William Valentin
256b841cbf
Adds Go microservices (ingest-gateway, event-processor, query-api, web-ui), NATS+Postgres wiring, initial schema/init job, ingress manifests for LAN+tailnet, and a multi-arch image build script.
57 lines
1.6 KiB
Go
57 lines
1.6 KiB
Go
package main
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import (
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"encoding/json"
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"io"
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"log"
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"net/http"
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"os"
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)
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func main() {
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addr := envDefault("AGENTMON_UI_ADDR", ":8082")
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queryAPIBase := envDefault("AGENTMON_QUERY_BASE", "http://query-api")
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mux := http.NewServeMux()
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mux.HandleFunc("/healthz", func(w http.ResponseWriter, r *http.Request) {
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w.WriteHeader(http.StatusOK)
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_, _ = w.Write([]byte("ok"))
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})
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mux.HandleFunc("/api/events", func(w http.ResponseWriter, r *http.Request) {
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resp, err := http.Get(queryAPIBase + "/v1/events?limit=100")
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if err != nil {
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w.WriteHeader(http.StatusBadGateway)
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_, _ = w.Write([]byte("query-api unreachable"))
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return
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}
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defer resp.Body.Close()
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w.Header().Set("Content-Type", "application/json")
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w.WriteHeader(resp.StatusCode)
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_, _ = io.Copy(w, resp.Body)
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})
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mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
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w.Header().Set("Content-Type", "text/html; charset=utf-8")
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payload, _ := json.Marshal(map[string]any{"query_api": queryAPIBase})
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_, _ = w.Write([]byte("<html><body><h1>agentmon</h1><p>Recent events:</p><pre id='out'>loading...</pre>"))
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_, _ = w.Write([]byte("<script>\n"))
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_, _ = w.Write([]byte("const cfg=" + string(payload) + ";\n"))
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_, _ = w.Write([]byte("fetch('/api/events').then(r=>r.json()).then(j=>{document.getElementById('out').textContent=JSON.stringify(j,null,2);}).catch(e=>{document.getElementById('out').textContent=String(e);});\n"))
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_, _ = w.Write([]byte("</script></body></html>"))
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})
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log.Printf("web-ui listening on %s", addr)
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log.Fatal(http.ListenAndServe(addr, mux))
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}
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func envDefault(key, def string) string {
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if v := os.Getenv(key); v != "" {
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return v
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}
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return def
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}
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