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Update BINARY_SUPPORT to use Content-Encoding to identify if data is binary #2170

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@monkut monkut commented Oct 1, 2020

Description

Alternative solution to #2080 intended to allow BINARY and text by making use of Content-Encoding header in the response.

When using whitenoise for caching, which provides compression, binary types may include mimetypes, "text/", "application/json":

  • response.mimetype.startswith("text/")
  • response.mimetype == "application/json"

Assuming that Content-Encoding will be set (as whitenoise apparently does) this allows compression to be applied to assets which have mimetypes "text/" and "application/json", while allowing for uncompressed "text/" and "application/json" still to be served.

About Content-Encoding:
https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Encoding

Not sure if this works for all use cases, but it currently appears to work for my workcase where whitenoise is performing compression of text/json files intended for caching, while still allowing text for html.

GitHub Issues

#2080

jneves and others added 5 commits June 14, 2020 21:35
When using _whitenoise_ for caching, which provides compression, binary types may include mimetypes, "text/", "application/json":

- response.mimetype.startswith("text/")
- response.mimetype == "application/json"

Assuming that Content-Encoding will be set (as whitenoise apparently does) this allows compression to be applied by the application for "text/" and "application/json".

About Content-Encoding:
https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Encoding
Use Content-Encoding to identify if data is binary
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coveralls commented Oct 1, 2020

Coverage Status

Coverage decreased (-0.2%) to 72.821% when pulling 14658ce on monkut:master into 0c8d99d on Miserlou:master.

travnels
travnels approved these changes Apr 8, 2021
Quidge added a commit to tackle-io/Zappa that referenced this pull request Apr 28, 2021
When using _whitenoise_ for caching, which provides compression, binary types
may include mimetypes, "text/", "application/json":

- response.mimetype.startswith("text/")
- response.mimetype == "application/json"

Assuming that Content-Encoding will be set (as whitenoise apparently does)
this allows compression to be applied by the application for "text/" and
"application/json".

About Content-Encoding:
developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Encoding

---

The above commit message and functional code change to zappa/handler.py was
written by GH user @monkut and a PR was provided with
Miserlou/Zappa#2170.

That PR was not merged in before the fork from Miserlou/zappa to Zappa/zappa.

This commit copies the code from that PR, adds a comment line referencing the
new migrated issue, and additionally adds tests to confirm behavior.
Quidge added a commit to tackle-io/Zappa that referenced this pull request Apr 29, 2021
When using _whitenoise_ for caching, which provides compression, binary types
may include mimetypes, "text/", "application/json":

- response.mimetype.startswith("text/")
- response.mimetype == "application/json"

Assuming that Content-Encoding will be set (as whitenoise apparently does)
this allows compression to be applied by the application for "text/" and
"application/json".

About Content-Encoding:
developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Encoding

---

The above commit message and functional code change to zappa/handler.py was
written by GH user @monkut and a PR was provided with
Miserlou/Zappa#2170.

That PR was not merged in before the fork from Miserlou/zappa to Zappa/zappa.

This commit copies the code from that PR, adds a comment line referencing the
new migrated issue, and additionally adds tests to confirm behavior.

Co-authored-by: monkut <[email protected]>
Quidge added a commit to tackle-io/Zappa that referenced this pull request Jun 2, 2021
When using _whitenoise_ for caching, which provides compression, binary types
may include mimetypes, "text/", "application/json":

- response.mimetype.startswith("text/")
- response.mimetype == "application/json"

Assuming that Content-Encoding will be set (as whitenoise apparently does)
this allows compression to be applied by the application for "text/" and
"application/json".

About Content-Encoding:
developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Encoding

---

The above commit message and functional code change to zappa/handler.py was
written by GH user @monkut and a PR was provided with
Miserlou/Zappa#2170.

That PR was not merged in before the fork from Miserlou/zappa to Zappa/zappa.

This commit copies the code from that PR, adds a comment line referencing the
new migrated issue, and additionally adds tests to confirm behavior.

Co-authored-by: monkut <[email protected]>
Quidge added a commit to tackle-io/Zappa that referenced this pull request Nov 25, 2021
When using _whitenoise_ for caching, which provides compression, binary types
may include mimetypes, "text/", "application/json":

- response.mimetype.startswith("text/")
- response.mimetype == "application/json"

Assuming that Content-Encoding will be set (as whitenoise apparently does)
this allows compression to be applied by the application for "text/" and
"application/json".

About Content-Encoding:
developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Encoding

---

The above commit message and functional code change to zappa/handler.py was
written by GH user @monkut and a PR was provided with
Miserlou/Zappa#2170.

That PR was not merged in before the fork from Miserlou/zappa to Zappa/zappa.

This commit copies the code from that PR, adds a comment line referencing the
new migrated issue, and additionally adds tests to confirm behavior.

Co-authored-by: monkut <[email protected]>
Quidge added a commit to tackle-io/Zappa that referenced this pull request Nov 29, 2021
When using _whitenoise_ for caching, which provides compression, binary types
may include mimetypes, "text/", "application/json":

- response.mimetype.startswith("text/")
- response.mimetype == "application/json"

Assuming that Content-Encoding will be set (as whitenoise apparently does)
this allows compression to be applied by the application for "text/" and
"application/json".

About Content-Encoding:
developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Encoding

---

The above commit message and functional code change to zappa/handler.py was
written by GH user @monkut and a PR was provided with
Miserlou/Zappa#2170.

That PR was not merged in before the fork from Miserlou/zappa to Zappa/zappa.

This commit copies the code from that PR, adds a comment line referencing the
new migrated issue, and additionally adds tests to confirm behavior.

Co-authored-by: monkut <[email protected]>
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6 participants