Class: RubyEventStore::Browser::App

Inherits:
Object
  • Object
show all
Defined in:
lib/ruby_event_store/browser/app.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(event_store_locator:, related_streams_query:, host:, root_path:, extensions: [], views_root: nil) ⇒ App

Returns a new instance of App.



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# File 'lib/ruby_event_store/browser/app.rb', line 95

def initialize(event_store_locator:, related_streams_query:, host:, root_path:, extensions: [], views_root: nil)
  @event_store_locator = event_store_locator
  @related_streams_query = related_streams_query
  @extensions = extensions
  @views_root = views_root
  @routing = Urls.from_configuration(host, root_path)
end

Class Method Details

.extension_asset_mappings(extension, index) ⇒ Object 



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# File 'lib/ruby_event_store/browser/app.rb', line 87

def self.extension_asset_mappings(extension, index)
  return {} unless extension.respond_to?(:assets_root)

  Dir
    .glob("**/*", base: extension.assets_root)
    .to_h { |relative_path| ["/extension_assets/#{index}/#{relative_path}", relative_path] }
end

.for(event_store_locator:, host: nil, path: nil, api_url: nil, environment: nil, related_streams_query: DEFAULT_RELATED_STREAMS_QUERY, extensions: [], views_root: nil) ⇒ Object 



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# File 'lib/ruby_event_store/browser/app.rb', line 11

def self.for(
  event_store_locator:,
  host: nil,
  path: nil,
  api_url: nil,
  environment: nil,
  related_streams_query: DEFAULT_RELATED_STREAMS_QUERY,
  extensions: [],
  views_root: nil
)
  warn(<<~WARN) if environment
    Passing :environment to RubyEventStore::Browser::App.for is deprecated.

    This option is no-op, has no effect and will be removed in next major release.
  WARN
  warn(<<~WARN) if host
    Passing :host to RubyEventStore::Browser::App.for is deprecated.

    This option will be removed in next major release.

    Host and mount points are correctly recognized from Rack environment
    and this option is redundant.
  WARN
  warn(<<~WARN) if path
    Passing :path to RubyEventStore::Browser::App.for is deprecated.

    This option will be removed in next major release.

    Host and mount points are correctly recognized from Rack environment
    and this option is redundant.
  WARN
  warn(<<~WARN) if api_url
    Passing :api_url to RubyEventStore::Browser::App.for is deprecated.

    This option is no-op and will be removed in next major release.
  WARN

  Rack::Builder.new do
    use Rack::Static,
        urls:
          %w[
            stimulus-3.2.2.js
            android-chrome-192x192.png
            android-chrome-512x512.png
            apple-touch-icon.png
            favicon.ico
            favicon-16x16.png
            favicon-32x32.png
            mstile-70x70.png
            mstile-144x144.png
            mstile-150x150.png
            mstile-310x150.png
            mstile-310x310.png
            safari-pinned-tab.svg
            ruby_event_store_browser.js
            ruby_event_store_browser.css
          ].map { |f| ["/#{f}", f] }.to_h.merge(
            "/#{BROWSER_JS}"  => "ruby_event_store_browser.js",
            "/#{BROWSER_CSS}" => "ruby_event_store_browser.css",
          ),
        root: "#{__dir__}/../../../public"
    extensions.each_with_index do |extension, index|
      mappings = App.extension_asset_mappings(extension, index)
      use Rack::Static, urls: mappings, root: extension.assets_root unless mappings.empty?
    end
    run App.new(
          event_store_locator: event_store_locator,
          related_streams_query: related_streams_query,
          host: host,
          root_path: path,
          extensions: extensions,
          views_root: views_root,
        )
  end
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/ruby_event_store/browser/app.rb', line 103

def call(env)
  request = Rack::Request.new(env)
  router = Router.new(routing)

  router.add_route("GET", "/") do |_, urls|
    [302, { "location" => urls.stream_url(SERIALIZED_GLOBAL_STREAM_NAME) }, []]
  end

  router.add_route("GET", "/streams/:stream_name") do |params, urls|
    stream_name = params.fetch("stream_name")
    reader = GetEventsFromStream.new(event_store: event_store, stream_name: stream_name, page: params["page"])
    layout.render(
      "streams/show",
      urls: urls,
      stream_name: stream_name,
      title: "Stream #{stream_name}",
      events: reader.events,
      pagination:
        reader.pagination.transform_values { |cursor| urls.stream_page_url(stream_name, cursor, reader.count) },
      related_streams: related_streams_query.call(stream_name),
      extension_links: stream_extension_links(stream_name, urls),
    )
  end

  router.add_route("GET", "/events/:event_id") do |params, urls|
    event = event_store.read.event!(params.fetch("event_id"))
    metadata = format_event_metadata(event)
    parent_event =
      event_store.read.event(event.metadata.fetch(:causation_id)) if event.metadata.key?(:causation_id)

    layout.render(
      "events/show",
      urls: urls,
      event: event,
      title: "Event #{event.event_id}",
      metadata: metadata,
      streams: event_store.streams_of(event.event_id).map(&:name).sort,
      parent_event: parent_event,
      caused_by: event_store.read.stream("$by_causation_id_#{event.event_id}").backward.limit(PAGE_SIZE).to_a,
      extension_links: event_extension_links(event, urls),
    )
  end

  router.add_route("GET", "/swimlane") do |params, urls|
    stream_names, sort = swimlane_params(params)
    reader = GetEventsFromStreams.new(event_store: event_store, stream_names: stream_names, sort: sort)
    missing_stream_names = reader.missing_stream_names
    stream_names -= missing_stream_names
    layout.render(
      "swimlane/show",
      urls: urls,
      stream_names: stream_names,
      missing_stream_names: missing_stream_names,
      title: "Swimlane #{stream_names.join(', ')}",
      events: reader.events,
      sort: sort,
      more_url: (urls.swimlane_more_url(stream_names, reader.next_cursor, sort) if reader.more?),
    )
  end

  router.add_route("GET", "/swimlane/more") do |params, urls|
    stream_names, sort = swimlane_params(params)
    reader =
      GetEventsFromStreams.new(
        event_store: event_store,
        stream_names: stream_names,
        cursor: params["cursor"],
        sort: sort,
      )
    json(
      html:
        layout.render_partial("swimlane/_rows", urls: urls, stream_names: stream_names, events: reader.events, sort: sort),
      more_url: (urls.swimlane_more_url(stream_names, reader.next_cursor, sort) if reader.more?),
    )
  end

  extensions
    .select { |extension| extension.respond_to?(:register_routes) }
    .each { |extension| extension.register_routes(router, extension_context(extension)) }

  router.handle(request)
rescue EventNotFound
  layout.not_found(routing.with_request(request), message: "There's no event with given ID")
rescue Router::NoMatch
  layout.not_found(routing.with_request(request), message: "Page not found")
end