 0, |
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It seems a little hacky.
| { | ||
| $expectedPayload = <<<JSON | ||
| [[{"trace_id":"160e7072ff7bd5f1","span_id":"160e7072ff7bd5f2","name":"test_name","resource":"test_resource", | ||
| JSON |
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Why is this concatenation necessary?
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This was because maximum line length per file (linters). The way to avoid this is to ident the json fields but that screw up the comparison in line 31. Remember, we can't convert the json into array/object in order to compare it because of the lack of support for int64 in PHP.
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Not sure about the string @kevinlebrun. @palazzem is it possible to send the |
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@jcchavezs actually the Trace Agent (written in Go) expects an This happens for the MsgPack Encoder, while for the JSON Encoder you'll get: |
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I guess since this is the only way to pass the int64 we can merge this PR. What do you think @kevinlebrun ? |
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Yes, totally. |
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@kevinlebrun @palazzem can you approve this PR? |
This depends on #7
Ping @palazzem @vlad-mh @kevinlebrun