管理AEM主机

# Environment variable used to specify the AEM service the React app will connect to when running under this profile
REACT_APP_AEM_HOST=https://publish-p123-e456.adobeaemcloud.com
...

...
"scripts": {
  "build:development": "REACT_APP_ENV=development npm run build",
  "build:stage": "REACT_APP_ENV=stage npm run build",
  "build:production": "REACT_APP_ENV=production npm run build"
},
...

const { AEMHeadless } = require('@adobe/aem-headless-client-js');
...
// Get the environment variables for configuring the headless client,
// specifically the `REACT_APP_AEM_HOST` which contains the AEM service host.
const {
    REACT_APP_AEM_HOST,         // https://publish-p123-e456.adobeaemcloud.com
    REACT_APP_GRAPHQL_ENDPOINT,
} = process.env;
...

// Initialize the AEM Headless client with the AEM Service host, which dictates the AEM service provides the GraphQL data.
export const aemHeadlessClient = new AEMHeadless({
    serviceURL: REACT_APP_AEM_HOST,
    endpoint: REACT_APP_GRAPHQL_ENDPOINT
});

import { aemHeadlessClient , mapErrors} from "./headlessClient";
...
// The exported useEffect hook
export const getAdventureByPath = async function(adventurePath) {
    const queryVariables = {'adventurePath': adventurePath};
    return executePersistedQuery('wknd-shared/adventures-by-path', queryVariables);
}
...
// Private function that invokes the aemHeadlessClient
const executePersistedQuery = async function(persistedQueryPath, queryVariables) {
    let data;
    let errors;

    try {
        // Run the persisted query using using the aemHeadlessClient that's initialized with the AEM host
        const response = await aemHeadlessClient.runPersistedQuery(persistedQueryPath, queryVariables);
        // The GraphQL data is stored on the response's data field
        data = response.data;
        errors = response.errors ? mapErrors(response.errors) : undefined;
    } catch (e) {
        console.error(e.toJSON());
        errors = e;
    }

    return {data, errors};
}

import { useAdventureByPath } from './api/persistedQueries';
...
// Query AEM GraphQL APIs via the useEffect hook that invokes the AEM Headless client initialized with the AEM host
let { data, error } = useAdventureByPath('/content/dam/wknd-shared/en/adventures/bali-surf-camp/adobestock-175749320.jpg')

...

// The http/https protocol scheme used to access the AEM_HOST
AEM_SCHEME = https

// Target hostname for AEM service, do not include the scheme: http:// or https://
AEM_HOST = publish-p123-e789.adobeaemcloud.com
...

...
let aemScheme: String = try Configuration.value(for: "AEM_SCHEME")  // https
let aemHost: String = try Configuration.value(for: "AEM_HOST")      // publish-p123-e456.adobeaemcloud.com

let aemHeadlessClient = Aem(scheme: aemScheme, host: aemHost);

/// #makeRequest(..)
/// Generic method for constructing and executing AEM GraphQL persisted queries
private func makeRequest(persistedQueryName: String, params: [String: String] = [:]) -> URLRequest {
    // Encode optional parameters as required by AEM
    let persistedQueryParams = params.map { (param) -> String in
        encode(string: ";\(param.key)=\(param.value)")
    }.joined(separator: "")

    // Construct the AEM GraphQL persisted query URL, including optional query params
    let url: String = "\(self.scheme)://\(self.host)/graphql/execute.json/" + persistedQueryName + persistedQueryParams;

    var request = URLRequest(url: URL(string: url)!);

    return request;
}

android {
    ...
    flavorDimensions 'env'
    productFlavors {
        dev {
            dimension 'env'
            applicationIdSuffix '.dev'
            buildConfigField "String", "AEM_HOST", '"http://10.0.2.2:4503"'
            ...
        }
        prod {
            dimension 'env'
            buildConfigField "String", "AEM_HOST", '"https://publish-p123-e789.adobeaemcloud.com"'
            ...
        }
    }
    ...
}

public class AdventuresLoader extends AsyncTaskLoader<AdventureList> {
    ...

    @Override
    public AdventureList loadInBackground() {
        ...
        // Initialize the AEM Headless client using the AEM Host exposed via BuildConfig.AEM_HOST
        AEMHeadlessClientBuilder builder = AEMHeadlessClient.builder().endpoint(BuildConfig.AEM_HOST);
        AEMHeadlessClient client = builder.build();
        // With the AEM headless client initialized, make GraphQL persisted query calls to AEM
        ...
    }
    ...
}

# Environment variable used to specify the AEM service the React app will connect to when running under this profile
REACT_APP_AEM_HOST=https://publish-p123-e456.adobeaemcloud.com
...

...
"scripts": {
  "build:development": "REACT_APP_ENV=development npm run build",
  "build:stage": "REACT_APP_ENV=stage npm run build",
  "build:production": "REACT_APP_ENV=production npm run build"
},
...

...
// Import the AEM origin from the app's environment configuration
const AEM_HOST = env.process.REACT_APP_AEM_HOST; // https://publish-p123-e456.adobeaemcloud.com

let { data, error } = useAdventureByPath('/content/dam/wknd-shared/en/adventures/bali-surf-camp/bali-surf-camp')

return (
    // Prefix the image src URL with the AEM host
    <img src={AEM_HOST + data.adventureByPath.item.primaryImage._dynamicUrl }>
    {/* Resulting in: <img src="https://publish-p123-e456.adobeaemcloud.com/adobe/dynamicmedia/deliver/dm-aid--de43411-88ec-4c4d-b5ef-e3dc4bc0cb42/adobestock-175749320.jpg"/>  */}
)

// The http/https protocol scheme used to access the AEM_HOST
AEM_SCHEME = https

// Target hostname for AEM service, do not include the scheme: http:// or https://
AEM_HOST = publish-p123-e789.adobeaemcloud.com
...

class Aem: ObservableObject {
    let scheme: String
    let host: String
    ...
    init(scheme: String, host: String) {
        self.scheme = scheme
        self.host = host
    }
    ...
    /// Prefixes AEM image dynamicUrl with the AEM scheme/host
    func imageUrl(dynamicUrl: String) -> URL {
        return URL(string: "\(self.scheme)://\(self.host)\(dynamicUrl)")!
    }
    ...
}

import SDWebImageSwiftUI
...
struct AdventureListItemView: View {
    @EnvironmentObject private var aem: Aem

    var adventure: Adventure

    var body: some View {
        HStack {
            // Path the image dynamicUrl to `aem.imageUrl(..)` to prepend the AEM service host
            AdventureRowImage(imageUrl: aem.imageUrl(dynamicUrl: adventure.image()))
            Text(adventure.title)
            Spacer()
        }
    }
}
...

android {
    ...
    flavorDimensions 'env'
    productFlavors {
        dev {
            dimension 'env'
            applicationIdSuffix '.dev'
            buildConfigField "String", "AEM_HOST", '"http://10.0.2.2:4503"'
            ...
        }
        prod {
            dimension 'env'
            buildConfigField "String", "AEM_HOST", '"https://publish-p123-e789.adobeaemcloud.com"'
            ...
        }
    }
    ...
}

...
public class RemoteImagesCache implements Html.ImageGetter {
    ...
    private final Map<String, Drawable> drawablesByPath = new HashMap<>();
    ...
    public void prepareDrawableFor(String path) {
        ...

        // Prefix the image path with the build config AEM_HOST variable
        String urlStr = BuildConfig.AEM_HOST + path;

        URL url = new URL(urlStr);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        // Get the image data from AEM
        Drawable drawable = Drawable.createFromStream(is, new File(path).getName());
        ...
        // Save the image data into the cache using the path as the key
        drawablesByPath.put(path, drawable);
        ...
    }

    @Override
    public Drawable getDrawable(String dynamicUrl) {
        // Get the image data from the cache using the dynamicUrl as the key
        return drawablesByPath.get(dynamicUrl);
    }
}

...
public class AdventureDetailFragment extends Fragment implements LoaderManager.LoaderCallbacks<Adventure> {
    ...
    private ImageView adventureDetailImage;
    ...

    private void updateContent() {
        ...
        adventureDetailImage.setImageDrawable(RemoteImagesCache.getInstance().getDrawable(adventure.getPrimaryImageDynamicUrl()));
        ...
    }
...
}