first commit

agent/internal/grpc/client.go

@@ -0,0 +1,100 @@
+package grpcclient
+
+import (
+	"context"
+	"crypto/tls"
+	"time"
+
+	"github.com/mrhid6/keymanager/agent/internal/grpc/pb"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials"
+	"google.golang.org/grpc/credentials/insecure"
+	"google.golang.org/grpc/encoding"
+)
+
+func init() {
+	encoding.RegisterCodec(JSONCodec{})
+}
+
+type Client struct {
+	conn   *grpc.ClientConn
+	client pb.KeyManagerClient
+}
+
+func New(serverURL string, useTLS bool) (*Client, error) {
+	var dialOpts []grpc.DialOption
+
+	if useTLS {
+		tlsCfg := &tls.Config{
+			InsecureSkipVerify: false,
+		}
+		creds := credentials.NewTLS(tlsCfg)
+		dialOpts = append(dialOpts, grpc.WithTransportCredentials(creds))
+	} else {
+		dialOpts = append(dialOpts, grpc.WithTransportCredentials(insecure.NewCredentials()))
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	conn, err := grpc.DialContext(ctx, serverURL, dialOpts...)
+	if err != nil {
+		return nil, err
+	}
+
+	return &Client{
+		conn:   conn,
+		client: pb.NewKeyManagerClient(conn),
+	}, nil
+}
+
+func (c *Client) Close() error {
+	return c.conn.Close()
+}
+
+func (c *Client) Register(serverID, preRegToken, hostname, ipAddress, osInfo string) (string, error) {
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	resp, err := c.client.Register(ctx, &pb.RegisterRequest{
+		ServerId:    serverID,
+		PreRegToken: preRegToken,
+		Hostname:    hostname,
+		IpAddress:   ipAddress,
+		OsInfo:      osInfo,
+	})
+	if err != nil {
+		return "", err
+	}
+	return resp.AgentToken, nil
+}
+
+func (c *Client) SyncKeys(serverID, agentToken string) ([]string, error) {
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	resp, err := c.client.SyncKeys(ctx, &pb.SyncRequest{
+		ServerId:   serverID,
+		AgentToken: agentToken,
+	})
+	if err != nil {
+		return nil, err
+	}
+	return resp.PublicKeys, nil
+}
+
+func (c *Client) UploadGeneratedKey(serverID, agentToken, publicKey, label string) (string, error) {
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	resp, err := c.client.UploadGeneratedKey(ctx, &pb.UploadKeyRequest{
+		ServerId:   serverID,
+		AgentToken: agentToken,
+		PublicKey:  publicKey,
+		Label:      label,
+	})
+	if err != nil {
+		return "", err
+	}
+	return resp.KeyId, nil
+}