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Livetail can now be invoked on the client with the command `pb tail stream-name` Co-authored-by: Satyam Singh <[email protected]>
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|---|---|---|
| @@ -0,0 +1,88 @@ | ||
| // Copyright (c) 2023 Cloudnatively Services Pvt Ltd | ||
| // | ||
| // | ||
| // This program is free software: you can redistribute it and/or modify | ||
| // it under the terms of the GNU Affero General Public License as published by | ||
| // the Free Software Foundation, either version 3 of the License, or | ||
| // (at your option) any later version. | ||
| // | ||
| // This program is distributed in the hope that it will be useful | ||
| // but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| // GNU Affero General Public License for more details. | ||
| // | ||
| // You should have received a copy of the GNU Affero General Public License | ||
| // along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
|
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| package cmd | ||
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||
| import ( | ||
| "bytes" | ||
| "context" | ||
| "encoding/base64" | ||
| "encoding/json" | ||
| "fmt" | ||
|
|
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| "pb/pkg/config" | ||
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| "github.com/apache/arrow/go/v13/arrow/array" | ||
| "github.com/apache/arrow/go/v13/arrow/flight" | ||
| "github.com/spf13/cobra" | ||
| "google.golang.org/grpc" | ||
| "google.golang.org/grpc/credentials/insecure" | ||
| "google.golang.org/grpc/metadata" | ||
| ) | ||
|
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| var TailCmd = &cobra.Command{ | ||
| Use: "tail stream-name", | ||
| Example: " pb tail backend_logs", | ||
| Short: "tail a log stream", | ||
| Args: cobra.ExactArgs(1), | ||
| PreRunE: PreRunDefaultProfile, | ||
| RunE: func(cmd *cobra.Command, args []string) error { | ||
| name := args[0] | ||
| profile := DefaultProfile | ||
| return tail(profile, name) | ||
| }, | ||
| } | ||
|
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| func tail(profile config.Profile, stream string) error { | ||
| payload, _ := json.Marshal(struct { | ||
| Stream string `json:"stream"` | ||
| }{ | ||
| Stream: stream, | ||
| }) | ||
| client, err := flight.NewClientWithMiddleware("localhost:8001", nil, nil, grpc.WithTransportCredentials(insecure.NewCredentials())) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| authHeader := basicAuth(profile.Username, profile.Password) | ||
| resp, err := client.DoGet(metadata.NewOutgoingContext(context.Background(), metadata.New(map[string]string{"Authorization": "Basic " + authHeader})), &flight.Ticket{ | ||
| Ticket: payload, | ||
| }) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| records, err := flight.NewRecordReader(resp) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer records.Release() | ||
|
|
||
| for { | ||
| record, err := records.Read() | ||
| if err != nil { | ||
| return err | ||
| } | ||
| var buf bytes.Buffer | ||
| array.RecordToJSON(record, &buf) | ||
| fmt.Println(buf.String()) | ||
| } | ||
| } | ||
|
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| func basicAuth(username, password string) string { | ||
| auth := username + ":" + password | ||
| return base64.StdEncoding.EncodeToString([]byte(auth)) | ||
| } |
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