Examples with PskPublicInformation org.eclipse.californium.scandium.dtls.PskPublicInformation used on opensource projects

Example 1 with PskPublicInformation

use of org.eclipse.californium.scandium.dtls.PskPublicInformation in project hono by eclipse.

the class DeviceRegistryBasedPskStore method loadCredentialsForDevice.

/**
 * Load credentials for an identity used by a device in a PSK based DTLS handshake.
 *
 * @param cid the connection id to report the result.
 * @param identity the psk identity of the device.
 */
private void loadCredentialsForDevice(final ConnectionId cid, final PskPublicInformation identity) {
    final String publicInfo = identity.getPublicInfoAsString();
    LOG.debug("getting PSK secret for identity [{}]", publicInfo);
    final Span span = tracer.buildSpan("look up pre-shared key").withTag(Tags.SPAN_KIND.getKey(), Tags.SPAN_KIND_CLIENT).withTag(Tags.COMPONENT.getKey(), adapter.getTypeName()).start();
    final PreSharedKeyDeviceIdentity handshakeIdentity = getHandshakeIdentity(publicInfo, span);
    if (handshakeIdentity == null) {
        TracingHelper.logError(span, "could not determine auth-id from PSK identity");
        span.finish();
        return;
    }
    TracingHelper.TAG_TENANT_ID.set(span, handshakeIdentity.getTenantId());
    TracingHelper.TAG_AUTH_ID.set(span, handshakeIdentity.getAuthId());
    applyTraceSamplingPriority(handshakeIdentity, span).compose(v -> adapter.getCredentialsClient().get(handshakeIdentity.getTenantId(), handshakeIdentity.getType(), handshakeIdentity.getAuthId(), new JsonObject(), span.context())).map(credentials -> {
        final String deviceId = credentials.getDeviceId();
        TracingHelper.TAG_DEVICE_ID.set(span, deviceId);
        final SecretKey key = getCandidateKey(credentials);
        if (key == null) {
            TracingHelper.logError(span, "PSK credentials for device do not contain proper key");
            return new PskSecretResult(cid, identity, null, null);
        } else {
            span.log("successfully retrieved PSK for device");
            // set AdditionalInfo as customArgument here
            final AdditionalInfo info = DeviceInfoSupplier.createDeviceInfo(new Device(handshakeIdentity.getTenantId(), credentials.getDeviceId()), handshakeIdentity.getAuthId());
            return new PskSecretResult(cid, identity, key, info);
        }
    }).otherwise(t -> {
        TracingHelper.logError(span, "could not retrieve PSK credentials for device", t);
        LOG.debug("error retrieving credentials for PSK identity [{}]", publicInfo, t);
        return new PskSecretResult(cid, identity, null, null);
    }).onSuccess(result -> {
        span.finish();
        californiumResultHandler.apply(result);
    });
}