Use signed path for camera snapshot (#3138)

hassio/src/dialogs/snapshot/dialog-hassio-snapshot.ts

@@ -6,7 +6,7 @@ import "@polymer/paper-icon-button/paper-icon-button";
 import "@polymer/paper-input/paper-input";
 import { html } from "@polymer/polymer/lib/utils/html-tag";
 import { PolymerElement } from "@polymer/polymer/polymer-element";
-import { getSignedPath } from "../../../../src/auth/data";
+import { getSignedPath } from "../../../../src/data/auth";
 
 import "../../../../src/resources/ha-style";
 import "../../../../src/components/dialog/ha-paper-dialog";

src/auth/data.ts

@@ -1,7 +0,0 @@
-import { HomeAssistant } from "../types";
-import { SignedPath } from "./types";
-
-export const getSignedPath = (
-  hass: HomeAssistant,
-  path: string
-): Promise<SignedPath> => hass.callWS({ type: "auth/sign_path", path });

src/auth/types.ts

@@ -1,3 +0,0 @@
-export interface SignedPath {
-  path: string;
-}

src/cards/ha-camera-card.js

@@ -5,6 +5,7 @@ import { PolymerElement } from "@polymer/polymer/polymer-element";
 import computeStateName from "../common/entity/compute_state_name";
 import EventsMixin from "../mixins/events-mixin";
 import LocalizeMixin from "../mixins/localize-mixin";
+import { fetchThumbnailUrlWithCache } from "../data/camera";
 
 const UPDATE_INTERVAL = 10000; // ms
 /*
@@ -54,6 +55,8 @@ class HaCameraCard extends LocalizeMixin(EventsMixin(PolymerElement)) {
           src="[[cameraFeedSrc]]"
           class="camera-feed"
           alt="[[_computeStateName(stateObj)]]"
+          on-load="_imageLoaded"
+          on-error="_imageError"
         />
       </template>
       <div class="caption">
@@ -98,23 +101,23 @@ class HaCameraCard extends LocalizeMixin(EventsMixin(PolymerElement)) {
     clearInterval(this.timer);
   }
 
+  _imageLoaded() {
+    this.imageLoaded = true;
+  }
+
+  _imageError() {
+    this.imageLoaded = false;
+  }
+
   cardTapped() {
     this.fire("hass-more-info", { entityId: this.stateObj.entity_id });
   }
 
   async updateCameraFeedSrc() {
-    try {
+    this.cameraFeedSrc = await fetchThumbnailUrlWithCache(
-      const { content_type: contentType, content } = await this.hass.callWS({
+      this.hass,
-        type: "camera_thumbnail",
+      this.stateObj.entity_id
-        entity_id: this.stateObj.entity_id,
+    );
-      });
-      this.setProperties({
-        imageLoaded: true,
-        cameraFeedSrc: `data:${contentType};base64, ${content}`,
-      });
-    } catch (err) {
-      this.imageLoaded = false;
-    }
   }
 
   _computeStateName(stateObj) {

src/data/auth.ts

@@ -1,3 +1,5 @@
+import { HomeAssistant } from "../types";
+
 export interface AuthProvider {
   name: string;
   id: string;
@@ -7,3 +9,12 @@ export interface AuthProvider {
 export interface Credential {
   type: string;
 }
+
+export interface SignedPath {
+  path: string;
+}
+
+export const getSignedPath = (
+  hass: HomeAssistant,
+  path: string
+): Promise<SignedPath> => hass.callWS({ type: "auth/sign_path", path });

src/data/camera.ts

@@ -1,5 +1,6 @@
 import { HomeAssistant, CameraEntity } from "../types";
 import { timeCachePromiseFunc } from "../common/util/time-cache-function-promise";
+import { getSignedPath } from "./auth";
 
 export const CAMERA_SUPPORT_ON_OFF = 1;
 export const CAMERA_SUPPORT_STREAM = 2;
@@ -22,16 +23,29 @@ export const computeMJPEGStreamUrl = (entity: CameraEntity) =>
     entity.attributes.access_token
   }`;
 
-export const fetchThumbnailWithCache = (
+export const fetchThumbnailUrlWithCache = (
   hass: HomeAssistant,
   entityId: string
-) => timeCachePromiseFunc("_cameraTmb", 9000, fetchThumbnail, hass, entityId);
+) =>
+  timeCachePromiseFunc(
+    "_cameraTmbUrl",
+    9000,
+    fetchThumbnailUrl,
+    hass,
+    entityId
+  );
 
-export const fetchThumbnail = (hass: HomeAssistant, entityId: string) =>
+export const fetchThumbnailUrl = (hass: HomeAssistant, entityId: string) =>
-  hass.callWS<CameraThumbnail>({
+  getSignedPath(hass, `/api/camera_proxy/${entityId}`).then(({ path }) => path);
+
+export const fetchThumbnail = (hass: HomeAssistant, entityId: string) => {
+  // tslint:disable-next-line: no-console
+  console.warn("This method has been deprecated.");
+  return hass.callWS<CameraThumbnail>({
     type: "camera_thumbnail",
     entity_id: entityId,
   });
+};
 
 export const fetchStreamUrl = (
   hass: HomeAssistant,

src/panels/lovelace/components/hui-image.ts

@@ -17,8 +17,7 @@ import {
 import { HomeAssistant, CameraEntity } from "../../../types";
 import { styleMap } from "lit-html/directives/style-map";
 import { classMap } from "lit-html/directives/class-map";
-import { b64toBlob } from "../../../common/file/b64-to-blob";
+import { fetchThumbnailUrlWithCache } from "../../../data/camera";
-import { fetchThumbnailWithCache } from "../../../data/camera";
 
 const UPDATE_INTERVAL = 10000;
 const DEFAULT_FILTER = "grayscale(100%)";
@@ -197,21 +196,20 @@ export class HuiImage extends LitElement {
     if (!this.hass || !this.cameraImage) {
       return;
     }
-    try {
+
-      const {
+    const cameraState = this.hass.states[this.cameraImage] as
-        content_type: contentType,
+      | CameraEntity
-        content,
+      | undefined;
-      } = await fetchThumbnailWithCache(this.hass, this.cameraImage);
+
-      if (this._cameraImageSrc) {
+    if (!cameraState) {
-        URL.revokeObjectURL(this._cameraImageSrc);
-      }
-      this._cameraImageSrc = URL.createObjectURL(
-        b64toBlob(content, contentType)
-      );
-      this._onImageLoad();
-    } catch (err) {
       this._onImageError();
+      return;
     }
+
+    this._cameraImageSrc = await fetchThumbnailUrlWithCache(
+      this.hass,
+      this.cameraImage
+    );
   }
 
   static get styles(): CSSResult {