Move all microservices to Symfony

[whikloj]

GitHub Issue: Islandora/documentation#1224

What does this Pull Request do?

Replaces the deprecated Silex framework with Symfony 4.4 (LTS) for all the other microservices (Houdini which was 4.3 is also now 4.4)

This PR relies on Islandora/Crayfish-Commons#49

As this is not backwards compatible with Crayfish 2.0.0 this PR is against the new 3.x branch and will be the first commit for version 3.0.0 of Crayfish

I'm making this a draft PR as there are still README changes to come also it will need the Crayfish-Commons PR merged and a release cut so this PR can be updated to reference the correct semantic version.

EDIT: Readme changes added, the readmes were very out-of-date.

What's new?

This should have no functional effect on the microservices.

How should this be tested?

Pull this branch in to your setup and install it. You will need to migrate your various settings.

There is an islandora-playbook draft PR to setup using this PR here:
Islandora-Devops/islandora-playbook#207

Interested parties

Tag (@ mention) interested parties or, if unsure, @Islandora/8-x-committers

[whikloj]

Quick question, I did not add the WebServerBundle to all the microservices so you can't easily run a test instance of a microservice. Does anyone use that regularly with Silex and want it as an option?

[whikloj]

Added upgrade instructions to each individual service for moving configuration from version 2.x to 3.0.0

[adam-vessey]

Various comments:

• Some misc inconsistencies in dependencies/lock files (symfony.lock? Not sure if/how its actually used...)
• bin/console stuff... is it actually necessary? Not seeing any reference to it in any of the readmes... I guess the composer.json thing has a couple calls using it?

[codecov]

Codecov Report

Base: 76.74% // Head: 76.56% // Decreases project coverage by -0.18% ⚠️

Coverage data is based on head (1f0a732) compared to base (09a62a4).
Patch has no changes to coverable lines.

Additional details and impacted files

@@             Coverage Diff              @@
##                3.x     #133      +/-   ##
============================================
- Coverage     76.74%   76.56%   -0.19%     
+ Complexity      161      155       -6     
============================================
  Files             6        6              
  Lines           658      576      -82     
============================================
- Hits            505      441      -64     
+ Misses          153      135      -18     

Impacted Files	Coverage Δ
...ild_dir/Recast/src/Controller/RecastController.php	53.62% <0.00%> (-1.58%)	⬇️
...dir/Milliner/src/Controller/MillinerController.php	95.06% <0.00%> (-0.35%)	⬇️
...d_dir/Homarus/src/Controller/HomarusController.php	100.00% <0.00%> (ø)
...d_dir/Houdini/src/Controller/HoudiniController.php	100.00% <0.00%> (ø)
...r/Hypercube/src/Controller/HypercubeController.php	100.00% <0.00%> (ø)
build_dir/Milliner/src/Service/MillinerService.php	71.24% <0.00%> (+0.65%)	⬆️

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[whikloj]

I updated Islandora-Devops/islandora-playbook#207 so it would still build with the this PR if you want to try it out.

[ruebot]

I've been using this in my dev/stage/prod builds for a few months now, and everything seems fine. Set it all up in conjunction with your Alpaca 2.0.0 work.

[whikloj]

@Islandora/committers bump

[whikloj]

Thank you @seth-shaw-asu 🙇