feat!: migrate to microgenerator (#29)

See UPGRADING.md for details.

.coveragerc

@@ -14,22 +14,20 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-# Generated by synthtool. DO NOT EDIT!
 [run]
 branch = True
 
 [report]
 fail_under = 100
 show_missing = True
+omit = google/cloud/devtools/cloudtrace/__init__.py
 exclude_lines =
     # Re-enable the standard pragma
     pragma: NO COVER
     # Ignore debug-only repr
     def __repr__
-    # Ignore abstract methods
-    raise NotImplementedError
-omit =
-  */gapic/*.py
-  */proto/*.py
-  */core/*.py
-  */site-packages/*.py
+    # Ignore pkg_resources exceptions.
+    # This is added at the module level as a safeguard for if someone
+    # generates the code and tries to run it without pip installing. This
+    # makes it virtually impossible to test properly.
+    except pkg_resources.DistributionNotFound

README.rst

@@ -56,7 +56,9 @@ Python >= 3.5
 
 Deprecated Python Versions
 ^^^^^^^^^^^^^^^^^^^^^^^^^^
-Python == 2.7. Python 2.7 support will be removed on January 1, 2020.
+Python == 2.7.
+
+The last version of this library compatible with Python 2.7 is google-cloud-trace==0.24.0
 
 
 Mac/Linux
@@ -87,22 +89,6 @@ to `Python Development Environment Setup Guide`_ for Google Cloud Platform.
 .. _Python Development Environment Setup Guide: https://cloud.google.com/python/setup
 
 
-Example Usage
-~~~~~~~~~~~~~
-
-.. code-block:: python
-
-  from google.cloud.trace import trace_service_client
-
-  client = trace_service_client.TraceServiceClient()
-  project_id = 'your-project-123'
-
-  # Iterate over all results
-  for element in client.list_traces(project_id):
-      # process element
-      pass
-
-
 Next Steps
 ~~~~~~~~~~
 

UPGRADING.md

@@ -0,0 +1,162 @@
+# 1.0.0 Migration Guide
+
+The 1.0 release of the `google-cloud-trace` client is a significant upgrade based on a [next-gen code generator](https://github.com/googleapis/gapic-generator-python), and includes substantial interface changes. Existing code written for earlier versions of this library will likely require updates to use this version. This document describes the changes that have been made, and what you need to do to update your usage.
+
+If you experience issues or have questions, please file an [issue](https://github.com/googleapis/python-trace/issues).
+
+## Supported Python Versions
+
+> **WARNING**: Breaking change
+
+The 1.0.0 release requires Python 3.6+.
+
+
+## Handwritten Client Wrapper Removal
+
+The handwritten client wrapper `trace_v1.Client()` and `trace_v2.Client()` have been removed. Please use `TraceServiceClient` directly. The primary diference is that a `project_id` must always be supplied to method calls.
+
+
+```py
+from google.cloud import trace_v1
+
+client = trace_v1.TraceServiceClient()
+```
+
+```py
+from google.cloud import trace_v2
+
+client = trace_v2.TraceServiceClient()
+```
+
+**NOTE**: The following sections identify changes between the previous `TraceServiceClient()` and the current `TraceServiceClient()` (not the handwritten wrapper `Client()`). If you were previously using `Client()`, it may be more helpful to reference the [samples](https://github.com/googleapis/python-trace/tree/master/samples/snippets).
+
+## Method Calls
+
+> **WARNING**: Breaking change
+Methods expect request objects. We provide a script that will convert most common use cases.
+
+* Install the library
+
+```py
+python3 -m pip install google-cloud-trace
+```
+
+* The scripts `fixup_trace_v1_keywords.py` and `fixup_trace_v2_keywords.py` are shipped with the library. The script expects
+an input directory (with the code to convert) and an empty destination directory.
+
+```sh
+$ fixup_trace_v1_keywords.py --input-directory .samples/ --output-directory samples/
+```
+
+**Before:**
+```py
+from google.cloud import trace_v1
+
+client = trace_v1.TraceServiceClient()
+project_id = "my-project"
+response = client.list_traces(project_id)
+```
+
+
+**After:**
+```py
+from google.cloud import trace_v1
+
+client = trace_v1.TraceServiceClient()
+project_id = "my-project"
+response = client.list_traces(project_id=project_id)
+```
+
+### More Details
+
+In `google-cloud-trace<1.0.0`, parameters required by the API were positional parameters and optional parameters were keyword parameters.
+
+**Before:**
+```py
+    def get_trace(
+        self,
+        project_id,
+        trace_id,
+        retry=google.api_core.gapic_v1.method.DEFAULT,
+        timeout=google.api_core.gapic_v1.method.DEFAULT,
+        metadata=None,
+    ):
+```
+
+In the 1.0.0 release, all methods have a single positional parameter `request`. Method docstrings indicate whether a parameter is required or optional.
+
+Some methods have additional keyword only parameters. The available parameters depend on the [`google.api.method_signature` annotation](https://github.com/googleapis/googleapis/blob/master/google/devtools/cloudtrace/v2/tracing.proto#L53) specified by the API producer.
+
+
+**After:**
+```py
+    def get_trace(
+        self,
+        request: trace.GetTraceRequest = None,
+        *,
+        project_id: str = None,
+        trace_id: str = None,
+        retry: retries.Retry = gapic_v1.method.DEFAULT,
+        timeout: float = None,
+        metadata: Sequence[Tuple[str, str]] = (),
+    ) -> trace.Trace:
+```
+
+> **NOTE:** The `request` parameter and flattened keyword parameters for the API are mutually exclusive.
+> Passing both will result in an error.
+
+
+Both of these calls are valid:
+
+```py
+response = client.get_trace(
+    request={
+        "project_id": project_id,
+        "trace_id", trace_id,
+    }
+)
+```
+
+```py
+response = client.get_trace(
+    project_id=project_id,
+    trace_id=trace_id,
+)
+```
+
+This call is invalid because it mixes `request` with a keyword argument `trace_id`. Executing this code
+will result in an error.
+
+```py
+response = client.get_trace(
+    request={
+        "project_id": project_id,
+    },
+    trace_id=trace_id,
+)
+```
+
+
+
+## Enums and Types
+
+
+**WARNING**: Breaking change
+
+The submodules `types` is no longer available on the unversioned path `trace`.
+
+**Before:**
+```py
+from google.cloud import trace
+
+trace_ = trace.types.TraceSpan()
+```
+
+
+**After:**
+```py
+from google.cloud
+
+trace_ = trace_v1.TraceSpan()
+trace_ = trace_v1.types.TraceSpan()
+```

docs/index.rst

@@ -10,18 +10,17 @@ The current version of the API is ``v2``:
 .. toctree::
    :maxdepth: 2
 
-   gapic/v2/api
-   gapic/v2/types
+   trace_v2/services
+   trace_v2/types
 
 Support for the previous API release, ``v1``, is provided for code previously
-written against it. In order to use this release, you will want to import from
-e.g.  ``google.cloud.trace_v1`` in lieu of ``google.cloud.trace_v2``.
+written against it.
 
 .. toctree::
    :maxdepth: 2
 
-   gapic/v1/api
-   gapic/v1/types
+   trace_v1/services
+   trace_v1/types
 
 
 Changelog

docs/trace_v1/services.rst

@@ -0,0 +1,6 @@
+Services for Google Cloud Trace v1 API
+======================================
+
+.. automodule:: google.cloud.trace_v1.services.trace_service
+    :members:
+    :inherited-members:

docs/trace_v1/types.rst

@@ -0,0 +1,5 @@
+Types for Google Cloud Trace v1 API
+===================================
+
+.. automodule:: google.cloud.trace_v1.types
+    :members:

docs/trace_v2/services.rst

@@ -0,0 +1,6 @@
+Services for Google Cloud Trace v2 API
+======================================
+
+.. automodule:: google.cloud.trace_v2.services.trace_service
+    :members:
+    :inherited-members:

docs/trace_v2/types.rst

@@ -0,0 +1,5 @@
+Types for Google Cloud Trace v2 API
+===================================
+
+.. automodule:: google.cloud.trace_v2.types
+    :members: