Class: Logster::Middleware::Viewer

Inherits:
Object
  • Object
show all
Defined in:
lib/logster/middleware/viewer.rb

Constant Summary collapse

PATH_INFO = 
"PATH_INFO".freeze
SCRIPT_NAME = 
"SCRIPT_NAME".freeze
REQUEST_METHOD = 
"REQUEST_METHOD".freeze

Instance Method Summary collapse

Constructor Details

#initialize(app) ⇒ Viewer

Returns a new instance of Viewer.



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# File 'lib/logster/middleware/viewer.rb', line 12

def initialize(app)
  @app = app

  @logs_path = Logster.config.subdirectory
  @path_regex = Regexp.new("^(#{@logs_path}$)|^(#{@logs_path}(/.*))$")
  (@store = Logster.store) || raise(ArgumentError.new("store"))

  @assets_path = File.expand_path("../../../../assets", __FILE__)
  @fileserver = Rack::Files.new(@assets_path)
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/logster/middleware/viewer.rb', line 23

def call(env)
  path = env[PATH_INFO]
  script_name = env[SCRIPT_NAME]

  path = script_name + path if script_name && script_name.length > 0

  if resource = resolve_path(path)
    if resource =~
         /\.ico$|\.js$|\.png|\.handlebars$|\.css$|\.woff$|\.ttf$|\.woff2$|\.svg$|\.otf$|\.eot$/
      serve_file(env, resource)
    elsif resource.start_with?("/messages.json") && env[REQUEST_METHOD] == "POST"
      serve_messages(Rack::Request.new(env))
    elsif resource =~ %r{/message/([0-9a-f]+)$}
      return method_not_allowed("DELETE") if env[REQUEST_METHOD] != "DELETE"

      key = $1
      message = Logster.store.get(key)
      return 404, {}, ["Message not found"] unless message

      Logster.store.delete(message)
      [301, { "Location" => "#{@logs_path}/" }, []]
    elsif resource =~ %r{/(un)?protect/([0-9a-f]+)$}
      off = $1 == "un"
      key = $2

      message = Logster.store.get(key)
      return 404, {}, ["Message not found"] unless message

      if off
        if Logster.store.unprotect(key)
          [301, { "Location" => "#{@logs_path}/show/#{key}?protected=false" }, []]
        else
          [500, {}, ["Failed"]]
        end
      else
        if Logster.store.protect(key)
          [301, { "Location" => "#{@logs_path}/show/#{key}?protected=true" }, []]
        else
          [500, {}, ["Failed"]]
        end
      end
    elsif resource =~ %r{/solve/([0-9a-f]+)$}
      key = $1

      message = Logster.store.get(key)
      return 404, {}, ["Message not found"] unless message

      Logster.store.solve(key)

      [301, { "Location" => "#{@logs_path}" }, []]
    elsif resource =~ %r{/clear$}
      return method_not_allowed("POST") if env[REQUEST_METHOD] != "POST"
      Logster.store.clear
      [200, {}, ["Messages cleared"]]
    elsif resource =~ %r{/show/([0-9a-f]+)(\.json)?$}
      key = $1
      json = $2 == ".json"

      message = Logster.store.get(key)
      return 404, {}, ["Message not found"] unless message

      if json
        [200, { "content-type" => "application/json; charset=utf-8" }, [message.to_json]]
      else
        preload = { "/show/#{key}" => message }
        js_app(preload)
      end
    elsif resource =~ %r{/settings(\.json)?$}
      json = $1 == ".json"
      if json
        ignore_count = Logster.store.get_all_ignore_count
        suppression = []

        Logster.store.ignore&.each do |pattern|
          string_pattern = Regexp === pattern ? pattern.inspect : pattern.to_s
          count = ignore_count[string_pattern] || 0
          suppression << { value: string_pattern, count: count, hard: true }
        end

        Logster::SuppressionPattern
          .find_all(raw: true)
          .each do |pattern|
            count = ignore_count[pattern] || 0
            suppression << { value: pattern, count: count }
          end

        grouping =
          Logster::GroupingPattern.find_all(raw: true).map { |pattern| { value: pattern } }
        [
          200,
          { "content-type" => "application/json; charset=utf-8" },
          [JSON.generate(suppression: suppression, grouping: grouping)],
        ]
      else
        js_app
      end
    elsif resource =~ %r{/patterns/([a-zA-Z0-9_]+)\.json$}
      unless Logster.config.enable_custom_patterns_via_ui
        return(
          not_allowed(
            "Custom patterns via the UI is disabled. You can enable it by committing this line to your app source code:\nLogster.config.enable_custom_patterns_via_ui = true",
          )
        )
      end

      set_name = $1
      req = Rack::Request.new(env)
      return method_not_allowed(%w[POST PUT DELETE]) if req.request_method == "GET"

      update_patterns(set_name, req)
    elsif resource == "/reset-count.json"
      req = Rack::Request.new(env)
      return method_not_allowed("PUT") if req.request_method != "PUT"
      pattern = nil
      if [true, "true"].include?(req.params["hard"])
        pattern =
          Logster.store.ignore.find do |patt|
            str = Regexp === patt ? patt.inspect : patt.to_s
            str == req.params["pattern"]
          end
      else
        pattern =
          Logster::SuppressionPattern
            .find_all(raw: true)
            .find { |patt| patt == req.params["pattern"] }
      end
      return not_found("Pattern not found") unless pattern
      pattern = Regexp === pattern ? pattern.inspect : pattern.to_s
      Logster.store.remove_ignore_count(pattern)
      [200, {}, ["OK"]]
    elsif resource == "/"
      js_app
    elsif resource =~ %r{/fetch-env/([0-9a-f]+)\.json$}
      key = $1
      env = Logster.store.get_env(key)
      if env
        [200, { "content-type" => "application/json; charset=utf-8" }, [JSON.generate(env)]]
      else
        not_found
      end
    elsif resource == "/solve-group"
      return not_allowed unless Logster.config.enable_custom_patterns_via_ui
      req = Rack::Request.new(env)
      return method_not_allowed("POST") if req.request_method != "POST"
      group =
        Logster.store.find_pattern_groups { |patt| patt.inspect == req.params["regex"] }.first
      return not_found("No such pattern group exists") if !group
      group.messages_keys.each { |k| Logster.store.solve(k) }
      [200, {}, []]
    elsif resource == "/development-preload.json" && ENV["LOGSTER_ENV"] == "development"
      [
        200,
        { "content-type" => "application/json; charset=utf-8" },
        [JSON.generate(preloaded_data)],
      ]
    else
      not_found
    end
  else
    @app.call(env)
  end
end