private static async Task <UpdateResult[]> CrawlReleases(string[] channels, ILogger log, CancellationToken ct)
{
var config = new ConfigurationBuilder()
.AddJsonFile("host.json", optional: true, reloadOnChange: true)
.AddJsonFile("local.settings.json", optional: true, reloadOnChange: true)
.AddEnvironmentVariables()
.Build();
using (var hc = new HealthchecksApi(config, log))
using (var gitHub = new GitHubApi())
using (var azure = new AzureDevOpsApi(config["azureDevOpsAuth"]))
{
var releases = await gitHub.GetDuplicatiReleases(ct);
var variables = await azure.GetBuildVariables(ct);
var @default = variables["default"];
return(await Task.WhenAll(channels.Select(TryUpdateChannel)));
async Task <UpdateResult> TryUpdateChannel(string channel)
{
var status = "parsing inputs";
try
{
status = "searching release";
if (!releases.TryGetValue(channel, out var release))
{
throw new Exception($"Cannot find release for {channel}");
}
status = "reporting start to healthchecks";
await hc.Start(channel, ct); // we report to HC only if we found a release. This prevent issue with the still awaited "stable" version :)
status = "searching variable group";
if (!variables.TryGetValue(channel, out var group))
{
throw new Exception($"Cannot find build variables for {channel}");
}
status = "analyzing build config vs. found release";
var install = release.data.Assets.FirstOrDefault(a => a.Url.EndsWith(release.version + ".zip", StringComparison.OrdinalIgnoreCase))?.Url;
var version = release.version;
if (install.IsNullOrWhiteSpace() || version.IsNullOrWhiteSpace())
{
throw new Exception($"The found release is invalid for {channel} (Failed to get required values 'install' and 'version')");
}
var hasChanged = false;
hasChanged |= group.TryUpdate("install", install);
hasChanged |= group.TryUpdate("version", version);
hasChanged |= group.TryUpdate("url", release.data.Url);
hasChanged |= group.TryUpdate("notes", release.data.Notes);
if (hasChanged)
{
status = "updating build variables";
await azure.UpdateBuildVariables(group, ct);
if (@default["channel"] == channel)
{
status = "updating **default** build variables";
@default.TryUpdate("install", install);
@default.TryUpdate("version", version);
@default.TryUpdate("url", release.data.Url);
@default.TryUpdate("notes", release.data.Notes);
await azure.UpdateBuildVariables(@default, ct);
status = "queuing new **default** build";
await azure.QueueBuild("default", ct); // So the image is tagged as 'latest'
}
else
{
status = "queuing new build";
await azure.QueueBuild(channel, ct);
}
status = "reporting success to healthchecks";
await hc.Report(channel, ct);
return(UpdateResult.Succeeded(channel));
}
else
{
status = "reporting success (not changed) to healthchecks";
await hc.Report(channel, ct);
return(UpdateResult.NotChanged(channel));
}
}
catch (Exception e)
{
await hc.Failed(channel, ct); // cannot fail
return(UpdateResult.Failed(channel, status, e));
}
}
}
}