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Dropbox API client to deal with directory listing.

Guilherme J. Tramontina 11 years ago
parent
9dea1fb864
commit
70bb48b295
2 changed files with 102 additions and 2 deletions
Show Diff Stats
  1. 20 2
      app/models/agents/dropbox_watch_agent.rb
  2. 82 0
      spec/models/agents/dropbox_watch_agent_spec.rb

+ 20 - 2
app/models/agents/dropbox_watch_agent.rb
View File 

@@ -40,7 +40,6 @@ module Agents
40 40 
     def check
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       api = DropboxAPI.new(interpolated[:access_token])
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       current_contents = api.dir(interpolated[:dir_to_watch])
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-
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       diff = DropboxDirDiff.new(previous_contents, current_contents)
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       create_event(payload: diff.to_hash) unless previous_contents.nil? || diff.empty?
46 45 
 
@@ -66,13 +65,32 @@ module Agents
66 65 
     # == Auxiliary classes ==
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     class DropboxAPI
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+      class ResourceNotFound < RuntimeError; end
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+
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+      include HTTParty
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+      base_uri 'https://api.dropbox.com/1'
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+
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       def initialize(access_token)
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+        @options = { query: { access_token: access_token } }
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+      end
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+
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+      def dir(to_watch)
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+        options = @options.deep_merge({ query: { list: true } })
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+        response = self.class.get("/metadata/auto#{to_watch}", options)
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+        raise ResourceNotFound.new(to_watch) if response.not_found?
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+        JSON.parse(response)['contents'].map { |entry| slice_json(entry, :path, :rev, :modified) }
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+      end
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+
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+      private
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+
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+      def slice_json(json, *keys)
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+        keys.each_with_object({}){|key, hash| hash[key] = json[key.to_s]}
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       end
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     end
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     class DropboxDirDiff
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       def initialize(previous, current)
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-        @previous, @current = [previous, current]
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+        @previous, @current = [previous || [], current || []]
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       end
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       def empty?

+ 82 - 0
spec/models/agents/dropbox_watch_agent_spec.rb
View File 

@@ -154,6 +154,88 @@ describe Agents::DropboxWatchAgent do
154 154 
         expect(diff_hash[:updated]).to eq [ { path: '1.json', rev: '2' } ]
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       end
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+      context 'when the previous value is not defined' do
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+        it 'considers all additions' do
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+          diff_hash = Agents::DropboxWatchAgent::DropboxDirDiff.new(nil, current).to_hash
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+          expect(diff_hash[:added]).to eq current
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+          expect(diff_hash[:removed]).to eq []
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+          expect(diff_hash[:updated]).to eq []
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+        end
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+      end
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+
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+      context 'when the current value is not defined' do
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+        it 'considers all removals' do
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+          diff_hash = Agents::DropboxWatchAgent::DropboxDirDiff.new(previous, nil).to_hash
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+          expect(diff_hash[:added]).to eq []
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+          expect(diff_hash[:removed]).to eq previous
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+          expect(diff_hash[:updated]).to eq []
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+        end
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+      end
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+    end
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+  end
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+
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+  describe Agents::DropboxWatchAgent::DropboxAPI do
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+    let(:dir_to_watch) { '/my/dropbox/dir' }
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+    let(:access_token) { '70k3n' }
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+    let(:api_url) { "https://api.dropbox.com/1/metadata/auto#{dir_to_watch}?access_token=#{access_token}&list=true" }
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+
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+    describe '#dir' do
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+
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+      context 'when the provided path exists' do
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+        before do
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+          stub_request(:get, api_url).to_return(body: JSON.dump({
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+            contents: [
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+                {
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+                    bytes: 0,
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+                    icon: "folder",
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+                    is_dir: true,
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+                    modified: "Mon, 11 Mar 2013 15:41:44 +0000",
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+                    path: "#{dir_to_watch}/1.json",
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+                    rev: "1",
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+                    revision: 14743,
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+                    root: "dropbox",
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+                    size: "0 bytes",
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+                    thumb_exists: false
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+                },
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+                {
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+                    bytes: 0,
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+                    icon: "folder",
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+                    is_dir: true,
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+                    modified: "Mon, 12 Mar 2013 15:41:44 +0000",
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+                    path: "#{dir_to_watch}/2.json",
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+                    rev: "4",
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+                    revision: 113022,
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+                    root: "dropbox",
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+                    size: "0 bytes",
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+                    thumb_exists: false
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+                }
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+            ],
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+            some: "other",
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+            things: "we",
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+            dont: "need"
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+          }))
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+        end
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+
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+        it 'trims down the attributes of the response to our needs' do
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+          dir_list = Agents::DropboxWatchAgent::DropboxAPI.new(access_token).dir(dir_to_watch)
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+          expect(dir_list).to eq [
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+            { path: "#{dir_to_watch}/1.json", rev: '1', modified: 'Mon, 11 Mar 2013 15:41:44 +0000' },
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+            { path: "#{dir_to_watch}/2.json", rev: '4', modified: 'Mon, 12 Mar 2013 15:41:44 +0000' }
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+          ]
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+        end
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+      end
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+
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+      context 'when the provided path does not exist' do
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+        before { stub_request(:get, api_url).to_return(status: 404, body: '{"error": "Not Found"}') }
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+
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+        it 'raises a ResourceNotFound error' do
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+          expect {
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+            Agents::DropboxWatchAgent::DropboxAPI.new(access_token).dir(dir_to_watch)
234 
+          }.to raise_error(Agents::DropboxWatchAgent::DropboxAPI::ResourceNotFound, dir_to_watch)
235 
+        end
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+      end
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+
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     end
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+
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   end
159 241 
 end