commit f81a2427476921d1592fd4623e7842853742499f · willdot.net/back-at-it

.env.example

···

       4
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       BUCKET_NAME="my-super-duper-bucket"

     

       5
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       DID="the-did-to-backup"

     

       6
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       PDS_HOST="https://your-pds.com"

     

       7
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       +
       TANGLED_KNOT_DATABASE_DIRECTORY="/path/to/database/directory"

     

       8
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       +
       TANGLED_KNOT_REPOSITORY_DIRECTORY="/path/to/repository/directory"

     

       9
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       +
       BUGSNAG_API_KEY="enter-api-key-to-enable"

go.mod

···

       8
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       )

     

       9
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       10
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       require (

     

       11
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       +
       	github.com/bugsnag/bugsnag-go/v2 v2.6.2 // indirect

     

       12
       12
       +
       	github.com/bugsnag/panicwrap v1.3.4 // indirect

     

       11
       13
        
       	github.com/dustin/go-humanize v1.0.1 // indirect

     

       12
       14
        
       	github.com/go-ini/ini v1.67.0 // indirect

     

       13
       15
        
       	github.com/goccy/go-json v0.10.5 // indirect

     

       14
       16
        
       	github.com/google/uuid v1.6.0 // indirect

     

       17
       17
       +
       	github.com/kardianos/osext v0.0.0-20190222173326-2bc1f35cddc0 // indirect

     

       15
       18
        
       	github.com/klauspost/compress v1.18.0 // indirect

     

       16
       19
        
       	github.com/klauspost/cpuid/v2 v2.2.11 // indirect

     

       17
       20
        
       	github.com/minio/crc64nvme v1.0.2 // indirect

     

       18
       21
        
       	github.com/minio/md5-simd v1.1.2 // indirect

     

       19
       22
        
       	github.com/philhofer/fwd v1.2.0 // indirect

     

       23
       23
       +
       	github.com/pkg/errors v0.9.1 // indirect

     

       20
       24
        
       	github.com/rs/xid v1.6.0 // indirect

     

       21
       25
        
       	github.com/stretchr/testify v1.10.0 // indirect

     

       22
       26
        
       	github.com/tinylib/msgp v1.3.0 // indirect

go.sum

···

       1
       1
       +
       github.com/bitly/go-simplejson v0.5.1/go.mod h1:YOPVLzCfwK14b4Sff3oP1AmGhI9T9Vsg84etUnlyp+Q=

     

       2
       2
       +
       github.com/bugsnag/bugsnag-go/v2 v2.6.2 h1:gGjr8txMtPYWKovEBC+4o6tthYveuE7fjzu6XYVIApg=

     

       3
       3
       +
       github.com/bugsnag/bugsnag-go/v2 v2.6.2/go.mod h1:S9njhE7l6XCiKycOZ2zp0x1zoEE5nL3HjROCSsKc/3c=

     

       4
       4
       +
       github.com/bugsnag/panicwrap v1.3.4 h1:A6sXFtDGsgU/4BLf5JT0o5uYg3EeKgGx3Sfs+/uk3pU=

     

       5
       5
       +
       github.com/bugsnag/panicwrap v1.3.4/go.mod h1:D/8v3kj0zr8ZAKg1AQ6crr+5VwKN5eIywRkfhyM/+dE=

     

       1
       6
        
       github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=

     

       2
       7
        
       github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=

     

       3
       8
        
       github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=

     
···

       10
       15
        
       github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=

     

       11
       16
        
       github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=

     

       12
       17
        
       github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=

     

       18
       18
       +
       github.com/kardianos/osext v0.0.0-20190222173326-2bc1f35cddc0 h1:iQTw/8FWTuc7uiaSepXwyf3o52HaUYcV+Tu66S3F5GA=

     

       19
       19
       +
       github.com/kardianos/osext v0.0.0-20190222173326-2bc1f35cddc0/go.mod h1:1NbS8ALrpOvjt0rHPNLyCIeMtbizbir8U//inJ+zuB8=

     

       13
       20
        
       github.com/klauspost/compress v1.18.0 h1:c/Cqfb0r+Yi+JtIEq73FWXVkRonBlf0CRNYc8Zttxdo=

     

       14
       21
        
       github.com/klauspost/compress v1.18.0/go.mod h1:2Pp+KzxcywXVXMr50+X0Q/Lsb43OQHYWRCY2AiWywWQ=

     

       15
       22
        
       github.com/klauspost/cpuid/v2 v2.0.1/go.mod h1:FInQzS24/EEf25PyTYn52gqo7WaD8xa0213Md/qVLRg=

     
···

       23
       30
        
       github.com/minio/minio-go/v7 v7.0.95/go.mod h1:wOOX3uxS334vImCNRVyIDdXX9OsXDm89ToynKgqUKlo=

     

       24
       31
        
       github.com/philhofer/fwd v1.2.0 h1:e6DnBTl7vGY+Gz322/ASL4Gyp1FspeMvx1RNDoToZuM=

     

       25
       32
        
       github.com/philhofer/fwd v1.2.0/go.mod h1:RqIHx9QI14HlwKwm98g9Re5prTQ6LdeRQn+gXJFxsJM=

     

       33
       33
       +
       github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=

     

       34
       34
       +
       github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=

     

       26
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       github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=

     

       27
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       github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=

     

       28
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       github.com/rs/xid v1.6.0 h1:fV591PaemRlL6JfRxGDEPl69wICngIQ3shQtzfy2gxU=

+15 -161

main.go

···

       1
       1
        
       package main

     

       2
       2
        
       

     

       3
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       import (

     

       4
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       -
       	"archive/zip"

     

       5
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       	"context"

     

       6
       6
       -
       	"encoding/json"

     

       7
       7
       -
       	"fmt"

     

       8
       8
       -
       	"io"

     

       9
       5
        
       	"log/slog"

     

       10
       10
       -
       	"net/http"

     

       11
       6
        
       	"os"

     

       12
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       8
       8
       +
       	"github.com/bugsnag/bugsnag-go/v2"

     

       13
       9
        
       	"github.com/joho/godotenv"

     

       14
       10
        
       	"github.com/minio/minio-go/v7"

     

       15
       11
        
       	"github.com/minio/minio-go/v7/pkg/credentials"

     
···

       26
       22
        
       		}

     

       27
       23
        
       	}

     

       28
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       25
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       +
       	configureBugsnag()

     

       26
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       +
       

     

       29
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       	minioClient, err := createMinioClient()

     

       30
       28
        
       	if err != nil {

     

       31
       29
        
       		slog.Error("create minio client", "error", err)

     

       30
       30
       +
       		bugsnag.Notify(err)

     

       32
       31
        
       		return

     

       33
       32
        
       	}

     

       34
       33
        
       

     
···

       37
       36
        
       	err = minioClient.MakeBucket(ctx, bucketName, minio.MakeBucketOptions{})

     

       38
       37
        
       	if err != nil {

     

       39
       38
        
       		slog.Error("create bucket", "error", err)

     

       40
       40
       -
       		return

     

       41
       41
       -
       	}

     

       42
       42
       -
       

     

       43
       43
       -
       	err = backupRepo(ctx, minioClient, bucketName)

     

       44
       44
       -
       	if err != nil {

     

       45
       45
       -
       		slog.Error("backup repo", "error", err)

     

       39
       39
       +
       		bugsnag.Notify(err)

     

       46
       40
        
       		return

     

       47
       41
        
       	}

     

       48
       42
        
       

     

       49
       49
       -
       	err = backupBlobs(ctx, minioClient, bucketName)

     

       50
       50
       -
       	if err != nil {

     

       51
       51
       -
       		slog.Error("backup blobs", "error", err)

     

       52
       52
       -
       		return

     

       53
       53
       -
       	}

     

       43
       43
       +
       	backupPDS(ctx, minioClient, bucketName)

     

       54
       44
        
       }

     

       55
       45
        
       

     

       56
       46
        
       func createMinioClient() (*minio.Client, error) {

     
···

       65
       55
        
       	})

     

       66
       56
        
       }

     

       67
       57
        
       

     

       68
       68
       -
       func backupRepo(ctx context.Context, minioClient *minio.Client, bucketName string) error {

     

       69
       69
       -
       	pdsHost := os.Getenv("PDS_HOST")

     

       70
       70
       -
       	did := os.Getenv("DID")

     

       71
       71
       -
       

     

       72
       72
       -
       	url := fmt.Sprintf("%s/xrpc/com.atproto.sync.getRepo?did=%s", pdsHost, did)

     

       73
       73
       -
       	req, err := http.NewRequestWithContext(ctx, "GET", url, nil)

     

       74
       74
       -
       	if err != nil {

     

       75
       75
       -
       		return fmt.Errorf("create get repo request: %w", err)

     

       76
       76
       -
       	}

     

       77
       77
       -
       

     

       78
       78
       -
       	req.Header.Add("ACCEPT", "application/vnd.ipld.car")

     

       79
       79
       -
       	resp, err := http.DefaultClient.Do(req)

     

       80
       80
       -
       	if err != nil {

     

       81
       81
       -
       		return fmt.Errorf("get repo: %w", err)

     

       82
       82
       -
       	}

     

       83
       83
       -
       

     

       84
       84
       -
       	defer resp.Body.Close()

     

       85
       85
       -
       

     

       86
       86
       -
       	_, err = minioClient.PutObject(ctx, bucketName, "pds-repo", resp.Body, -1, minio.PutObjectOptions{})

     

       87
       87
       -
       	if err != nil {

     

       88
       88
       -
       		return fmt.Errorf("stream repo to bucket: %w", err)

     

       89
       89
       -
       	}

     

       90
       90
       -
       

     

       91
       91
       -
       	return nil

     

       92
       92
       -
       }

     

       93
       93
       -
       

     

       94
       94
       -
       func backupBlobs(ctx context.Context, minioClient *minio.Client, bucketName string) error {

     

       95
       95
       -
       	cids, err := getAllBlobCIDs(ctx)

     

       96
       96
       -
       	if err != nil {

     

       97
       97
       -
       		return fmt.Errorf("get all blob CIDs: %w", err)

     

       98
       98
       -
       	}

     

       99
       99
       -
       

     

       100
       100
       -
       	reader, writer := io.Pipe()

     

       101
       101
       -
       	defer reader.Close()

     

       102
       102
       -
       

     

       103
       103
       -
       	zipWriter := zip.NewWriter(writer)

     

       104
       104
       -
       

     

       105
       105
       -
       	go func() {

     

       106
       106
       -
       		defer writer.Close()

     

       107
       107
       -
       		defer zipWriter.Close()

     

       108
       108
       -
       

     

       109
       109
       -
       		for _, cid := range cids {

     

       110
       110
       -
       			slog.Info("processing cid", "cid", cid)

     

       111
       111
       -
       			blob, err := getBlob(ctx, cid)

     

       112
       112
       -
       			if err != nil {

     

       113
       113
       -
       				slog.Error("failed to get blob", "cid", cid, "error", err)

     

       114
       114
       -
       				continue

     

       115
       115
       -
       			}

     

       116
       116
       -
       

     

       117
       117
       -
       			zipFile, err := zipWriter.Create(cid)

     

       118
       118
       -
       			if err != nil {

     

       119
       119
       -
       				slog.Error("create new file in zipwriter", "cid", cid, "error", err)

     

       120
       120
       -
       				blob.Close()

     

       121
       121
       -
       				continue

     

       122
       122
       -
       			}

     

       123
       123
       -
       

     

       124
       124
       -
       			io.Copy(zipFile, blob)

     

       125
       125
       -
       			blob.Close()

     

       126
       126
       -
       		}

     

       127
       127
       -
       	}()

     

       128
       128
       -
       

     

       129
       129
       -
       	_, err = minioClient.PutObject(ctx, bucketName, "pds-blobs.zip", reader, -1, minio.PutObjectOptions{})

     

       130
       130
       -
       	if err != nil {

     

       131
       131
       -
       		return fmt.Errorf("stream blobs to bucket: %w", err)

     

       132
       132
       -
       	}

     

       133
       133
       -
       

     

       134
       134
       -
       	return nil

     

       135
       135
       -
       }

     

       136
       136
       -
       

     

       137
       137
       -
       func getAllBlobCIDs(ctx context.Context) ([]string, error) {

     

       138
       138
       -
       	cursor := ""

     

       139
       139
       -
       	limit := 100

     

       140
       140
       -
       	var cids []string

     

       141
       141
       -
       	for {

     

       142
       142
       -
       		res, err := listBlobs(ctx, cursor, int64(limit))

     

       143
       143
       -
       		if err != nil {

     

       144
       144
       -
       			return nil, fmt.Errorf("list blobs: %w", err)

     

       145
       145
       -
       		}

     

       146
       146
       -
       		if len(res.CIDs) == 0 {

     

       147
       147
       -
       			return cids, nil

     

       148
       148
       -
       		}

     

       149
       149
       -
       

     

       150
       150
       -
       		cids = append(cids, res.CIDs...)

     

       151
       151
       -
       

     

       152
       152
       -
       		if len(res.CIDs) < limit {

     

       153
       153
       -
       			return cids, nil

     

       154
       154
       -
       		}

     

       155
       155
       -
       

     

       156
       156
       -
       		cursor = res.Cursor

     

       157
       157
       -
       	}

     

       158
       158
       -
       }

     

       159
       159
       -
       

     

       160
       160
       -
       type listBlobsResponse struct {

     

       161
       161
       -
       	Cursor string   `json:"cursor"`

     

       162
       162
       -
       	CIDs   []string `json:"cids"`

     

       163
       163
       -
       }

     

       164
       164
       -
       

     

       165
       165
       -
       func listBlobs(ctx context.Context, cursor string, limit int64) (listBlobsResponse, error) {

     

       166
       166
       -
       	pdsHost := os.Getenv("PDS_HOST")

     

       167
       167
       -
       	did := os.Getenv("DID")

     

       168
       168
       -
       

     

       169
       169
       -
       	// TODO: do proper url encoding of query params

     

       170
       170
       -
       	url := fmt.Sprintf("%s/xrpc/com.atproto.sync.listBlobs?did=%s&cursor=%s&limit=%d", pdsHost, did, cursor, limit)

     

       171
       171
       -
       	req, err := http.NewRequestWithContext(ctx, "GET", url, nil)

     

       172
       172
       -
       	if err != nil {

     

       173
       173
       -
       		return listBlobsResponse{}, fmt.Errorf("create list blobs request: %w", err)

     

       174
       174
       -
       	}

     

       175
       175
       -
       

     

       176
       176
       -
       	resp, err := http.DefaultClient.Do(req)

     

       177
       177
       -
       	if err != nil {

     

       178
       178
       -
       		return listBlobsResponse{}, fmt.Errorf("list blobs: %w", err)

     

       179
       179
       -
       	}

     

       180
       180
       -
       

     

       181
       181
       -
       	defer resp.Body.Close()

     

       182
       182
       -
       

     

       183
       183
       -
       	resBody, err := io.ReadAll(resp.Body)

     

       184
       184
       -
       	if err != nil {

     

       185
       185
       -
       		return listBlobsResponse{}, fmt.Errorf("failed to read response: %w", err)

     

       186
       186
       -
       	}

     

       187
       187
       -
       

     

       188
       188
       -
       	var result listBlobsResponse

     

       189
       189
       -
       	err = json.Unmarshal(resBody, &result)

     

       190
       190
       -
       	if err != nil {

     

       191
       191
       -
       		return listBlobsResponse{}, fmt.Errorf("failed to unmarshal response: %w", err)

     

       192
       192
       -
       	}

     

       193
       193
       -
       

     

       194
       194
       -
       	return result, nil

     

       195
       195
       -
       }

     

       196
       196
       -
       

     

       197
       197
       -
       func getBlob(ctx context.Context, cid string) (io.ReadCloser, error) {

     

       198
       198
       -
       	pdsHost := os.Getenv("PDS_HOST")

     

       199
       199
       -
       	did := os.Getenv("DID")

     

       200
       200
       -
       

     

       201
       201
       -
       	// TODO: do proper url encoding of query params

     

       202
       202
       -
       	url := fmt.Sprintf("%s/xrpc/com.atproto.sync.getBlob?did=%s&cid=%s", pdsHost, did, cid)

     

       203
       203
       -
       	req, err := http.NewRequestWithContext(ctx, "GET", url, nil)

     

       204
       204
       -
       	if err != nil {

     

       205
       205
       -
       		return nil, fmt.Errorf("create get blob request: %w", err)

     

       206
       206
       -
       	}

     

       207
       207
       -
       

     

       208
       208
       -
       	resp, err := http.DefaultClient.Do(req)

     

       209
       209
       -
       	if err != nil {

     

       210
       210
       -
       		return nil, fmt.Errorf("get blob: %w", err)

     

       58
       58
       +
       func configureBugsnag() {

     

       59
       59
       +
       	apiKey := os.Getenv("BUGSNAG_API_KEY")

     

       60
       60
       +
       	if apiKey == "" {

     

       61
       61
       +
       		slog.Info("bugsnag not configured")

     

       62
       62
       +
       		return

     

       211
       63
        
       	}

     

       212
       212
       -
       

     

       213
       213
       -
       	return resp.Body, nil

     

       64
       64
       +
       	bugsnag.Configure(bugsnag.Configuration{

     

       65
       65
       +
       		APIKey:       apiKey,

     

       66
       66
       +
       		ReleaseStage: "production",

     

       67
       67
       +
       	})

     

       214
       68
        
       }

+186

pds.go

···

       1
       1
       +
       package main

     

       2
       2
       +
       

     

       3
       3
       +
       import (

     

       4
       4
       +
       	"archive/zip"

     

       5
       5
       +
       	"context"

     

       6
       6
       +
       	"encoding/json"

     

       7
       7
       +
       	"fmt"

     

       8
       8
       +
       	"io"

     

       9
       9
       +
       	"log/slog"

     

       10
       10
       +
       	"net/http"

     

       11
       11
       +
       	"os"

     

       12
       12
       +
       

     

       13
       13
       +
       	"github.com/bugsnag/bugsnag-go/v2"

     

       14
       14
       +
       	"github.com/minio/minio-go/v7"

     

       15
       15
       +
       )

     

       16
       16
       +
       

     

       17
       17
       +
       func backupPDS(ctx context.Context, minioClient *minio.Client, bucketName string) {

     

       18
       18
       +
       	if os.Getenv("PDS_HOST") == "" || os.Getenv("DID") == "" {

     

       19
       19
       +
       		slog.Info("PDS_HOST or DID env not set - skipping PDS backup")

     

       20
       20
       +
       		return

     

       21
       21
       +
       	}

     

       22
       22
       +
       

     

       23
       23
       +
       	err := backupRepo(ctx, minioClient, bucketName)

     

       24
       24
       +
       	if err != nil {

     

       25
       25
       +
       		slog.Error("backup repo", "error", err)

     

       26
       26
       +
       		bugsnag.Notify(err)

     

       27
       27
       +
       		return

     

       28
       28
       +
       	}

     

       29
       29
       +
       

     

       30
       30
       +
       	err = backupBlobs(ctx, minioClient, bucketName)

     

       31
       31
       +
       	if err != nil {

     

       32
       32
       +
       		slog.Error("backup blobs", "error", err)

     

       33
       33
       +
       		bugsnag.Notify(err)

     

       34
       34
       +
       		return

     

       35
       35
       +
       	}

     

       36
       36
       +
       }

     

       37
       37
       +
       

     

       38
       38
       +
       func backupRepo(ctx context.Context, minioClient *minio.Client, bucketName string) error {

     

       39
       39
       +
       	pdsHost := os.Getenv("PDS_HOST")

     

       40
       40
       +
       	did := os.Getenv("DID")

     

       41
       41
       +
       

     

       42
       42
       +
       	url := fmt.Sprintf("%s/xrpc/com.atproto.sync.getRepo?did=%s", pdsHost, did)

     

       43
       43
       +
       	req, err := http.NewRequestWithContext(ctx, "GET", url, nil)

     

       44
       44
       +
       	if err != nil {

     

       45
       45
       +
       		return fmt.Errorf("create get repo request: %w", err)

     

       46
       46
       +
       	}

     

       47
       47
       +
       

     

       48
       48
       +
       	req.Header.Add("ACCEPT", "application/vnd.ipld.car")

     

       49
       49
       +
       	resp, err := http.DefaultClient.Do(req)

     

       50
       50
       +
       	if err != nil {

     

       51
       51
       +
       		return fmt.Errorf("get repo: %w", err)

     

       52
       52
       +
       	}

     

       53
       53
       +
       

     

       54
       54
       +
       	defer resp.Body.Close()

     

       55
       55
       +
       

     

       56
       56
       +
       	_, err = minioClient.PutObject(ctx, bucketName, "pds-repo", resp.Body, -1, minio.PutObjectOptions{})

     

       57
       57
       +
       	if err != nil {

     

       58
       58
       +
       		return fmt.Errorf("stream repo to bucket: %w", err)

     

       59
       59
       +
       	}

     

       60
       60
       +
       

     

       61
       61
       +
       	return nil

     

       62
       62
       +
       }

     

       63
       63
       +
       

     

       64
       64
       +
       func backupBlobs(ctx context.Context, minioClient *minio.Client, bucketName string) error {

     

       65
       65
       +
       	cids, err := getAllBlobCIDs(ctx)

     

       66
       66
       +
       	if err != nil {

     

       67
       67
       +
       		return fmt.Errorf("get all blob CIDs: %w", err)

     

       68
       68
       +
       	}

     

       69
       69
       +
       

     

       70
       70
       +
       	reader, writer := io.Pipe()

     

       71
       71
       +
       	defer reader.Close()

     

       72
       72
       +
       

     

       73
       73
       +
       	zipWriter := zip.NewWriter(writer)

     

       74
       74
       +
       

     

       75
       75
       +
       	go func() {

     

       76
       76
       +
       		defer writer.Close()

     

       77
       77
       +
       		defer zipWriter.Close()

     

       78
       78
       +
       

     

       79
       79
       +
       		for _, cid := range cids {

     

       80
       80
       +
       			slog.Info("processing cid", "cid", cid)

     

       81
       81
       +
       			blob, err := getBlob(ctx, cid)

     

       82
       82
       +
       			if err != nil {

     

       83
       83
       +
       				slog.Error("failed to get blob", "cid", cid, "error", err)

     

       84
       84
       +
       				bugsnag.Notify(err)

     

       85
       85
       +
       				continue

     

       86
       86
       +
       			}

     

       87
       87
       +
       

     

       88
       88
       +
       			zipFile, err := zipWriter.Create(cid)

     

       89
       89
       +
       			if err != nil {

     

       90
       90
       +
       				slog.Error("create new file in zipwriter", "cid", cid, "error", err)

     

       91
       91
       +
       				bugsnag.Notify(err)

     

       92
       92
       +
       				blob.Close()

     

       93
       93
       +
       				continue

     

       94
       94
       +
       			}

     

       95
       95
       +
       

     

       96
       96
       +
       			io.Copy(zipFile, blob)

     

       97
       97
       +
       			blob.Close()

     

       98
       98
       +
       		}

     

       99
       99
       +
       	}()

     

       100
       100
       +
       

     

       101
       101
       +
       	_, err = minioClient.PutObject(ctx, bucketName, "pds-blobs.zip", reader, -1, minio.PutObjectOptions{})

     

       102
       102
       +
       	if err != nil {

     

       103
       103
       +
       		return fmt.Errorf("stream blobs to bucket: %w", err)

     

       104
       104
       +
       	}

     

       105
       105
       +
       

     

       106
       106
       +
       	return nil

     

       107
       107
       +
       }

     

       108
       108
       +
       

     

       109
       109
       +
       func getAllBlobCIDs(ctx context.Context) ([]string, error) {

     

       110
       110
       +
       	cursor := ""

     

       111
       111
       +
       	limit := 100

     

       112
       112
       +
       	var cids []string

     

       113
       113
       +
       	for {

     

       114
       114
       +
       		res, err := listBlobs(ctx, cursor, int64(limit))

     

       115
       115
       +
       		if err != nil {

     

       116
       116
       +
       			return nil, fmt.Errorf("list blobs: %w", err)

     

       117
       117
       +
       		}

     

       118
       118
       +
       		if len(res.CIDs) == 0 {

     

       119
       119
       +
       			return cids, nil

     

       120
       120
       +
       		}

     

       121
       121
       +
       

     

       122
       122
       +
       		cids = append(cids, res.CIDs...)

     

       123
       123
       +
       

     

       124
       124
       +
       		if len(res.CIDs) < limit {

     

       125
       125
       +
       			return cids, nil

     

       126
       126
       +
       		}

     

       127
       127
       +
       

     

       128
       128
       +
       		cursor = res.Cursor

     

       129
       129
       +
       	}

     

       130
       130
       +
       }

     

       131
       131
       +
       

     

       132
       132
       +
       type listBlobsResponse struct {

     

       133
       133
       +
       	Cursor string   `json:"cursor"`

     

       134
       134
       +
       	CIDs   []string `json:"cids"`

     

       135
       135
       +
       }

     

       136
       136
       +
       

     

       137
       137
       +
       func listBlobs(ctx context.Context, cursor string, limit int64) (listBlobsResponse, error) {

     

       138
       138
       +
       	pdsHost := os.Getenv("PDS_HOST")

     

       139
       139
       +
       	did := os.Getenv("DID")

     

       140
       140
       +
       

     

       141
       141
       +
       	// TODO: do proper url encoding of query params

     

       142
       142
       +
       	url := fmt.Sprintf("%s/xrpc/com.atproto.sync.listBlobs?did=%s&cursor=%s&limit=%d", pdsHost, did, cursor, limit)

     

       143
       143
       +
       	req, err := http.NewRequestWithContext(ctx, "GET", url, nil)

     

       144
       144
       +
       	if err != nil {

     

       145
       145
       +
       		return listBlobsResponse{}, fmt.Errorf("create list blobs request: %w", err)

     

       146
       146
       +
       	}

     

       147
       147
       +
       

     

       148
       148
       +
       	resp, err := http.DefaultClient.Do(req)

     

       149
       149
       +
       	if err != nil {

     

       150
       150
       +
       		return listBlobsResponse{}, fmt.Errorf("list blobs: %w", err)

     

       151
       151
       +
       	}

     

       152
       152
       +
       

     

       153
       153
       +
       	defer resp.Body.Close()

     

       154
       154
       +
       

     

       155
       155
       +
       	resBody, err := io.ReadAll(resp.Body)

     

       156
       156
       +
       	if err != nil {

     

       157
       157
       +
       		return listBlobsResponse{}, fmt.Errorf("failed to read response: %w", err)

     

       158
       158
       +
       	}

     

       159
       159
       +
       

     

       160
       160
       +
       	var result listBlobsResponse

     

       161
       161
       +
       	err = json.Unmarshal(resBody, &result)

     

       162
       162
       +
       	if err != nil {

     

       163
       163
       +
       		return listBlobsResponse{}, fmt.Errorf("failed to unmarshal response: %w", err)

     

       164
       164
       +
       	}

     

       165
       165
       +
       

     

       166
       166
       +
       	return result, nil

     

       167
       167
       +
       }

     

       168
       168
       +
       

     

       169
       169
       +
       func getBlob(ctx context.Context, cid string) (io.ReadCloser, error) {

     

       170
       170
       +
       	pdsHost := os.Getenv("PDS_HOST")

     

       171
       171
       +
       	did := os.Getenv("DID")

     

       172
       172
       +
       

     

       173
       173
       +
       	// TODO: do proper url encoding of query params

     

       174
       174
       +
       	url := fmt.Sprintf("%s/xrpc/com.atproto.sync.getBlob?did=%s&cid=%s", pdsHost, did, cid)

     

       175
       175
       +
       	req, err := http.NewRequestWithContext(ctx, "GET", url, nil)

     

       176
       176
       +
       	if err != nil {

     

       177
       177
       +
       		return nil, fmt.Errorf("create get blob request: %w", err)

     

       178
       178
       +
       	}

     

       179
       179
       +
       

     

       180
       180
       +
       	resp, err := http.DefaultClient.Do(req)

     

       181
       181
       +
       	if err != nil {

     

       182
       182
       +
       		return nil, fmt.Errorf("get blob: %w", err)

     

       183
       183
       +
       	}

     

       184
       184
       +
       

     

       185
       185
       +
       	return resp.Body, nil

     

       186
       186
       +
       }

+98

tangled_knot.go

···

       1
       1
       +
       package main

     

       2
       2
       +
       

     

       3
       3
       +
       import (

     

       4
       4
       +
       	"archive/tar"

     

       5
       5
       +
       	"compress/gzip"

     

       6
       6
       +
       	"context"

     

       7
       7
       +
       	"io"

     

       8
       8
       +
       	"log/slog"

     

       9
       9
       +
       	"os"

     

       10
       10
       +
       	"path/filepath"

     

       11
       11
       +
       

     

       12
       12
       +
       	"github.com/bugsnag/bugsnag-go/v2"

     

       13
       13
       +
       	"github.com/minio/minio-go/v7"

     

       14
       14
       +
       )

     

       15
       15
       +
       

     

       16
       16
       +
       func backupTangledKnot(ctx context.Context, minioClient *minio.Client, bucketName string) {

     

       17
       17
       +
       	if os.Getenv("BACKUP_TANGLED_KNOT") != "true" {

     

       18
       18
       +
       		return

     

       19
       19
       +
       	}

     

       20
       20
       +
       

     

       21
       21
       +
       	backupKnotDB(ctx, minioClient, bucketName)

     

       22
       22
       +
       }

     

       23
       23
       +
       

     

       24
       24
       +
       func backupKnotDB(ctx context.Context, minioClient *minio.Client, bucketName string) {

     

       25
       25
       +
       	dir := os.Getenv("TANGLED_KNOT_DATABASE_DIRECTORY")

     

       26
       26
       +
       

     

       27
       27
       +
       	pipeReader, pipeWriter := io.Pipe()

     

       28
       28
       +
       	defer pipeReader.Close()

     

       29
       29
       +
       

     

       30
       30
       +
       	go compress(dir, pipeWriter)

     

       31
       31
       +
       

     

       32
       32
       +
       	_, err := minioClient.PutObject(ctx, bucketName, "knot-db.zip", pipeReader, -1, minio.PutObjectOptions{})

     

       33
       33
       +
       	if err != nil {

     

       34
       34
       +
       		slog.Error("stream knot DB to bucket: %w")

     

       35
       35
       +
       		bugsnag.Notify(err)

     

       36
       36
       +
       	}

     

       37
       37
       +
       }

     

       38
       38
       +
       

     

       39
       39
       +
       func backupKnotRepos(ctx context.Context, minioClient *minio.Client, bucketName string) {

     

       40
       40
       +
       	dir := os.Getenv("TANGLED_KNOT_REPOSITORY_DIRECTORY")

     

       41
       41
       +
       

     

       42
       42
       +
       	pipeReader, pipeWriter := io.Pipe()

     

       43
       43
       +
       	defer pipeReader.Close()

     

       44
       44
       +
       

     

       45
       45
       +
       	go compress(dir, pipeWriter)

     

       46
       46
       +
       

     

       47
       47
       +
       	_, err := minioClient.PutObject(ctx, bucketName, "knot-repos.zip", pipeReader, -1, minio.PutObjectOptions{})

     

       48
       48
       +
       	if err != nil {

     

       49
       49
       +
       		slog.Error("stream knot repos to bucket: %w")

     

       50
       50
       +
       		bugsnag.Notify(err)

     

       51
       51
       +
       	}

     

       52
       52
       +
       }

     

       53
       53
       +
       

     

       54
       54
       +
       func compress(src string, writer io.WriteCloser) error {

     

       55
       55
       +
       	zipWriter := gzip.NewWriter(writer)

     

       56
       56
       +
       	tarWriter := tar.NewWriter(zipWriter)

     

       57
       57
       +
       

     

       58
       58
       +
       	defer writer.Close()

     

       59
       59
       +
       	defer zipWriter.Close()

     

       60
       60
       +
       	defer tarWriter.Close()

     

       61
       61
       +
       

     

       62
       62
       +
       	filepath.Walk(src, func(file string, fi os.FileInfo, err error) error {

     

       63
       63
       +
       		header, err := tar.FileInfoHeader(fi, file)

     

       64
       64
       +
       		if err != nil {

     

       65
       65
       +
       			return err

     

       66
       66
       +
       		}

     

       67
       67
       +
       

     

       68
       68
       +
       		// must provide real name

     

       69
       69
       +
       		// (see https://golang.org/src/archive/tar/common.go?#L626)

     

       70
       70
       +
       		header.Name = filepath.ToSlash(file)

     

       71
       71
       +
       

     

       72
       72
       +
       		if err := tarWriter.WriteHeader(header); err != nil {

     

       73
       73
       +
       			return err

     

       74
       74
       +
       		}

     

       75
       75
       +
       		// if not a dir, write file content

     

       76
       76
       +
       		if !fi.IsDir() {

     

       77
       77
       +
       			data, err := os.Open(file)

     

       78
       78
       +
       			if err != nil {

     

       79
       79
       +
       				return err

     

       80
       80
       +
       			}

     

       81
       81
       +
       			if _, err := io.Copy(tarWriter, data); err != nil {

     

       82
       82
       +
       				return err

     

       83
       83
       +
       			}

     

       84
       84
       +
       		}

     

       85
       85
       +
       		return nil

     

       86
       86
       +
       	})

     

       87
       87
       +
       

     

       88
       88
       +
       	// produce tar

     

       89
       89
       +
       	if err := tarWriter.Close(); err != nil {

     

       90
       90
       +
       		return err

     

       91
       91
       +
       	}

     

       92
       92
       +
       	// produce gzip

     

       93
       93
       +
       	if err := zipWriter.Close(); err != nil {

     

       94
       94
       +
       		return err

     

       95
       95
       +
       	}

     

       96
       96
       +
       	//

     

       97
       97
       +
       	return nil

     

       98
       98
       +
       }