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Add KVM provider transport: SSH-forwarded libvirt connections and error classification

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Per-host connection pool over SSH with the libvirt unix socket forwarded
through the session, lazy dial and redial after disconnect, context
cancellation for go-libvirt's context-less RPCs, handshake deadline and
SSH keepalives. Error classification onto the provider taxonomy. Tested
with a fake dialer and an in-process SSH server that forwards unix sockets.

Step 3 of docs/plans/2026-09-04-1404-kvm-provider.md.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
This commit is contained in:
kacerr
2026-09-10 19:13:51 +00:00
co-authored by Claude Fable 5.1
parent 162607dfe2
commit 6322184d50
7 changed files with 1059 additions and 2 deletions
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@@ -28,6 +28,8 @@ github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSs
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM=
github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/digitalocean/go-libvirt v0.0.0-20260814190004-1a83157e1858 h1:8xCFt73OddCD5WXxoYidJBWp3bJMC+CpE7Zwf5tcwk8=
github.com/digitalocean/go-libvirt v0.0.0-20260814190004-1a83157e1858/go.mod h1:qb0Ofa71d3oXARQf633h2tNaeBxLsVxuDp+jcsVO2+4=
github.com/emicklei/go-restful/v3 v3.13.0 h1:C4Bl2xDndpU6nJ4bc1jXd+uTmYPVUwkD6bFY/oTyCes=
github.com/emicklei/go-restful/v3 v3.13.0/go.mod h1:6n3XBCmQQb25CM2LCACGz8ukIrRry+4bhvbpWn3mrbc=
github.com/evanphx/json-patch v0.5.2 h1:xVCHIVMUu1wtM/VkR9jVZ45N3FhZfYMMYGorLCR8P3k=