feat(agent) multi-driver db monitoring, hot-plug config, release pipeline

internal/sender/http.go

@@ -7,30 +7,44 @@ import (
 	"net/http"
 	"time"
 
+	"bugs.watch/agent/internal/config"
 	"bugs.watch/agent/internal/aggregate"
 )
 
 type HTTPSender struct {
 	client   *http.Client
 	endpoint string
+	token    string
+	hostID   string
+	env      string
 }
 
-func NewHTTPSender(endpoint string) *HTTPSender {
+func NewHTTPSender(cfg config.Config) *HTTPSender {
 	return &HTTPSender{
 		client: &http.Client{
 			Timeout: 5 * time.Second,
 		},
-		endpoint: endpoint,
+		endpoint: cfg.Endpoint + "/api/v1/agents/" + cfg.AgentID,
+		token:    cfg.APIToken,
+		hostID:   cfg.HostID,
+		env:      cfg.Env,
 	}
 }
 
 func (s *HTTPSender) Send(ctx context.Context, snap aggregate.Snapshot) error {
 	payload := SnapshotPayload{
-		Timestamp: snap.Timestamp,
-		CPUAvg:    snap.CPUAvg,
-		MemAvg:    snap.MemAvg,
-		DiskAvg:   snap.DiskAvg,
-		Uptime:    snap.Uptime,
+		Timestamp:        snap.Timestamp,
+		CPUAvg:           snap.CPUAvg,
+		MemAvg:           snap.MemAvg,
+		DiskAvg:          snap.DiskAvg,
+		Uptime:           snap.Uptime,
+		HostID:           s.hostID,
+		Environment:      s.env,
+		DBDriver:         snap.DBDriver,
+		DBConnPct:        snap.DBConnPct,
+		DBThreadsRunning: snap.DBThreadsRunning,
+		DBSlowQueries:    snap.DBSlowQueries,
+		DBSizeBytes:      snap.DBSizeBytes,
 	}
 
 	body, err := json.Marshal(payload)
@@ -40,7 +54,7 @@ func (s *HTTPSender) Send(ctx context.Context, snap aggregate.Snapshot) error {
 
 	req, err := http.NewRequestWithContext(
 		ctx,
-		http.MethodPost,
+		http.MethodPut,
 		s.endpoint,
 		bytes.NewReader(body),
 	)
@@ -49,6 +63,7 @@ func (s *HTTPSender) Send(ctx context.Context, snap aggregate.Snapshot) error {
 	}
 
 	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("Authorization", "Bearer " + s.token)
 
 	resp, err := s.client.Do(req)
 	if err != nil {

internal/sender/payload.go

@@ -9,6 +9,16 @@ type SnapshotPayload struct {
 	CPUAvg  float64 `json:"cpu_avg"`
 	MemAvg  float64 `json:"mem_avg"`
 	DiskAvg float64 `json:"disk_avg"`
+	Uptime  uint64  `json:"uptime"`
 
-	Uptime uint64 `json:"uptime"`
+	HostID      string `json:"host_id,omitempty"`
+	Environment string `json:"environment,omitempty"`
+
+	// Optional — only present when DB monitoring is enabled.
+	// DBDriver is a numeric identifier: 1=mysql/mariadb 2=postgres 3=redis 4=mongodb 5=sqlite
+	DBDriver         *uint8   `json:"db_driver,omitempty"`
+	DBConnPct        *float64 `json:"db_conn_pct,omitempty"`
+	DBThreadsRunning *float64 `json:"db_threads_running,omitempty"`
+	DBSlowQueries    *uint64  `json:"db_slow_queries,omitempty"`
+	DBSizeBytes      *uint64  `json:"db_size_bytes,omitempty"`
 }