Add support for ip pools, inline images

sparkpost/transmissions.py

@@ -40,6 +40,7 @@ def _translate_keys(self, **kwargs):
         model['options']['transactional'] = kwargs.get('transactional')
         model['options']['sandbox'] = kwargs.get('use_sandbox')
         model['options']['skip_suppression'] = kwargs.get('skip_suppression')
+        model['options']['ip_pool'] = kwargs.get('ip_pool')
         model['options']['inline_css'] = kwargs.get('inline_css')
 
         model['content']['use_draft_template'] = \
@@ -77,6 +78,10 @@ def _translate_keys(self, **kwargs):
         model['content']['attachments'] = self._extract_attachments(
             attachments)
 
+        inline_images = kwargs.get('inline_images', [])
+        model['content']['inline_images'] = self._extract_attachments(
+            inline_images)
+
         return model
 
     def _format_copies(self, recipients, copies):
@@ -176,6 +181,26 @@ def send(self, **kwargs):
                     name='document.pdf',
                     filename='/full/path/to/document.pdf'
                 )
+        :param inline_images: List of dicts. For example:
+
+            .. code-block:: python
+
+                dict(
+                    type='image/png',
+                    name='imageCID',
+                    data='base64 encoded string'
+                )
+
+            Replace `data` with `filename` if you want the library to perform
+            the base64 conversion. For example:
+
+            .. code-block:: python
+
+                dict(
+                    type='image/png',
+                    name='imageCID',
+                    filename='/full/path/to/image.png'
+                )
 
         :param str start_time: Delay generation of messages until this
             datetime. Format YYYY-MM-DDTHH:MM:SS+-HH:MM. Example:
@@ -192,6 +217,8 @@ def send(self, **kwargs):
         :param bool skip_suppression: Whether or not to ignore customer
             suppression rules, for this transmission only. Only applicable if
             your configuration supports this parameter. (SparkPost Elite only)
+        :param str ip_pool: The name of a dedicated IP pool associated with
+            your account
         :param bool inline_css: Whether or not to perform CSS inlining
         :param dict custom_headers: Used to set any headers associated with
             transmission

test/test_transmissions.py

@@ -171,6 +171,48 @@ def test_success_send_with_attachments():
         os.unlink(temp_file_path)
 
 
+@responses.activate
+def test_success_send_with_inline_images():
+    current_dir = os.path.abspath(os.path.dirname(__file__))
+    image_path = os.path.join(current_dir, 'assets', 'sparkpostdev.png')
+
+    with open(image_path, "rb") as image:
+        encoded_image = base64.b64encode(image.read()).decode("ascii")
+
+    responses.add(
+        responses.POST,
+        'https://api.sparkpost.com/api/v1/transmissions',
+        status=200,
+        content_type='application/json',
+        body='{"results": "yay"}'
+    )
+    sp = SparkPost('fake-key')
+
+    image_data = {
+        "name": "sparkpostdev",
+        "type": "image/png",
+        "filename": image_path
+    }
+    results = sp.transmission.send(inline_images=[image_data])
+    request_params = json.loads(responses.calls[0].request.body)
+    content = request_params["content"]["inline_images"][0]["data"]
+
+    assert encoded_image == content
+    assert results == 'yay'
+
+    image_data = {
+        "name": "sparkpostdev",
+        "type": "image/png",
+        "data": encoded_image
+    }
+    results = sp.transmission.send(inline_images=[image_data])
+    request_params = json.loads(responses.calls[1].request.body)
+    content = request_params["content"]["inline_images"][0]["data"]
+
+    assert content == encoded_image
+    assert results == 'yay'
+
+
 @responses.activate
 def test_fail_send():
     responses.add(