Added gRPC endpoint and python client

Dockerfile.hpo

@@ -25,7 +25,7 @@ WORKDIR /opt/app
 
 # Install packages needed for python to function correctly
 # Create the non root user, same as the one used in the build phase.
-RUN microdnf install -y python3 \
+RUN microdnf install -y python3 gcc-c++ python3-devel \
     && microdnf update -y \
     && microdnf -y install shadow-utils \
     && adduser -u 1001 -G root -s /usr/sbin/nologin default \
@@ -38,7 +38,7 @@ RUN microdnf install -y python3 \
 USER 1001
 
 # Install optuna to the default user
-RUN python3 -m pip install --user optuna requests scikit-optimize jsonschema
+RUN python3 -m pip install --user optuna requests scikit-optimize jsonschema click grpcio google-api-core
 
 LABEL name="Kruize HPO" \
       vendor="Red Hat" \
@@ -54,5 +54,6 @@ COPY --chown=1001:0 index.html /opt/app/
 
 
 EXPOSE 8085
+EXPOSE 50051
 
 ENTRYPOINT python3 -u src/service.py

requirements.txt

@@ -1,4 +1,6 @@
 optuna
 requests
 scikit-optimize
-jsonschema
+jsonschema
+grpcio
+click

scripts/cluster-helpers.sh

@@ -69,7 +69,7 @@ function docker_start() {
 
 	check_prereq running ${SERVICE_STATUS_DOCKER}
 
-	${CONTAINER_RUNTIME} run -d --name hpo_docker_container -p 8085:8085 ${HPO_CONTAINER_IMAGE} >/dev/null 2>&1
+	${CONTAINER_RUNTIME} run -d --name hpo_docker_container -p 8085:8085 -p 50051:50051 ${HPO_CONTAINER_IMAGE} >/dev/null 2>&1
 	check_err "Unexpected error occured. Service Stopped!"
 
 	echo

src/README.md

@@ -46,3 +46,52 @@ The criteria for setting the experiment status is:
 | `success`         | The experiment runs successfully without any error.                           |
 | `failure`         | The experiment fails due to reason such as OOMKilled.                         |
 | `prune`           | The experiment terminates due to reasons such as insufficient cpu and memory. |
+
+
+## gRPC Client
+
+[`grpc_client.py`](./grpc_client.py) is a command line client that allows users to interact with the gRPC service.
+
+### Usage
+
+```shell
+$ python3 ./grpc_client.py 
+Usage: grpc_client.py [OPTIONS] COMMAND [ARGS]...
+
+  A HPO command line tool to allow interaction with HPO service
+
+Options:
+  --help  Show this message and exit.
+
+Commands:
+  config  Obtain a configuration set for a particular experiment trial
+  count   Return a count of experiments currently running
+  list    List names of all experiments currently running
+  new     Create a new experiment
+  next    Generate next configuration set for running experiment
+  result  Update results for a particular experiment trial
+  show    Show details of running experiment
+
+```
+
+Commands provide interactive input for params or allow users to set params on the command line for scripted use;
+
+e.g.
+
+```shell
+$ python3 ./grpc_client.py new
+ Experiment configuration file path: 
+```
+
+or
+
+```shell
+$ python3 ./grpc_client.py new --file=/tmp/hpo/newExperiment.json
+```
+
+> **_NOTE:_**  The default host and port for the client is `localhost` and `50051`.  If you wish to connect to a remote machine, or via a diferent port, please set the following environment variables, `HPO_HOST` and `HPO_PORT`. 
+> e.g.
+> ```shell
+> $ export HPO_HOST=remoteMachine.com
+> $ export HPO_PORT=9191
+> ```

src/exceptions.py

@@ -0,0 +1,7 @@
+class Error(Exception):
+    """Base class for other exceptions"""
+    pass
+
+class ExperimentNotFoundError(Error):
+    """Raised when the input value is too small"""
+    pass