|
| 1 | +'use client' |
| 2 | + |
| 3 | +import { TarStream, TarStreamInput } from '@std/tar/tar-stream' |
| 4 | +import { chunk } from 'lodash' |
| 5 | +import Link from 'next/link' |
| 6 | +import { useState } from 'react' |
| 7 | +import { useApp } from '~/components/app-provider' |
| 8 | +import { |
| 9 | + Accordion, |
| 10 | + AccordionContent, |
| 11 | + AccordionItem, |
| 12 | + AccordionTrigger, |
| 13 | +} from '~/components/ui/accordion' |
| 14 | +import { Button } from '~/components/ui/button' |
| 15 | +import { Dialog, DialogContent, DialogHeader, DialogTitle } from '~/components/ui/dialog' |
| 16 | +import { Progress } from '~/components/ui/progress' |
| 17 | +import { DbManager } from '~/lib/db' |
| 18 | +import { countFiles, listFiles } from '~/lib/files' |
| 19 | +import { |
| 20 | + fileFromStream, |
| 21 | + fileToTarStreamFile, |
| 22 | + mergeIterables, |
| 23 | + readableStreamFromIterable, |
| 24 | + transformStreamFromFn, |
| 25 | +} from '~/lib/streams' |
| 26 | +import { |
| 27 | + currentDomainHostname, |
| 28 | + currentDomainUrl, |
| 29 | + downloadFile, |
| 30 | + legacyDomainHostname, |
| 31 | +} from '~/lib/util' |
| 32 | + |
| 33 | +export default function Page() { |
| 34 | + const { dbManager } = useApp() |
| 35 | + const [progress, setProgress] = useState<number>() |
| 36 | + |
| 37 | + return ( |
| 38 | + <> |
| 39 | + <Dialog open> |
| 40 | + <DialogContent className="max-w-2xl" showCloseButton={false}> |
| 41 | + <DialogHeader> |
| 42 | + <DialogTitle>Export your databases</DialogTitle> |
| 43 | + <div className="py-2 border-b" /> |
| 44 | + </DialogHeader> |
| 45 | + <p> |
| 46 | + {legacyDomainHostname} is renaming to {currentDomainHostname}, which means you need to |
| 47 | + transfer your databases if you wish to continue using them. |
| 48 | + </p> |
| 49 | + |
| 50 | + <Accordion type="single" collapsible> |
| 51 | + <AccordionItem value="item-1" className="border rounded-md"> |
| 52 | + <AccordionTrigger className="p-0 gap-2 px-3 py-2"> |
| 53 | + <div className="flex gap-2 items-center font-normal text-lighter text-sm"> |
| 54 | + <span> |
| 55 | + Why is {legacyDomainHostname} renaming to {currentDomainHostname}? |
| 56 | + </span> |
| 57 | + </div> |
| 58 | + </AccordionTrigger> |
| 59 | + <AccordionContent className="p-3 prose prose-sm"> |
| 60 | + This project is not an official Postgres project and we don't want to mislead |
| 61 | + anyone! We're renaming to{' '} |
| 62 | + <Link href={currentDomainUrl} className="underline"> |
| 63 | + {currentDomainHostname} |
| 64 | + </Link>{' '} |
| 65 | + because, well, that's what this does. This will still be 100% Postgres-focused, |
| 66 | + just with a different URL. |
| 67 | + </AccordionContent> |
| 68 | + </AccordionItem> |
| 69 | + </Accordion> |
| 70 | + <Accordion type="single" collapsible> |
| 71 | + <AccordionItem value="item-1" className="border rounded-md"> |
| 72 | + <AccordionTrigger className="p-0 gap-2 px-3 py-2"> |
| 73 | + <div className="flex gap-2 items-center font-normal text-lighter text-sm"> |
| 74 | + <span>Why do I need to export my databases?</span> |
| 75 | + </div> |
| 76 | + </AccordionTrigger> |
| 77 | + <AccordionContent className="p-3 prose prose-sm"> |
| 78 | + <p> |
| 79 | + Since PGlite databases are stored in your browser's IndexedDB storage, other |
| 80 | + domains like{' '} |
| 81 | + <Link href={currentDomainUrl} className="underline"> |
| 82 | + {currentDomainHostname} |
| 83 | + </Link>{' '} |
| 84 | + cannot access them directly (this is a security restriction built into every |
| 85 | + browser). |
| 86 | + </p> |
| 87 | + <p> |
| 88 | + If you'd like to continue using your previous databases and conversations: |
| 89 | + <ol> |
| 90 | + <li>Export them from {legacyDomainHostname}</li> |
| 91 | + <li>Import them to {currentDomainHostname}</li> |
| 92 | + </ol> |
| 93 | + </p> |
| 94 | + </AccordionContent> |
| 95 | + </AccordionItem> |
| 96 | + </Accordion> |
| 97 | + <div className="my-2 border-b" /> |
| 98 | + <div className="prose"> |
| 99 | + <h4 className="mb-4">How to transfer your databases to {currentDomainHostname}</h4> |
| 100 | + <ol> |
| 101 | + <li> |
| 102 | + Click <strong>Export</strong> to download all of your databases into a single |
| 103 | + tarball. |
| 104 | + <br /> |
| 105 | + {progress === undefined ? ( |
| 106 | + <Button |
| 107 | + className="my-2" |
| 108 | + onClick={async () => { |
| 109 | + if (!dbManager) { |
| 110 | + throw new Error('dbManager is not available') |
| 111 | + } |
| 112 | + |
| 113 | + setProgress(0) |
| 114 | + |
| 115 | + const dbCount = await dbManager.countDatabases() |
| 116 | + const fileCount = await countFiles() |
| 117 | + |
| 118 | + // Plus 1 for the meta DB |
| 119 | + const totalFiles = 1 + dbCount + fileCount |
| 120 | + |
| 121 | + // Passthrough stream to increment progress bar |
| 122 | + const progressPassthrough = transformStreamFromFn< |
| 123 | + TarStreamInput, |
| 124 | + TarStreamInput |
| 125 | + >((chunk) => { |
| 126 | + if (chunk.type === 'file') { |
| 127 | + setProgress((progress) => (progress ?? 0) + 100 / totalFiles) |
| 128 | + } |
| 129 | + return chunk |
| 130 | + }) |
| 131 | + |
| 132 | + const fileStream = mergeIterables([ |
| 133 | + createDumpStream(dbManager), |
| 134 | + createStorageStream(), |
| 135 | + ]) |
| 136 | + |
| 137 | + const tarGzStream = readableStreamFromIterable(fileStream) |
| 138 | + .pipeThrough(progressPassthrough) |
| 139 | + .pipeThrough(new TarStream()) |
| 140 | + .pipeThrough<Uint8Array>(new CompressionStream('gzip')) |
| 141 | + |
| 142 | + const file = await fileFromStream( |
| 143 | + tarGzStream, |
| 144 | + `${location.hostname}.tar.gz`, |
| 145 | + { type: 'application/x-gzip' } |
| 146 | + ) |
| 147 | + |
| 148 | + downloadFile(file) |
| 149 | + }} |
| 150 | + > |
| 151 | + Export |
| 152 | + </Button> |
| 153 | + ) : ( |
| 154 | + <div className="flex gap-2 text-xs items-center"> |
| 155 | + <Progress className="my-2 w-[60%]" value={Math.round(progress)} /> |
| 156 | + {Math.round(progress)}% |
| 157 | + </div> |
| 158 | + )} |
| 159 | + <br /> |
| 160 | + This tarball will contain every PGlite database's <code>pgdata</code> dump |
| 161 | + along with any files you imported or exported from {legacyDomainHostname}. |
| 162 | + </li> |
| 163 | + <li> |
| 164 | + Navigate to{' '} |
| 165 | + <Link href={`${currentDomainUrl}/import`}>{currentDomainHostname}/import</Link> and |
| 166 | + click <strong>Import</strong>. |
| 167 | + </li> |
| 168 | + </ol> |
| 169 | + </div> |
| 170 | + </DialogContent> |
| 171 | + </Dialog> |
| 172 | + </> |
| 173 | + ) |
| 174 | +} |
| 175 | + |
| 176 | +/** |
| 177 | + * Generates a stream of PGlite dumps for all the databases as tar file/directory entries. |
| 178 | + */ |
| 179 | +async function* createDumpStream( |
| 180 | + dbManager: DbManager, |
| 181 | + batchSize = 5 |
| 182 | +): AsyncIterable<TarStreamInput> { |
| 183 | + const databases = await dbManager.exportDatabases() |
| 184 | + const batches = chunk(databases, batchSize) |
| 185 | + |
| 186 | + // Meta DB has to be dumped separately |
| 187 | + // We intentionally yield this first so that it is |
| 188 | + // first in the archive |
| 189 | + const metaDb = await dbManager.getMetaDb() |
| 190 | + const metaDump = await metaDb.dumpDataDir('gzip') |
| 191 | + yield fileToTarStreamFile(new File([metaDump], 'meta.tar.gz', { type: metaDump.type })) |
| 192 | + |
| 193 | + yield { type: 'directory', path: '/dbs' } |
| 194 | + |
| 195 | + // Dump in batches to avoid excessive RAM use |
| 196 | + for (const batch of batches) { |
| 197 | + // All PGlite instances within a batch are loaded in parallel |
| 198 | + yield* await Promise.all( |
| 199 | + batch.map(async ({ id }) => { |
| 200 | + const db = await dbManager.getDbInstance(id) |
| 201 | + const dump = await db.dumpDataDir('gzip') |
| 202 | + const file = new File([dump], `${id}.tar.gz`, { type: dump.type }) |
| 203 | + await dbManager.closeDbInstance(id) |
| 204 | + return fileToTarStreamFile(file, '/dbs') |
| 205 | + }) |
| 206 | + ) |
| 207 | + } |
| 208 | +} |
| 209 | + |
| 210 | +/** |
| 211 | + * Creates a stream of storage files (eg. CSVs) as tar file/directory entries. |
| 212 | + */ |
| 213 | +async function* createStorageStream(): AsyncIterable<TarStreamInput> { |
| 214 | + yield { type: 'directory', path: '/files' } |
| 215 | + |
| 216 | + for await (const { id, file } of listFiles()) { |
| 217 | + // Capture the ID by storing each file in a sub-dir |
| 218 | + // named after the ID |
| 219 | + yield { type: 'directory', path: `/files/${id}` } |
| 220 | + yield fileToTarStreamFile(file, `/files/${id}`) |
| 221 | + } |
| 222 | +} |
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