Add info about interacting with the docker solution & configure grafana data sources automatically

TrafficCapture/dockerSolution/README.md

@@ -14,6 +14,32 @@ While in the TrafficCapture directory, run the following command:
 
 `./gradlew :dockerSolution:composeUp`
 
+### Interacting with the Docker Solution
+
+A sample source cluster (running Elasticsearch 7.10) is set up with the Capture Proxy running in front of it. To route
+calls through the Capture Proxy, send requests to `localhost:9200` with the default credentials (admin, admin), e.g.:
+```sh
+curl --insecure https://localhost:9200/_cat/indices -u 'admin:admin'
+```
+
+You can send the same calls to the source cluster while bypassing the Capture Proxy (calls will not be relayed to the
+target cluster) via `localhost:19200`, and to the target cluster directly at `localhost:29200`.
+
+For sample data that exercises various endpoints with a range of datatypes, you can `ssh` into the Migration Console
+(`docker exec -i -t $(docker ps -aqf "ancestor=migrations/migration_console:latest") bash` or via the Docker console)
+and run `./runTestBenchmarks.sh`. By default, this runs four workloads from
+[Opensearch-Benchmark](https://github.com/opensearch-project/opensearch-benchmark) against the Capture Proxy endpoint
+(9200). The Migration Console contains other utility functions (`./catIndices.sh`, `kafka-tools`, etc.) to interact
+with the various containers of the solution.
+
+You can also access the metrics generated by the solution in Grafana. While the solution is running, go to
+[http://localhost:3000](http://localhost:3000/) and enter the default credentials (admin, admin). Connections to
+Jaeger and Prometheus are automatically provisioned (see them under `Connections->Data sources`), so you can go
+directly to `Explore` and define a query using the supplied data from either data source.
+
+Traces for the capture proxy and replayer are available via Jaeger at [http://localhost:16686](http://localhost:16686).
+
+
 ### Running with different telemetry flavors.
 
 By default, composeUp will run an otel-collector that exports instrumentation to other local containers within the

TrafficCapture/dockerSolution/src/main/docker/docker-compose.yml

@@ -35,6 +35,7 @@ services:
       - "3000:3000"
     volumes:
       - ./grafana_data:/var/lib/grafana
+      - ./grafana_datasources.yaml:/usr/share/grafana/conf/provisioning/datasources/datasources.yaml
     environment:
       - GF_SECURITY_ADMIN_PASSWORD=admin
     depends_on:

TrafficCapture/dockerSolution/src/main/docker/grafana_datasources.yaml

@@ -0,0 +1,22 @@
+apiVersion: 1
+datasources:
+  - name: Jaeger
+    type: jaeger
+    url: http://jaeger:16686
+    basicAuth: false
+    isDefault: false
+    readOnly: false
+    jsonData: {}
+  - name: Prometheus
+    type: prometheus
+    url: http://prometheus:9090
+    access: proxy
+    basicAuth: false
+    isDefault: true
+    jsonData:
+      httpMethod: POST
+      prometheusType: Prometheus
+      exemplarTraceIdDestinations:
+        - name: trace_id
+          urlDisplayLabel: Jaeger
+    readOnly: false