Examples with Nullable org.checkerframework.checker.nullness.qual.Nullable used on opensource projects

Example 51 with Nullable

use of org.checkerframework.checker.nullness.qual.Nullable in project ExoPlayer by google.

the class DemoUtil method getHttpDataSourceFactory.

public static synchronized HttpDataSource.Factory getHttpDataSourceFactory(Context context) {
    if (httpDataSourceFactory == null) {
        if (USE_CRONET_FOR_NETWORKING) {
            context = context.getApplicationContext();
            @Nullable CronetEngine cronetEngine = CronetUtil.buildCronetEngine(context);
            if (cronetEngine != null) {
                httpDataSourceFactory = new CronetDataSource.Factory(cronetEngine, Executors.newSingleThreadExecutor());
            }
        }
        if (httpDataSourceFactory == null) {
            // We don't want to use Cronet, or we failed to instantiate a CronetEngine.
            CookieManager cookieManager = new CookieManager();
            cookieManager.setCookiePolicy(CookiePolicy.ACCEPT_ORIGINAL_SERVER);
            CookieHandler.setDefault(cookieManager);
            httpDataSourceFactory = new DefaultHttpDataSource.Factory();
        }
    }
    return httpDataSourceFactory;
}

Example 52 with Nullable

use of org.checkerframework.checker.nullness.qual.Nullable in project aws-xray-sdk-java by aws.

the class ContainerInsightsUtil method getClusterName.

/**
 * Return the cluster name from ContainerInsights configMap via the K8S API and the pod's system account.
 *
 * @return the name
 */
@Nullable
public static String getClusterName() {
    if (isK8s()) {
        CloseableHttpClient client = getHttpClient();
        HttpGet getRequest = new HttpGet(K8S_URL + CI_CONFIGMAP_PATH);
        String k8sCredentialHeader = getK8sCredentialHeader();
        if (k8sCredentialHeader != null) {
            getRequest.setHeader(AUTH_HEADER_NAME, k8sCredentialHeader);
        }
        try {
            CloseableHttpResponse response = client.execute(getRequest);
            try {
                HttpEntity entity = response.getEntity();
                String json = EntityUtils.toString(entity);
                ObjectMapper mapper = new ObjectMapper();
                String clusterName = mapper.readTree(json).at("/data/cluster.name").asText();
                if (logger.isDebugEnabled()) {
                    logger.debug("Container Insights Cluster Name: " + clusterName);
                }
                return clusterName;
            } catch (IOException e) {
                logger.error("Error parsing response from Kubernetes", e);
            } finally {
                response.close();
            }
            client.close();
        } catch (IOException e) {
            logger.error("Error querying for Container Insights ConfigMap", e);
        }
    }
    return null;
}

Example 53 with Nullable

use of org.checkerframework.checker.nullness.qual.Nullable in project aws-xray-sdk-java by aws.

the class ContainerInsightsUtil method getK8sKeystore.

@Nullable
private static KeyStore getK8sKeystore() {
    InputStream certificateFile = null;
    try {
        KeyStore k8sTrustStore = null;
        File caFile = Paths.get(K8S_CRED_FOLDER, K8S_CRED_CERT_SUFFIX).toFile();
        if (caFile.exists()) {
            k8sTrustStore = KeyStore.getInstance(KeyStore.getDefaultType());
            k8sTrustStore.load(null, null);
            CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509");
            certificateFile = new FileInputStream(caFile);
            Collection<? extends Certificate> certificates = certificateFactory.generateCertificates(certificateFile);
            if (certificates.isEmpty()) {
                throw new IllegalArgumentException("K8s cert file contained no certificates.");
            }
            for (Certificate certificate : certificates) {
                k8sTrustStore.setCertificateEntry("k8sca", certificate);
            }
        } else {
            logger.debug("K8s CA Cert file does not exists.");
        }
        return k8sTrustStore;
    } catch (KeyStoreException | CertificateException | NoSuchAlgorithmException | IOException e) {
        logger.warn("Unable to load K8s CA certificate.", e);
        return null;
    } finally {
        if (certificateFile != null) {
            try {
                certificateFile.close();
            } catch (IOException e) {
                logger.error("Can't close K8s CA certificate file.", e);
            }
        }
    }
}

Example 54 with Nullable

use of org.checkerframework.checker.nullness.qual.Nullable in project aws-xray-sdk-java by aws.

the class ContainerInsightsUtil method getK8sCredentialHeader.

@Nullable
private static String getK8sCredentialHeader() {
    BufferedReader tokenReader = null;
    try {
        File tokenFile = Paths.get(K8S_CRED_FOLDER, K8S_CRED_TOKEN_SUFFIX).toFile();
        tokenReader = new BufferedReader(new InputStreamReader(new FileInputStream(tokenFile), StandardCharsets.UTF_8));
        return String.format("Bearer %s", tokenReader.readLine());
    } catch (IOException e) {
        logger.warn("Unable to read K8s credential file.", e);
    } finally {
        if (tokenReader != null) {
            try {
                tokenReader.close();
            } catch (IOException e) {
                logger.error("Can't close K8s credential file.", e);
            }
        }
    }
    return null;
}

Example 55 with Nullable

use of org.checkerframework.checker.nullness.qual.Nullable in project aws-xray-sdk-java by aws.

the class AWSXRayRecorder method currentTraceId.

/**
 * @throws SegmentNotFoundException
 *             if {@code contextMissingStrategy} throws exceptions and no segment or subsegment is currently in progress
 * @return the trace ID of the {@code Segment} currently in progress, or {@code null} if {@code contextMissingStrategy}
 * suppresses exceptions and no segment or subsegment is currently in progress
 */
@Nullable
public TraceID currentTraceId() {
    SegmentContext context = getSegmentContext();
    if (context == null) {
        return null;
    }
    Entity current = context.getTraceEntity();
    if (current != null) {
        return current.getParentSegment().getTraceId();
    } else {
        contextMissingStrategy.contextMissing("Failed to get current trace ID: segment cannot be found.", SegmentNotFoundException.class);
        return null;
    }
}