Fix propagator example (#174)

Author: aabmass

docs/examples/cloud_trace_propagator/README.rst

@@ -19,9 +19,11 @@ To use this feature you first need to:
 
     pip install opentelemetry-api \
       opentelemetry-sdk \
+      opentelemetry-instrumentation-flask \
+      opentelemetry-instrumentation-requests \
       opentelemetry-exporter-gcp-trace \
-      opentelemetry-exporter-gcp-monitoring \
-      opentelemetry-propagator-gcp
+      opentelemetry-propagator-gcp \
+      Flask
 
 * Create a server that uses the Cloud Trace header
 

docs/examples/cloud_trace_propagator/client.py

@@ -19,8 +19,8 @@
 from opentelemetry.exporter.cloud_trace import CloudTraceSpanExporter
 from opentelemetry.propagate import set_global_textmap
 from opentelemetry.sdk.trace import TracerProvider
-from opentelemetry.sdk.trace.export import SimpleSpanProcessor
-from opentelemetry.tools.cloud_trace_propagator import (
+from opentelemetry.sdk.trace.export import BatchSpanProcessor
+from opentelemetry.propagators.cloud_trace_propagator import (
     CloudTraceFormatPropagator,
 )
 
@@ -30,7 +30,7 @@
 # Tracer boilerplate
 trace.set_tracer_provider(TracerProvider())
 trace.get_tracer_provider().add_span_processor(
-    SimpleSpanProcessor(CloudTraceSpanExporter())
+    BatchSpanProcessor(CloudTraceSpanExporter())
 )
 
 # Using the X-Cloud-Trace-Context header

docs/examples/cloud_trace_propagator/server.py

@@ -13,21 +13,22 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import opentelemetry.ext.requests
+from opentelemetry.instrumentation.requests import RequestsInstrumentor
+from opentelemetry.instrumentation.flask import FlaskInstrumentor
 from opentelemetry import trace
 from opentelemetry.exporter.cloud_trace import CloudTraceSpanExporter
 from opentelemetry.instrumentation.flask import FlaskInstrumentor
 from opentelemetry.propagate import set_global_textmap
 from opentelemetry.sdk.trace import TracerProvider
-from opentelemetry.sdk.trace.export import SimpleSpanProcessor
+from opentelemetry.sdk.trace.export import BatchSpanProcessor
 from opentelemetry.propagators.cloud_trace_propagator import (
     CloudTraceFormatPropagator,
 )
 
 from flask import Flask
 
 # Instrumenting requests
-opentelemetry.ext.requests.RequestsInstrumentor().instrument()
+RequestsInstrumentor().instrument()
 
 # Instrumenting flask
 app = Flask(__name__)
@@ -36,7 +37,7 @@
 # Tracer boilerplate
 trace.set_tracer_provider(TracerProvider())
 trace.get_tracer_provider().add_span_processor(
-    SimpleSpanProcessor(CloudTraceSpanExporter())
+    BatchSpanProcessor(CloudTraceSpanExporter())
 )
 
 # Using the X-Cloud-Trace-Context header