Giuliano Silvestro
29f4ad97d6
Wire a full tenant deployment as one orchestrated, compensating saga: mark → create droplet → wait active → register in inventory → link to deployment → point DNS → activate. A failure anywhere rolls the whole thing back — droplet destroyed, DNS reverted, deployment moved to cancelled. - New lifecycle state `provisioning`; deployments created via the provision path enter here and only reach `active` once the saga's ActivateDeployment step runs. - Four new steps: MarkDeploymentProvisioning (owns the deployment's failure state), LinkDeploymentResource, PointDeploymentDns, ActivateDeployment. - Provisioning.provision_deployment/2 assembles + starts the saga. - DeploymentController: POST /deployments with provision:true creates in `provisioning` and kicks the saga (202); GET /deployments/:id now returns the provisioning saga + per-step progress. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
58 lines
1.5 KiB
Elixir
58 lines
1.5 KiB
Elixir
defmodule ArcadiaCloud.Provisioning.Steps.MarkDeploymentProvisioning do
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@moduledoc """
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First step of the deployment-provisioning choreography.
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Forward: a no-op — `Provisioning.provision_deployment/2` already
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created the deployment row in the `provisioning` state. Having this
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step at index 0 gives the saga a compensation hook that owns the
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deployment's failure state: if ANY later step fails, the runner walks
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compensation back to here and we move the deployment to `cancelled`.
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Without this step a mid-saga failure would leave the deployment stuck
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in `provisioning` forever.
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"""
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@behaviour ArcadiaCloud.Provisioning.Step
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require Logger
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alias ArcadiaCloud.Deployments
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@impl true
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def name, do: "mark_deployment_provisioning"
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@impl true
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def execute(state), do: {:ok, state}
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@impl true
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def compensate(state) do
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case deployment(state) do
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nil ->
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:ok
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deployment ->
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case Deployments.transition_state(deployment, "cancelled",
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reason: "provision_failed",
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actor: "saga:#{state.saga_id}"
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) do
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{:ok, _} ->
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:ok
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{:error, reason} ->
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Logger.warning(
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"[saga #{state.saga_id}] could not cancel deployment on rollback: #{inspect(reason)}"
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)
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:ok
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end
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end
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end
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defp deployment(state) do
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case state.saga && state.saga.deployment_id do
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nil -> nil
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id -> Deployments.get_deployment(id)
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end
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end
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end
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