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Add ability to inject gzip/bzip2 compressed MRT files #2815

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Add ability to inject gzip/bzip2 compressed MRT files #2815

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45eca9e
Add ability to inject gzipped MRT files
vista- Jun 12, 2024
74e5b06
Add bzip2 decompression capability, remove unnecessary MRT Reader closes
vista- Jun 12, 2024
19ccf58
Add 'gzip' to dictionary
vista- Jun 12, 2024
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24 changes: 20 additions & 4 deletions cmd/gobgp/mrt.go
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Original file line number Diff line number Diff line change
Expand Up @@ -16,10 +16,13 @@
package main

import (
"compress/bzip2"
"compress/gzip"
"fmt"
"io"
"os"
"strconv"
"strings"
"time"

"github.com/spf13/cobra"
Expand All @@ -31,12 +34,25 @@ import (
)

func injectMrt() error {

file, err := os.Open(mrtOpts.Filename)
var reader io.Reader
fileReader, err := os.Open(mrtOpts.Filename)
if err != nil {
return fmt.Errorf("failed to open file: %s", err)
}

if strings.HasSuffix(mrtOpts.Filename, ".gz") {
gzReader, err := gzip.NewReader(fileReader)
if err != nil {
return fmt.Errorf("failed to open gzip file: %s", err)
}
reader = gzReader
} else if strings.HasSuffix(mrtOpts.Filename, ".bz2") {
bz2Reader := bzip2.NewReader(fileReader)
reader = bz2Reader
} else {
reader = fileReader
}

if mrtOpts.NextHop != nil && !mrtOpts.SkipV4 && !mrtOpts.SkipV6 {
fmt.Println("You should probably specify either --no-ipv4 or --no-ipv6 when overwriting nexthop, unless your dump contains only one type of routes")
}
Expand All @@ -52,7 +68,7 @@ func injectMrt() error {
var peers []*mrt.Peer
for {
buf := make([]byte, mrt.MRT_COMMON_HEADER_LEN)
_, err := file.Read(buf)
_, err := io.ReadFull(reader, buf)
if err == io.EOF {
break
} else if err != nil {
Expand All @@ -66,7 +82,7 @@ func injectMrt() error {
}

buf = make([]byte, h.Len)
_, err = file.Read(buf)
_, err = io.ReadFull(reader, buf)
if err != nil {
exitWithError(fmt.Errorf("failed to read"))
}
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1 change: 1 addition & 0 deletions tools/spell-check/dictionary.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,7 @@ flowspec
gobgp
gobgpd
grpc
gzip
ibgp
ipproto
isis
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