Use port from AppBinding (#461) (#490)

/cherry-pick

Signed-off-by: Emruz Hossain <emruz@appscode.com>

Ref: stashed/stash#1272

Author: 1gtm

pkg/backup.go

@@ -221,6 +221,10 @@ func (opt *postgresOptions) backupPostgreSQL(targetRef api_v1beta1.TargetRef) (*
 			"-h", appBinding.Spec.ClientConfig.Service.Name,
 		},
 	}
+	// if port is specified, append port in the arguments
+	if appBinding.Spec.ClientConfig.Service.Port != 0 {
+		opt.backupOptions.StdinPipeCommand.Args = append(opt.backupOptions.StdinPipeCommand.Args, fmt.Sprintf("--port=%d", appBinding.Spec.ClientConfig.Service.Port))
+	}
 	for _, arg := range strings.Fields(opt.pgArgs) {
 		opt.backupOptions.StdinPipeCommand.Args = append(opt.backupOptions.StdinPipeCommand.Args, arg)
 	}

pkg/restore.go

@@ -18,6 +18,7 @@ package pkg
 
 import (
 	"context"
+	"fmt"
 	"path/filepath"
 	"strings"
 
@@ -182,6 +183,10 @@ func (opt *postgresOptions) restorePostgreSQL(targetRef api_v1beta1.TargetRef) (
 			"-h", appBinding.Spec.ClientConfig.Service.Name,
 		},
 	}
+	// if port is specified, append port in the arguments
+	if appBinding.Spec.ClientConfig.Service.Port != 0 {
+		opt.dumpOptions.StdoutPipeCommand.Args = append(opt.dumpOptions.StdoutPipeCommand.Args, fmt.Sprintf("--port=%d", appBinding.Spec.ClientConfig.Service.Port))
+	}
 	for _, arg := range strings.Fields(opt.pgArgs) {
 		opt.dumpOptions.StdoutPipeCommand.Args = append(opt.dumpOptions.StdoutPipeCommand.Args, arg)
 	}