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Pedestal Changelog

NOTE: Whenever upgrading versions of pedestal-app, please be sure to clean your project's out directory by running lein clean.

0.5.5 - December 18, 2018

Added a json-api sample.
Pedestal.log now adheres to recent ns spec changes allowing its use with Clojure 1.10. Addresses issue #603.
Fix for pedestal.log's distributed tracing support when passing a map to log/log-span.
Fix async termination. Addresses issue #581.
Fix recursive loop error in API Gateway async utilities.

0.5.4 - June 29, 2018

io.pedestal/pedestal.log now provides a functional logging interface
io.pedestal/pedestal.log now ships with basic support for MDC
Dependencies have been bumped project wide
javac-options source/target bumped to JDK 1.8
Added support for pre-parsed query params
More sample projects
Distributed tracing support
Pedestal AWS support
- AWS XRay
- AWS Lambda
Dev-mode CSP setting is now correctly quoted.
Jetty deps bumped up, fixing the JDK9 issue in the process (#555 #552).
Tomcat deps bumped up, fixing an initialization bug that was lingering.
SSE metric increment/decrement correctly accounted for in all branches #548.
SSE safely runs the handling loop in a try/finally block, to ensure shutdown and cleanup always happens #560.
BREAKING CHANGE: nil ::host in service map defaults to localhost now (rather than being container specific) #557.
Content-negotiation response map now conforms to Ring spec #540.
response-for now catches nil header values early, with a helpful exception #554.

For a full list of changes, please see this comparison of 0.5.3...0.5.4.

For more detailed release notes, refer to the 0.5.4 release document.

0.5.3 - October 3, 2017

CSRF default interceptor now implies body-params when turned on
The internal linker map within url-for is now delayed, while upholding the existing API
not-found and request-logging default interceptors are now optional and can be toggled in the Service Map
All Routers are verb-neutral. Table Routes is the only verb-neutral data definition currently
Service Template improves the developer experience around CSP (mostly turned off in dev-mode)
url-for correctly handles trailing slashes
Clojure 1.9.0 and core.async spec bugs all addressed by bumping dependencies
Servlet Chain Provider correctly handles multi-valued header entries

For a full list of changes, please see this comparison of 0.5.2...0.5.3.

0.5.2 - January 12, 2017

Immutant WebSocket support added
Dependency refresh; Logback config updates based on latest version
Sample and doc updates
Secure Headers now supports Content Security Policy, Download Options, and Cross Domain Policy settings
response-for now correctly handles Transit bodies (requests and replies)
CSRF double-submit cookie can now bootstrap itself even if sessions are turned off
Metric name formatting was breaking StatsD and other aggregators; A new format function fixes this

For a full list of changes, please see this comparison of 0.5.1...0.5.2.

0.5.1 - August 26, 2016

New module/artifact layout. Internal pieces (interceptor chain, routing, logging/metrics) can be individually consumed
WebSocket interface improvements to support new initializations/setups
Configurable SSL options for Jetty
The ability to completely disable HTTP on Jetty if you want to force HTTPS only
HTTP/2 and ALPN support through a Java Agent
New Pedestal sit and documentation updates

For a full list of changes, please see this comparison of 0.5.0...0.5.1.

0.5.0 - June 02, 2016

Map-tree router (used by default)
Servlet independence via Chain Providers between the container and the Interceptor Chain
Jetty has ALPN, HTTP/2, and WebSocket support
Interceptor chain refactor
Interceptor chain can be run in, out, or in-out; Can now handle streams of data
Metrics tooling and API added. Reports/publishes to JMX by default
Service template has Docker and OSv support -- Dockerfile and Capstanfile
Service template has ALPN boot-dep configured. Comment out or remove if not using ALPN (HTTP/2)
Route definition API refactored
Table-routes format added
Terse-route parsing and error reporting improved
Request API added while creating Chain Providers; Zero-copy, Lazy, and Map requests added
Support for SSE Event-Id added
Support for Content-Negotiation added
Support for SSL added to embedded Tomcat
WAR tooling added to service-tools

For a full list of changes, please see this comparison of 0.4.1...0.5.0.

0.4.1 - November 04, 2015

Bug fixes for tree-based router - you can no longer fall off the tree
NIO speed enhancements - utilize a better API call
response-for split apart to allow for better instrumentation and test control
response-for now handles async use
Dependencies updated
SSE buffer bug patched - can't resuse core.async buffers
SSE updated for open-ended option; New option for cleanup callback added
Samples and docs cleaned up and improved
Dedicated branches for HTTP2/ALPN support and WebSockets (not integrated into the interceptor chain)

For a full list of changes, please see this comparison of 0.4.0...0.4.1.

0.4.0 - April 17, 2015

Tree-based router (used by default)
Open routing (users can set their own router)
Robust error-handler interceptor (pattern-matching across all interceptors)
Updated Interceptor API (built around a protocol / open for extension)
Updated documentation samples
Bug fixes and small enhancements to the testing tools

For a full list of changes, please see this comparison of 0.3.1...0.4.0.

0.3.1 - October 9, 2014

Container specific functionality is tucked behind a protocol
Immutant added as a supported platform type
NIO support added for Jetty and Immutant
SSE now passes along the original context to the start-fn
Map-based terse route format added
Servlet integration uses Clojure Java API instead of RT
Transit support added for requests and responses

For a full list of changes, please see this comparison of 0.3.0...0.3.1.

0.3.0 - June 20, 2014

Performance optimizations and new connection code
core.async channel-based SSE
Better/cleaner SSE heartbeat threadpool
Jetty9, Tomcat8, Clojure 1.6, Servlet 3.1
Open HTTP verb smuggling
CSRF-protection interceptor in the default interceptors (you need to set options for it to turn on)
Sessions are http-only by default (pushed up to Ring)
Secure-headers interceptor in the default interceptors
Servlet filters can be dropped directly into a service-map definition
Namespace refactor
Simpler template and less dev-tool trickery
New public API exposed for building, composing, starting, and stopping services
Dependencies upgraded
Bug fixes

Details will emerge in an upcoming blog post and within the guides and docs here.

For a full list of changes, please see this comparison of 0.2.2...0.3.0.

0.2.2 - November 5, 2013

Bug fix release preceding some exciting (and breaking) 0.3.0 changes. Unless any major bugs are discovered, no further work will continue on the 0.2.x stream.

For a full list of changes, please see this comparison of 0.2.1...0.2.2.

0.2.1 - September 1, 2013

Small bug fix for app-template.

For a full list of changes, please see this comparison of 0.2.0...0.2.1.

0.2.0 - August 30, 2013

This is a big one folks. Developer tooling has moved from generated projects into the app- and service-tools libraries.

If you want to take advantage of all the super-awesome new features then further action is required. See the respective changelogs in App and Service for more info.

App

Developer tooling has moved in its entirety to app-tools.

Notable improvements:
- Tooling functions are automatically included when running lein repl.
- App configuration can be reloaded with (reload-config)
- Future upgrades to tooling will be incorporated more easily.
Additionally, app configuration is specified by an EDN file (instead of an executable Clojure file.) New projects will make use of this feature, but pre-0.2.0 generated projects will not.

You do not have to make this upgrade, but we suggest you do.

The easiest way to upgrade is to re-generate your application with the 0.2.0 app-template and transfer your existing code into it. It is possible, however, to migrate your existing application.

How to migrate a 0.1.x project to 0.2.0: 1. Upgrade your project's pedestal-app dependencies to version "0.2.0" 2. Remove the dev/ folder. 3. $ touch config/user.clj -- This is needed for :repl-options with :init user to work. 4. Update your project.clj's :main and :repl-options keys like so. 5. Add the piggieback dependency to your project.clj ([com.cemerick/piggieback "0.1.0"]). 6. Update your application's config.clj file. There are two ways to do this... 1. *If you have not modified your config.clj: Generate a new application with the same name as your existing application, and steal the config.edn file from it. 2. If you have changed your config.clj, or you're a glutten for punishment perform these steps (looking like this is our goal): 1. mv config/config.clj config/config.edn 2. Remove the ns declaration. 3. Unwrap the configs def into a raw map. 4. Remove quotes from quoted namespaces. Look in :main and :renderer keys. 5. At path [:build :watch-files], (compile/html-files-in "app/templates") should become a map of tags to regex pattern strings like {:html ["^app/templates"]}. Note these are string regex patterns, not regexps--regexps aren't supported by EDN. 6. At path [:build :triggers], existing strings should be converted to string regex patterns. For example, the original {:html ["project-name/rendering.js"]} would become {:html ["project-name//rendering\\.js$"]}.
Tooling's cljs-repl is now provided by Chas Emerick's Piggieback.
Tooling's cljs-repl is now more clear about usage. This fixes #93, #90.
App's ClojureScript dependency has been bumped to r1835. Namespaced keywords are now allowed (::msg/topic)!
Logging in the browser is now grouped. #95
The template now includes a :ui aspect for rendering the simulated behavior. #184, #187
Added the :read-as option for msg/param. Setting to :data causes collected values to be parsed by the Clojure reader. #166*

Service

Service tooling has moved out of generated projects into a service-tools library.

Notable improvements:
- Tooling functions are automatically included when running lein repl.
- Future upgrades to tooling will be incorporated more easily.
There is a bit of migration necessary to move existing projects to 0.2.0 tooling. You don't have to make this change, but we suggest you do.

How to migrate a 0.1.x project to 0.2.0: 1. Update your project's dependencies to match the new ones: 1. Upgrade your project's pedestal-service dependencies to version "0.2.0". 2. Add [io.pedestal/pedestal.service-tools "0.2.0"] as a dependency. 3. Remove logback and slf4j logging dependencies. 2. Remove the dev/ folder 3. $ touch config/user.clj -- This is needed for :repl-options with :init user to work. 4. Update your project.clj's :main and :repl-options keys to match the new template project.clj. 5. Pare down your src/**/server.clj file to match the new template server.clj.
Service now uses Cheshire instead of clojure.data.json for constructing json-responses and parsing json bodies. #162

This change does eliminate some JSON parsing options that were previously possible in 0.1.10. Specifically the following options are no longer supported:
- :eof-error? - "If true (default) will throw exception if the stream is empty."
- :eof-value - "Object to return if the stream is empty and eof-error? is false. Default is nil."
If your application makes use of these options you will need to construct a body-params interceptor with a parser-map where you have swapped in your own #"^application/json" key with a custom-json-parser similar to the old version.

That might look something like this:
```
;; In a utility namespace
(require '[io.pedestal.service.http.body-params :as bp])
(defn old-style-json-parser ...)

(def my-body-params (bp/body-params (-> (bp/default-parser-map)
                                        (assoc #"^application/json" (old-style-json-parser)))))
```

The default behavior of the body-params interceptor now keywordizes JSON keys. To retain the old behavior, create a body-params interceptor like so:

(require '[io.pedestal.service.http.body-params :as bp])
(def string-keys-body-params (bp/body-params (bp/default-parser-map :json-options {:key-fn nil})))

A bug with CORS headers has been fixed.
The default MIME type has been returned to text/plain (it was a bug that it changed to octet-stream.)

Miscellaneous bug-fixes and improvements

For a full list of changes, please see this comparison of 0.1.10...0.2.0.

0.1.10 - July 5, 2013

App

The messages queue is now a priority queue. Specify msg/priority :high in a message for that message to be processed before all other unadorned messages. 2495b9a5
Various improvements that make it easier to run in a web worker (more on that to follow, :wink:)

Service

io.pedestal.service.http.route/url-for now accepts a :fragment option for specifying URL fragments (i.e `http://example.com/#foobars). #85
io.pedestal.service.http.body-params's edn and json parsers can now be configured (both alone and as part of default-parser-map). #96, #97, #98

Miscellaneous bug-fixes and improvements

For a full list of changes, please see this comparison of 0.1.9...0.1.10.

0.1.9 - June 14, 2013

General

All Pedestal libraries now properly depend on Clojure 1.5.1.

App

The dataflow engine now properly reports changes when nodes have nil or falsey values. #78
Messages that throw exceptions during processing now log an error message.
Templates can now insert content at a specific index with io.pedestal.app.render.push.templates/insert-t. #81
Generated dev/dev.clj now uses (start) instead of (run), bringing it in line with pedestal-service. #84

Miscellaneous bug-fixes and improvements

For a full list of changes, please see this comparison of 0.1.8...0.1.9.

0.1.8 - May 29, 2013

General

App and service templates now allow creating projects with namespaces #68.

      $ lein new pedestal-app com.example/foo
      ... creates foo/ with src/com/example/foo/*.clj

Service

Corrected a test error in the generated service template project.

Miscellaneous bug-fixes and improvements

For a full list of changes, please see this comparison of 0.1.7...0.1.8.

0.1.7 - May 24, 2013

App

The new simplified dataflow engine is here! We're working to update our documentation and samples now. Stay informed by following @pedestal_team on twitter.
- Existing applications will continue to function normally.
io.pedestal.app.templates/dtfn now allows for more than one data field #60.

Service

Empty EDN responses are now handled gracefully #69.
Resources for services can now be drawn from resources/ #51.
Typo fixes in HTML and JSON interceptors #72.
Corrected a few places the Content-Type header was not being set properly #58, #65.

Miscellaneous bug-fixes and improvements

For a full list of changes, please see this comparison of 0.1.6...0.1.7.

0.1.6 - May 03, 2013

Service

Context paths now work with JBoss
It is now possible to specify TCP port in routes (default: 8080). Specified ports will also be reflected in generated URL.
```
  (defroutes routes
    [[:app1 8080
      ["/" {:get app1-root}]]
     [:app2 8181
      ["/" {:get app2-root}]]]
```

Miscellaneous bug-fixes and improvements

For a full list of changes, please see a comparison of 0.1.5...0.1.6.

0.1.4/0.1.5 - April 05, 2013

We encountered a bug deploying version 0.1.4 so that release was re-done as version 0.1.5

App

lein clean now correctly deletes out directory.

Service

Added text-as-html and data-as-json interceptors.
Newly generated service apps assume content is text/html if not specified otherwise.

app-tools now serves every request with header Cache-Control: no-cache (#44) - @rkneufeld

Service

Add CORS support to SSE and service template - @timewald

Travis CI integration has been enabled (#27) - @cldwalker
lein repl history is now ignored by git (#38) - @crimeminister

App

app tests no longer have non-deterministic timing problems (#39) - @brentonashworth
app-tools now plays (more) nicely with Windows (#23, #29, #31) - @djpowell, @rkneufeld

Service

Add support for Heroku (#18) - @aredington, @cldwalker, @hiredman, @timewald
An HTTP status is now sufficient to bypass the not-found interceptor (whereas it used to require headers) (#30, #34) - @hiredman, @rkneufeld
Removed a number of incorrect :or keys (#32) - @cldwalker
Usage of 'read-string' has been audited and corrected (#40) - @stuartsierra
io.pedestal.service.http.body-params/set-content-type now uses correct casing for HTTP headers (#35) - @stuarth

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