asteris-llc/converge

// Copyright © 2016 Asteris, LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package rpc

import (
    "context"

    "google.golang.org/grpc"

    "github.com/asteris-llc/converge/rpc/pb"
    "github.com/golang/protobuf/ptypes/empty"
    "github.com/pkg/errors"
)

// NewInfoClient returns a client for a server that implements Info
func NewInfoClient(ctx context.Context, addr string, security *Security) (*InfoClient, error) {
    opts, err := security.Client()
    if err != nil {
        return nil, errors.Wrap(err, "could not get client options")
    }

    cc, err := grpc.DialContext(ctx, addr, opts...)
    if err != nil {
        return nil, err
    }

    return &InfoClient{pb.NewInfoClient(cc)}, nil
}

// InfoClient is a wrapper around a pb.InfoClient
type InfoClient struct {
    client pb.InfoClient
}

// Ping gets a ping response from the server
func (i *InfoClient) Ping(ctx context.Context) error {
    _, err := i.client.Ping(ctx, new(empty.Empty))
    return err
}