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Manage your geoserver configuration similar to ActiveRecord migrations

License: MIT License

Ruby 94.02% JavaScript 0.58% CSS 0.66% HTML 4.73%

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geoserver_migrations's Issues

Add more "editing capabilities"

update a style with a new/adapted SLD
change the used style for a layer
... ?

Support different environments?

At the moment we have a rails project which we can deploy for different clients, and obviously the geoserver environment also is not identical. The rails project we solve using configuration files, how do we solve this for the geoserver-migrations?

Ideas:

in a migration file declare a "platform" where the migration should be run. No explicit platform means it should always be run?
when doing rails g geoserver_migrations:migrate --platform=platform_name it will run all default + the specific migrations for that platform, and will assume all current migrations for other platforms as "run"

E.g. something like

class AddTrees < GeoserverMigrations::Migration

  platform "your-platform-name" 

  def run
    heli_trees_sld = <<-SLD.strip_heredoc
      <?xml version="1.0" encoding="UTF-8"?><sld:StyledLayerDescriptor xmlns="http://www.opengis.net/sld" xmlns:sld="http://www.opengis.net/sld" xmlns:gml="http://www.opengis.net/gml" xmlns:ogc="http://www.opengis.net/ogc" version="1.0.0">
        <sld:NamedLayer>
             ... snipped for legibility
        </sld:NamedLayer>
      </sld:StyledLayerDescriptor>
    SLD

    create_layer :heli_trees do
      sld heli_trees_sld
      feature_name :topo_features
    end

  end

end

Additionally I can imagine adding the plural and singular form both, so something like

platform "your-platform"

platforms "your-platform1", "your-platform2"

(not sure if we should have square-brackets there or not?)

When a migration fails, attempt to rollback changes

The DSL does collect a list of actions to generate, so when something fails halfway through, we should be able to pretty easily undo those changes.

E.g. delete styles and layers already created (in reverse order), ignoring errors of course because one of the last operations caused an error (e.g. the SLD is not correct or valid?).

Use/support CSS-styline (instead of/aside of SLD)

If you have installed the CSS styling extension, can we then use the API to create such layers?

That would be awesome since SLD styles are so verbose.

Allow more complicated SLD building?

I have now very simple SLD helpers which allow to build a SLD with a single polygon/icon/line and a filter. Something like the code in spec/fixtures/migrate_examples/migrate_with_icon/06_sld_helpers_tester.rb

class SldHelpersTester < GeoserverMigrations::Migration

  def run

    add_resource "deer.png"

    create_layer :deers do
      feature_name :deers
      icon_style_with_label "Deers", "deer.png"
    end

    create_layer :alt_deers do
      feature_name :deers
      icon_style_with_label "ALT DEERS", "deer_with_hart.png", display_label: "Lieve hertjes", filter: {"active" => "true"}, max_scale_denominator: 15000
    end

    create_layer :moose do
      feature_name :moose
      polygon_style "MOOSE", display_label: "ELANDEN", max_scale_denominator: 15000
    end

    create_layer :alt_moose do
      feature_name :moose
      polygon_style "ALT MOOSE", display_label: "DOORZICHTIGE ELANDEN", max_scale_denominator: 15000, fill_opacity: "0.4"
    end

    create_layer :mice do
      feature_name :mice
      line_style "MICE", display_label: "MUIZEKES", max_scale_denominator: 21000, stroke_colour: "#80ff00", stroke_width: 8
    end

    create_layer :toads do
      feature_name :toads
      polygon_style "Toads", display_label: "Padden", max_scale_denominator: 25000, no_fill: true, stroke_colour: "#00ff00", stroke_width: 4, stroke_dasharray: "10.0 10.0"
    end

    
    create_layer :blackbirds do
      feature_name :blackbirds
      line_style "Blackbirds", display_label: "Raven", stroke_colour: "#00ff00", stroke_width: 3, filter: {"label" => "BLACK", "active" => "TRUE"}
    end

  end

end

This works fine if the SLD's remain as simple, but how do we handle a more difficult example, where we have to colour e.g. a line, based on an attribute?

E.g. something like

       line_style "Blackbirds", rules: [
               {display_label: "Zwarte Raven", stroke_colour: "#00ff00", stroke_width: 3, filter: {"label" => "BLACK", "active" => "TRUE"}},
               {display_label: "Grijze Raven", stroke_colour: "#ffff00", stroke_width: 3, filter: {"label" => "GREY", "active" => "TRUE"}},
               {display_label: "Rode Raven", stroke_colour: "#00ffff", stroke_width: 4, filter: {"label" => "RED", "active" => "TRUE"}},
        ]

So we can add different rules? Or should we still switch to a more dsl-y approach

    sld "blackbirds" do 
       rule "Zwarte Raven" do 
         line_style "Blackbirds", display_label: "Zwarte Raven", stroke_colour: "#00ff00", stroke_width: 3, filter: {"label" => "BLACK", "active" => "TRUE"}
       end 
       rule "RODE Raven" do 
         line_style "Blackbirds", display_label: "Rode Raven", stroke_colour: "#00ff00", stroke_width: 3, filter: {"label" => "RED", "active" => "TRUE"}
       end 
    end

I can imagine rules could also be name-less? Not sure why they would have a name and a display_label ?

Of course, much of this would simply go away if we support css-styles?

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