[ric-oliv]

The generic host's UseSentry now starts the SDK while the host is built, even when the app clears or replaces the logger providers. Until now, Sentry's logger provider was what started it during Build(). Calling ClearProviders() after UseSentry, or replacing the logger factory with Services.AddSerilog(), left nothing to start the SDK before the host started. A host that was built but never started captured nothing, and code in Program.cs between Build() and Run() ran without Sentry. One visible effect for those apps is that an invalid DSN now throws from Build() instead of StartAsync(), like it already did for apps with the default logging.

SentrySdkInitializer is an IConfigureOptions<HostOptions> that resolves Func<IHub>, which is what starts the SDK. The host's constructor reads IOptions<HostOptions> from Microsoft.Extensions.Hosting 3.1 onward, so it runs during Build() on both builders, whatever the app did to its logging. SentryHostedService still resolves Func<IHub> as well. If a host ever stopped reading HostOptions in its constructor, the SDK would still start before the other hosted services. The two start-order tests now remove the initializer to keep checking that.

HostOptions lives in Microsoft.Extensions.Hosting, not in the Abstractions package, so Sentry.Extensions.Hosting now depends on it: 3.1.0 for netstandard2.0 and 8.0.0 for .NET 8 and later. Generic host apps already reference it. I used the lowest version each target needs instead of one per runtime. Pinning 11.0.0 for net11.0 broke our GenericHost sample, which references 9.0.8, with NU1605, and apps that pin an older version would break the same way. In CI only the Windows net48 job runs the netstandard2.0 build, so I also checked it locally against Microsoft.Extensions.Hosting 3.1.0.

This is part 1 of the fix discussed in #5755. Logger providers removed by ClearProviders() still don't come back, and ASP.NET Core and Blazor WebAssembly aren't covered yet.

Refs #5755

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 76.18%. Comparing base (2194c92) to head (74f5618).
⚠️ Report is 1 commits behind head on version7.

Additional details and impacted files

@@            Coverage Diff            @@
##           version7    #5772   +/-   ##
=========================================
  Coverage     76.17%   76.18%           
=========================================
  Files           526      527    +1     
  Lines         19265    19268    +3     
  Branches       3729     3729           
=========================================
+ Hits          14676    14679    +3     
  Misses         3734     3734           
  Partials        855      855           

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[jamescrosswell]

LGTM