Publish ITWorx Pulse source

2026-09-03 02:09:19 +02:00
commit bd774932d5
614 changed files with 77116 additions and 0 deletions
@@ -0,0 +1,246 @@
+package incidentapi
+
+import (
+	"encoding/json"
+	"errors"
+	"io"
+	"net/http"
+	"strconv"
+	"strings"
+
+	"github.com/itworx/pulse/internal/audit"
+	"github.com/itworx/pulse/internal/auth"
+	"github.com/itworx/pulse/internal/correlation"
+	"github.com/itworx/pulse/internal/incident"
+	"github.com/itworx/pulse/internal/problem"
+)
+
+type Handler struct {
+	Store incident.Store
+	Audit audit.Store
+}
+
+func (h Handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	principal, ok := auth.PrincipalFromContext(r.Context())
+	if !ok {
+		fail(w, r, http.StatusUnauthorized, "UNAUTHORIZED", "Authentication required.")
+		return
+	}
+	path := strings.Trim(strings.TrimPrefix(r.URL.Path, "/api/v1/incidents"), "/")
+	if path == "" && r.Method == http.MethodGet {
+		h.list(w, r)
+		return
+	}
+	parts := strings.Split(path, "/")
+	if len(parts) == 1 && parts[0] != "" && r.Method == http.MethodPatch {
+		if !auth.Allows(principal.Role, auth.PermissionOperate) {
+			fail(w, r, http.StatusForbidden, "FORBIDDEN", "Incident ownership is not allowed for this role.")
+			return
+		}
+		h.updateOwner(w, r, parts[0], principal.Subject)
+		return
+	}
+	if len(parts) == 2 && parts[1] == "notes" && (r.Method == http.MethodGet || r.Method == http.MethodPost) {
+		if r.Method == http.MethodPost && !auth.Allows(principal.Role, auth.PermissionOperate) {
+			fail(w, r, http.StatusForbidden, "FORBIDDEN", "Incident notes are not allowed for this role.")
+			return
+		}
+		if r.Method == http.MethodGet {
+			h.listNotes(w, r, parts[0])
+		} else {
+			h.addNote(w, r, parts[0], principal.Subject)
+		}
+		return
+	}
+	if len(parts) == 1 && parts[0] != "" && r.Method == http.MethodGet {
+		h.get(w, r, parts[0])
+		return
+	}
+	if len(parts) == 3 && parts[1] == "alerts" && parts[2] != "" && (r.Method == http.MethodPost || r.Method == http.MethodDelete) {
+		if !auth.Allows(principal.Role, auth.PermissionOperate) {
+			fail(w, r, http.StatusForbidden, "FORBIDDEN", "Incident association is not allowed for this role.")
+			return
+		}
+		if r.Method == http.MethodPost {
+			h.associate(w, r, parts[0], parts[2], principal.Subject)
+			return
+		}
+		h.disassociate(w, r, parts[0], parts[2], principal.Subject)
+		return
+	}
+	fail(w, r, http.StatusNotFound, "NOT_FOUND", "Incident route not found.")
+}
+
+func (h Handler) list(w http.ResponseWriter, r *http.Request) {
+	limit := 100
+	if value := r.URL.Query().Get("limit"); value != "" {
+		parsed, err := strconv.Atoi(value)
+		if err != nil || parsed < 1 || parsed > 100 {
+			fail(w, r, http.StatusBadRequest, "INVALID_LIMIT", "The incident limit must be between 1 and 100.")
+			return
+		}
+		limit = parsed
+	}
+	status := incident.Status(r.URL.Query().Get("status"))
+	items, err := h.Store.List(r.Context(), limit, status)
+	if err != nil {
+		h.repositoryFailure(w, r, err)
+		return
+	}
+	write(w, http.StatusOK, map[string]any{"items": items})
+}
+
+func (h Handler) get(w http.ResponseWriter, r *http.Request, id string) {
+	item, err := h.Store.Get(r.Context(), id)
+	if err != nil {
+		h.repositoryFailure(w, r, err)
+		return
+	}
+	notes, notesErr := h.Store.ListNotes(r.Context(), id, 100)
+	if notesErr != nil {
+		h.repositoryFailure(w, r, notesErr)
+		return
+	}
+	item.Notes = notes
+	write(w, http.StatusOK, map[string]any{"incident": item})
+}
+
+func (h Handler) associate(w http.ResponseWriter, r *http.Request, incidentID, alertID, actor string) {
+	var request struct {
+		Rationale  string  `json:"rationale"`
+		Confidence float64 `json:"confidence"`
+	}
+	if err := decode(r, &request); err != nil {
+		fail(w, r, http.StatusBadRequest, "INVALID_ASSOCIATION", "The incident association document is invalid.")
+		return
+	}
+	if request.Confidence == 0 {
+		request.Confidence = 1
+	}
+	item, duplicate, err := h.Store.AssociateAlert(r.Context(), incidentID, alertID, strings.TrimSpace(request.Rationale), request.Confidence, actor)
+	if err != nil {
+		h.repositoryFailure(w, r, err)
+		return
+	}
+	if h.Audit != nil {
+		result := "success"
+		if duplicate {
+			result = "idempotent"
+		}
+		if err := h.Audit.Append(r.Context(), audit.Event{Actor: actor, Action: "incident.alert.associate", ResourceType: "incident", ResourceID: incidentID, Result: result, CorrelationID: correlation.FromContext(r.Context()), After: map[string]any{"alertId": alertID, "rationale": request.Rationale, "confidence": request.Confidence, "manual": true, "duplicate": duplicate}}); err != nil {
+			fail(w, r, http.StatusServiceUnavailable, "AUDIT_UNAVAILABLE", "The audit event could not be recorded.")
+			return
+		}
+	}
+	write(w, http.StatusOK, map[string]any{"association": item, "duplicate": duplicate})
+}
+
+func (h Handler) disassociate(w http.ResponseWriter, r *http.Request, incidentID, alertID, actor string) {
+	if err := h.Store.DisassociateAlert(r.Context(), incidentID, alertID); err != nil {
+		h.repositoryFailure(w, r, err)
+		return
+	}
+	if h.Audit != nil {
+		if err := h.Audit.Append(r.Context(), audit.Event{Actor: actor, Action: "incident.alert.disassociate", ResourceType: "incident", ResourceID: incidentID, Result: "success", CorrelationID: correlation.FromContext(r.Context()), After: map[string]any{"alertId": alertID, "manual": true}}); err != nil {
+			fail(w, r, http.StatusServiceUnavailable, "AUDIT_UNAVAILABLE", "The audit event could not be recorded.")
+			return
+		}
+	}
+	w.WriteHeader(http.StatusNoContent)
+}
+
+func (h Handler) updateOwner(w http.ResponseWriter, r *http.Request, id, actor string) {
+	var request struct {
+		OwnerUserID string `json:"ownerUserId"`
+		Revision    int64  `json:"revision"`
+	}
+	if err := decode(r, &request); err != nil || request.Revision < 1 {
+		fail(w, r, http.StatusBadRequest, "INVALID_INCIDENT", "A valid owner and revision document is required.")
+		return
+	}
+	item, err := h.Store.UpdateOwner(r.Context(), id, strings.TrimSpace(request.OwnerUserID), request.Revision)
+	if err != nil {
+		h.repositoryFailure(w, r, err)
+		return
+	}
+	if h.Audit != nil {
+		if err := h.Audit.Append(r.Context(), audit.Event{Actor: actor, Action: "incident.owner.update", ResourceType: "incident", ResourceID: id, Result: "success", CorrelationID: correlation.FromContext(r.Context()), After: map[string]any{"ownerUserId": request.OwnerUserID, "revision": item.Revision}}); err != nil {
+			fail(w, r, http.StatusServiceUnavailable, "AUDIT_UNAVAILABLE", "The audit event could not be recorded.")
+			return
+		}
+	}
+	write(w, http.StatusOK, map[string]any{"incident": item})
+}
+
+func (h Handler) listNotes(w http.ResponseWriter, r *http.Request, id string) {
+	items, err := h.Store.ListNotes(r.Context(), id, 100)
+	if err != nil {
+		h.repositoryFailure(w, r, err)
+		return
+	}
+	write(w, http.StatusOK, map[string]any{"items": items})
+}
+
+func (h Handler) addNote(w http.ResponseWriter, r *http.Request, id, actor string) {
+	var request struct {
+		Body string `json:"body"`
+	}
+	if err := decode(r, &request); err != nil {
+		fail(w, r, http.StatusBadRequest, "INVALID_NOTE", "The incident note is invalid.")
+		return
+	}
+	note, err := h.Store.AddNote(r.Context(), id, actor, request.Body)
+	if err != nil {
+		h.repositoryFailure(w, r, err)
+		return
+	}
+	if h.Audit != nil {
+		if err := h.Audit.Append(r.Context(), audit.Event{Actor: actor, Action: "incident.note.create", ResourceType: "incident", ResourceID: id, Result: "success", CorrelationID: correlation.FromContext(r.Context()), After: map[string]any{"noteId": note.ID}}); err != nil {
+			fail(w, r, http.StatusServiceUnavailable, "AUDIT_UNAVAILABLE", "The audit event could not be recorded.")
+			return
+		}
+	}
+	write(w, http.StatusCreated, map[string]any{"note": note})
+}
+func (h Handler) repositoryFailure(w http.ResponseWriter, r *http.Request, err error) {
+	switch {
+	case errors.Is(err, incident.ErrInvalid):
+		fail(w, r, http.StatusBadRequest, "INVALID_INCIDENT", "The incident request is invalid.")
+	case errors.Is(err, incident.ErrNotFound):
+		fail(w, r, http.StatusNotFound, "NOT_FOUND", "The incident was not found.")
+	case errors.Is(err, incident.ErrConflict):
+		fail(w, r, http.StatusConflict, "CONFLICT", "The incident changed before this operation was applied.")
+	case errors.Is(err, incident.ErrUnavailable):
+		fail(w, r, http.StatusServiceUnavailable, "DATABASE_UNAVAILABLE", "Incidents are unavailable.")
+	default:
+		fail(w, r, http.StatusInternalServerError, "INCIDENT_REQUEST_FAILED", "The incident request failed.")
+	}
+}
+func decode(r *http.Request, target any) error {
+	body, err := io.ReadAll(io.LimitReader(r.Body, 1<<20+1))
+	if err != nil {
+		return err
+	}
+	defer r.Body.Close()
+	if len(body) > 1<<20 {
+		return errors.New("request too large")
+	}
+	decoder := json.NewDecoder(strings.NewReader(string(body)))
+	decoder.DisallowUnknownFields()
+	if err := decoder.Decode(target); err != nil {
+		return err
+	}
+	var extra any
+	if err := decoder.Decode(&extra); err != io.EOF {
+		return errors.New("multiple JSON values")
+	}
+	return nil
+}
+func fail(w http.ResponseWriter, r *http.Request, status int, code, detail string) {
+	problem.Write(w, r, status, code, http.StatusText(status), detail, nil)
+}
+func write(w http.ResponseWriter, status int, value any) {
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(status)
+	_ = json.NewEncoder(w).Encode(value)
+}