flashwave
5a7756894b
Reintroduces separate contexts for users, channels, connections (now split into sessions and connections) and user-channel associations. It builds which is as much assurance as I can give about the stability of this commit, but its also the bare minimum of what i like to commit sooooo A lot of things still need to be broadcast through events throughout the application in order to keep states consistent but we'll cross that bridge when we get to it. I really need to stop using that phrase thingy, I'm overusing it.
54 lines
2.4 KiB
C#
54 lines
2.4 KiB
C#
using Microsoft.Extensions.Logging;
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using SharpChat.Messages;
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using ZLogger;
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namespace SharpChat.Storage;
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public class StorageMigrator(ILogger logger, StorageBackend source, StorageBackend target) {
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public async Task Migrate(CancellationToken cancellationToken) {
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try {
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logger.ZLogInformation($"Converting from {source.GetType().Name} to {target.GetType().Name}!");
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logger.ZLogInformation($"Ensuring both source and target are fully upgraded...");
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if(cancellationToken.IsCancellationRequested) return;
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await source.UpgradeStorage();
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if(cancellationToken.IsCancellationRequested) return;
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await target.UpgradeStorage();
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if(cancellationToken.IsCancellationRequested) return;
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logger.ZLogInformation($"Creating message storage instances...");
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MessageStorage sourceMsgs = source.CreateMessageStorage();
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MessageStorage targetMsgs = target.CreateMessageStorage();
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if(cancellationToken.IsCancellationRequested) return;
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long msgCount = await sourceMsgs.CountMessages(includeDeleted: true);
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if(msgCount < 1) {
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logger.ZLogInformation($"No messages to migrate, skipping...");
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} else {
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logger.ZLogInformation($"Migrating {msgCount} message{(msgCount == 1 ? "" : "s")}...");
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long migrated = 0;
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DateTimeOffset lastReport = DateTimeOffset.UtcNow;
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IEnumerable<Message> msgs = await sourceMsgs.GetMessages(take: null, includeDeleted: true);
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foreach(Message msg in msgs) {
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if(cancellationToken.IsCancellationRequested) break;
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await targetMsgs.LogMessage(msg);
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++migrated;
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if(DateTimeOffset.UtcNow - lastReport > TimeSpan.FromMinutes(1)) {
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lastReport = DateTimeOffset.UtcNow;
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double completion = (double)migrated / msgCount;
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logger.ZLogInformation($"{migrated} of {msgCount} message{(migrated == 1 ? "" : "s")} migrated ({completion:P2})...");
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}
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}
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logger.ZLogInformation($"Migrated {migrated} message{(migrated == 1 ? "" : "s")}!");
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}
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} catch(Exception ex) {
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logger.ZLogError($"Error during migration: {ex}");
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throw;
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}
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}
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}
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