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gRPC Observability Example
=====================
The examples here demonstrate how to setup gRPC Python Observability with Opentelemetry.
More details about how to use gRPC Python Observability APIs can be found in [OpenTelemetry Metrics gRFC](https://github.com/grpc/proposal/blob/master/A66-otel-stats.md#opentelemetry-metrics).
### Install Requirements
1. Navigate to this directory:
```sh
cd examples/python/observability
```
2. Install requirements:
```sh
python -m pip install -r requirements.txt
```
### Run the Server
Start the server:
```sh
python -m observability_greeter_server
```
### Run the Client
Note that client should start within 10 seconds of the server becoming active.
```sh
python -m observability_greeter_client
```
### Verifying Metrics
The example will print a list of metric names collected.
Server Side:
```
Server started, listening on 50051
Metrics exported on Server side:
grpc.server.call.started
grpc.server.call.sent_total_compressed_message_size
grpc.server.call.rcvd_total_compressed_message_size
grpc.server.call.duration
```
Client Side:
```
Greeter client received: Hello You
Metrics exported on client side:
grpc.client.call.duration
grpc.client.attempt.started
grpc.client.attempt.sent_total_compressed_message_size
grpc.client.attempt.rcvd_total_compressed_message_size
grpc.client.attempt.duration
```