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https://github.com/siderolabs/talos.git
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0081ac5fac
This extracts Docker Talos cluster provisioner as common code which might be shared between `osctl cluster` and integration-test. There should be almost no functional changes. As proof of concept, abstract cluster readiness checks were implemented based on provisioned cluster state. It implements same checks as `basic-integration.sh` in pure Go via Talos/K8s clients. `conditions` package was promoted from machined-internal to `internal/pkg` as it is used to run the checks. Signed-off-by: Andrey Smirnov <smirnov.andrey@gmail.com>
77 lines
1.7 KiB
Go
77 lines
1.7 KiB
Go
// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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// Package check provides set of checks to verify cluster readiness.
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package check
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import (
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"context"
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"time"
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"github.com/talos-systems/talos/internal/pkg/conditions"
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"github.com/talos-systems/talos/internal/pkg/provision"
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)
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const updateInterval = 100 * time.Millisecond
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// ClusterCheck implements a function which returns condition based on ClusterAccess.
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type ClusterCheck func(provision.ClusterAccess) conditions.Condition
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// Reporter presents wait progress.
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//
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// It is supposed that reporter drops duplicate messages.
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type Reporter interface {
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Update(check conditions.Condition)
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}
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// Wait run the checks against the cluster and waits for the full set to succeed.
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//
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// Context ctx might have a timeout set to limit overall wait time.
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// Each check might define its own timeout.
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func Wait(ctx context.Context, cluster provision.ClusterAccess, checks []ClusterCheck, reporter Reporter) error {
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for _, check := range checks {
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select {
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case <-ctx.Done():
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return ctx.Err()
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default:
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}
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condition := check(cluster)
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errCh := make(chan error, 1)
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go func(condition conditions.Condition) {
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errCh <- condition.Wait(ctx)
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}(condition)
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var err error
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func() {
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ticker := time.NewTicker(updateInterval)
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defer ticker.Stop()
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// report initial state
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reporter.Update(condition)
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// report last state
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defer reporter.Update(condition)
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for {
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select {
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case err = <-errCh:
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return
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case <-ticker.C:
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reporter.Update(condition)
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}
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}
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}()
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if err != nil {
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return err
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}
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}
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return nil
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}
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