clawbot
a70b173a48
check / check (push) Canceled after 0s
The health check answered ok while every DNS lookup failed, as on a network that intercepts DNS queries. A lookup whose root servers give no usable reply now fails with ErrNoRootServerAnswered. At the end of each round of DNS checks the watcher records whether every lookup failed with it or with ErrIntercepted; the health check then gives status error, and /.well-known/healthcheck and /health answer 503. Until the first round finishes it stays ok. The health check now depends on the watcher, so fx builds the watcher first: its first round starts before the HTTP server listens, and the server tests' fx graph includes it. NewWithRootServers lets tests start a resolver's walks at real servers that are not root servers. Model: opus-5-5
27 lines
614 B
Go
27 lines
614 B
Go
package handlers
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import (
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"net/http"
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"sneak.berlin/go/dnswatcher/internal/healthcheck"
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)
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// HandleHealthCheck returns the health check handler. It answers 503
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// Service Unavailable when the health check's status is error, so that
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// a container health check fails, and 200 OK otherwise.
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func (h *Handlers) HandleHealthCheck() http.HandlerFunc {
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return func(
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writer http.ResponseWriter,
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request *http.Request,
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) {
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resp := h.hc.Check()
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code := http.StatusOK
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if resp.Status == healthcheck.StatusError {
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code = http.StatusServiceUnavailable
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}
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h.respondJSON(writer, request, resp, code)
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}
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}
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