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Export/Database: Add version and meta.json entry to zip export
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Lorenz Stechauner
2025-09-25 16:02:00 +02:00
parent 9d02f18bac
commit c8a95422af
3 changed files with 91 additions and 37 deletions
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65
Elwig/Helpers/Export/Database.cs
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@@ -2,16 +2,48 @@ using System;
using System.Collections.Generic;
using System.IO;
using System.IO.Compression;
using System.Text.Json.Nodes;
using System.Threading.Tasks;
namespace Elwig.Helpers.Export {
public static class Database {
private static async Task<(long? ApplicationId, string? UserVersion, long? SchemaVersion, long FileSize)> GetMeta() {
long size = new FileInfo(App.Config.DatabaseFile).Length;
using var cnx = await AppDbContext.ConnectAsync();
var applId = (long?)await AppDbContext.ExecuteScalar(cnx, "PRAGMA application_id");
var userVers = (long?)await AppDbContext.ExecuteScalar(cnx, "PRAGMA user_version");
var schemaVers = (long?)await AppDbContext.ExecuteScalar(cnx, "PRAGMA schema_version");
return (applId, userVers != null ? $"{userVers >> 24}.{(userVers >> 16) & 0xFF}.{(userVers >> 8) & 0xFF}.{userVers & 0xFF}" : null, schemaVers, size);
}
public static async Task ExportSqlite(string filename, bool zipFile) {
if (zipFile) {
File.Delete(filename);
using var zip = ZipFile.Open(filename, ZipArchiveMode.Create);
await zip.CheckIntegrity();
var version = zip.CreateEntry("version", CompressionLevel.NoCompression);
using (var writer = new StreamWriter(version.Open(), Utils.UTF8)) {
await writer.WriteAsync("elwig:1");
}
var (applId, userVers, schemaVers, size) = await GetMeta();
var meta = zip.CreateEntry("meta.json", CompressionLevel.NoCompression);
using (var writer = new StreamWriter(meta.Open(), Utils.UTF8)) {
var obj = new JsonObject {
["timestamp"] = $"{DateTime.UtcNow:yyyy-MM-ddTHH:mm:ssZ}",
["zwstid"] = App.ZwstId,
["device"] = Environment.MachineName,
["database"] = new JsonObject {
["application_id"] = applId,
["user_version"] = userVers,
["schema_version"] = schemaVers,
["file_size"] = size,
},
};
await writer.WriteAsync(obj.ToJsonString(Utils.JsonOpts));
}
var db = zip.CreateEntryFromFile(App.Config.DatabaseFile, "database.sqlite3", CompressionLevel.SmallestSize);
} else {
File.Copy(App.Config.DatabaseFile, filename, true);
@@ -22,10 +54,33 @@ namespace Elwig.Helpers.Export {
if (zipFile) {
File.Delete(filename);
using var zip = ZipFile.Open(filename, ZipArchiveMode.Create);
var entry = zip.CreateEntry("database.sql", CompressionLevel.SmallestSize);
using var stream = entry.Open();
using var writer = new StreamWriter(stream, Utils.UTF8);
await ExportSql(writer);
var version = zip.CreateEntry("version", CompressionLevel.NoCompression);
using (var writer = new StreamWriter(version.Open(), Utils.UTF8)) {
await writer.WriteAsync("elwig:1");
}
var (applId, userVers, schemaVers, size) = await GetMeta();
var meta = zip.CreateEntry("meta.json", CompressionLevel.NoCompression);
using (var writer = new StreamWriter(meta.Open(), Utils.UTF8)) {
var obj = new JsonObject {
["timestamp"] = $"{DateTime.UtcNow:yyyy-MM-ddTHH:mm:ssZ}",
["zwstid"] = App.ZwstId,
["device"] = Environment.MachineName,
["database"] = new JsonObject {
["application_id"] = applId,
["user_version"] = userVers,
["schema_version"] = schemaVers,
["file_size"] = size,
},
};
await writer.WriteAsync(obj.ToJsonString(Utils.JsonOpts));
}
var sql = zip.CreateEntry("database.sql", CompressionLevel.SmallestSize);
using (var writer = new StreamWriter(sql.Open(), Utils.UTF8)) {
await ExportSql(writer);
}
} else {
using var stream = File.OpenWrite(filename);
using var writer = new StreamWriter(stream, Utils.UTF8);