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Adding internal healthcheck command. #1590

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Adding internal healthcheck command. #1590

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38 changes: 38 additions & 0 deletions cmd/healthcheck.go
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Original file line number Diff line number Diff line change
@@ -0,0 +1,38 @@
package main

import (
"context"
"fmt"

"github.com/crazy-max/diun/v4/pb"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials/insecure"
)

// HealthcheckCmd holds healthcheck command
type HealthcheckerCmd struct {
Test HealthcheckCmd `cmd:"" help:"Run a healthcheck."`
}

// HealthcheckCmd holds healthcheck test command
type HealthcheckCmd struct {
GRPCAuthority string `name:"grpc-authority" default:"127.0.0.1:42286" help:"Link to Diun gRPC server."`
}

func (s *HealthcheckCmd) Run(_ *Context) error {
conn, err := grpc.NewClient(s.GRPCAuthority, grpc.WithTransportCredentials(insecure.NewCredentials()))
if err != nil {
return err
}
defer conn.Close()

healthcheckSvc := pb.NewHealthcheckServiceClient(conn)

nt, err := healthcheckSvc.Healthcheck(context.Background(), &pb.HealthcheckRequest{})
if err != nil {
return err
}

fmt.Println(nt.Message)
return nil
}
9 changes: 5 additions & 4 deletions cmd/main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -15,10 +15,11 @@ import (
var (
version = "dev"
cli struct {
Version kong.VersionFlag `name:"version" help:"Print version information."`
Serve ServeCmd `cmd:"" help:"Starts Diun server."`
Image ImageCmd `cmd:"" help:"Manage image manifests."`
Notif NotifCmd `cmd:"" help:"Manage notifications."`
Version kong.VersionFlag `name:"version" help:"Print version information."`
Serve ServeCmd `cmd:"" help:"Starts Diun server."`
Image ImageCmd `cmd:"" help:"Manage image manifests."`
Notif NotifCmd `cmd:"" help:"Manage notifications."`
Healthcheck HealthcheckerCmd `cmd:"" help:"Verify that Diun is running."`
}
)

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2 changes: 2 additions & 0 deletions internal/grpc/client.go
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,7 @@ type Client struct {
notif *notif.Client
pb.UnimplementedImageServiceServer
pb.UnimplementedNotifServiceServer
pb.UnimplementedHealthcheckServiceServer
}

// New creates a new grpc instance
Expand All @@ -36,6 +37,7 @@ func New(authority string, db *db.Client, notif *notif.Client) (*Client, error)
c.server = grpc.NewServer()
pb.RegisterImageServiceServer(c.server, c)
pb.RegisterNotifServiceServer(c.server, c)
pb.RegisterHealthcheckServiceServer(c.server, c)

return c, nil
}
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13 changes: 13 additions & 0 deletions internal/grpc/healthcheck.go
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Original file line number Diff line number Diff line change
@@ -0,0 +1,13 @@
package grpc

import (
"context"

"github.com/crazy-max/diun/v4/pb"
)

func (c *Client) Healthcheck(_ context.Context, _ *pb.HealthcheckRequest) (*pb.HealthcheckResponse, error) {
return &pb.HealthcheckResponse{
Message: "Diun is running",
}, nil
}
2 changes: 1 addition & 1 deletion pb/gen.go
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Original file line number Diff line number Diff line change
@@ -1,3 +1,3 @@
package pb

//go:generate protoc --go_out=paths=source_relative:. --go-grpc_out=paths=source_relative:. image.proto notif.proto
//go:generate protoc --go_out=paths=source_relative:. --go-grpc_out=paths=source_relative:. image.proto notif.proto healthcheck.proto
164 changes: 164 additions & 0 deletions pb/healthcheck.pb.go
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14 changes: 14 additions & 0 deletions pb/healthcheck.proto
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@@ -0,0 +1,14 @@
syntax = "proto3";
option go_package = "github.com/crazy-max/diun/pb";

package pb;

message HealthcheckRequest {}

message HealthcheckResponse {
string message = 1;
}

service HealthcheckService {
rpc Healthcheck(HealthcheckRequest) returns (HealthcheckResponse) {}
}
121 changes: 121 additions & 0 deletions pb/healthcheck_grpc.pb.go
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