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Improve EC2 Query spec documentation #823

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Jun 9, 2021
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Improve EC2 Query spec documentation #823

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5847a4b
Improve EC2 Query spec documentation
jdisanti Jun 9, 2021
5373e2c
Fix blurb describing EC2 Query error shape
jdisanti Jun 9, 2021
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86 changes: 30 additions & 56 deletions docs/source/1.0/spec/aws/aws-ec2-query-protocol.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -19,9 +19,10 @@ This specification defines the ``aws.protocols#ec2`` protocol.
--------------------------------

Summary
Adds support for an HTTP protocol that sends requests in the query string
OR in a ``x-form-url-encoded`` body and responses in XML documents. This
protocol is an Amazon EC2-specific extension of the ``awsQuery`` protocol.
Adds support for an HTTP protocol that sends requests in a
``application/x-www-form-url-encoded`` body and responses in XML
documents. This protocol is an Amazon EC2-specific extension
of the ``awsQuery`` protocol.
Trait selector
``service [trait|xmlNamespace]``

Expand Down Expand Up @@ -145,27 +146,18 @@ resolved using the following process:
member, if present.
2. Use the value of the :ref:`xmlName trait <xmlName-trait>` applied to the
member with the first letter capitalized, if present.
3. Use the default value for the member with the first letter capitalized, if
present:
3. Use the default value for the member, if present:

.. list-table::
:header-rows: 1
:widths: 50 50

* - Member location
- Default value
* - ``list`` member
- The string literal "member"
* - ``set`` member
- The string literal "member"
* - ``map`` key
- The string literal "key"
* - ``map`` value
- The string literal "value"
* - ``structure`` member
- The :token:`member name <shape_id_member>`
- The :token:`member name <shape_id_member>` capitalized
* - ``union`` member
- The :token:`member name <shape_id_member>`
- The :token:`member name <shape_id_member>` capitalized


----------------
Expand Down Expand Up @@ -266,11 +258,11 @@ The ``x-www-form-urlencoded`` serialization is:

Action=Ec2QueryStructures
&Version=2020-07-02
&foo=bar
&Foo=bar
&A=example0
&B=example1
&C=example2
&baz.temp=example3
&Baz.Temp=example3


Collections
Expand All @@ -286,21 +278,9 @@ For example, given the following:
ListArg: StringList,
ComplexListArg: GreetingList,

@xmlFlattened
FlattenedListArg: StringList,

ListArgWithXmlNameMember: ListWithXmlName,

// Notice that the xmlName on the targeted list member is ignored.
@xmlFlattened
@ec2QueryName("Hi")
@ec2QueryName("Renamed")
@xmlName("IgnoreMe")
FlattenedListArgWithXmlName: ListWithXmlName,
}

list ListWithXmlName {
@xmlName("item")
member: String
RenamedListArg: StringList,
}

list StringList {
Expand All @@ -315,32 +295,27 @@ For example, given the following:
hi: String,
}

The ``x-www-form-urlencoded`` serialization is:
The ``application/x-www-form-urlencoded`` serialization is:

.. code-block:: text

Action=Ec2QueryLists
&Version=2020-07-02
&ListArg.member.1=foo
&ListArg.member.2=bar
&ListArg.member.3=baz
&ComplexListArg.member.1.hi=hello
&ComplexListArg.member.2.hi=hola
&FlattenedListArg.1=A
&FlattenedListArg.2=B
&ListArgWithXmlNameMember.item.1=A
&ListArgWithXmlNameMember.item.2=B
&Hi.1=A
&Hi.2=B
&ListArg.1=foo
&ListArg.2=bar
&ListArg.3=baz
&ComplexListArg.1.Hi=hello
&ComplexListArg.2.Hi=hola
&Renamed.1=A
&Renamed.2=B


----------------------
Response serialization
----------------------

The ``ec2Query`` protocol serializes XML responses within an XML root node with
the name of the operation's output suffixed with "Response". A nested element,
with the name of the operation's output suffixed with "Result", contains the
the name of the operation's output suffixed with "Response", which contains the
contents of the successful response.

The value of the ``uri`` member of the :ref:`xmlNamespace trait <xmlNamespace-trait>`
Expand All @@ -350,9 +325,7 @@ following is a sample response to an operation named ``XmlTest``.
.. code-block:: xml

<XmlTestResponse xmlns="https://example.com/">
<XmlTestResult>
<testValue>Hello!</testValue>
</XmlTestResult>
<testValue>Hello!</testValue>
</XmlTestResponse>

XML shape serialization
Expand All @@ -378,15 +351,16 @@ serialized in the response.

.. code-block:: xml

<Errors>
<Error>
<Type>Sender</Type>
<Code>InvalidGreeting</Code>
<Message>Hi</Message>
<AnotherSetting>setting</AnotherSetting>
</Error>
<Response>
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<Errors>
<Error>
<Code>InvalidGreeting</Code>
<Message>Hi</Message>
<AnotherSetting>setting</AnotherSetting>
</Error>
</Errors>
<RequestId>foo-id</RequestId>
</Errors>
</Response>


.. _ec2Query-compliance-tests:
Expand Down