Hi all,
for impulse 2 I've been working on migrating to milo 0.36 and
have 2 questions:
1) Security Mode
I have a security mode and security polivy
// security
public static final int SECURITY_NONE = 0;
public static final int SECURITY_SIGN = 1;
public static final int SECURITY_SIGN_ENCRYPT = 2;
public static final String[] SECURITY_OPTIONS = {
"None", "Sign", "Sign and Encrypt" };
public int securityMode = SECURITY_NONE;
public static final int POLICY_Basic128Rsa15 = 0;
public static final int POLICY_Basic256 = 1;
public static final int POLICY_Basic256Sha256 = 2;
public static final int POLICY_NONE = 3;
public static final String[] POLICY_OPTIONS = {
"Basic128Rsa15", "Basic256", "Basic256Sha256", "None" };
public int securityPolicy = POLICY_Basic128Rsa15;
In the previous release I compared both for getting the endpoint.
In the latest examples, just the policy is used:
// Endpoint
List<EndpointDescription> endpoints = null;
try {
endpoints =
DiscoveryClient.getEndpoints(adapter.server).get();
} catch (Throwable ex) {
// try the explicit discovery endpoint as well
String discoveryUrl = adapter.server;
if (!discoveryUrl.endsWith("/")) {
discoveryUrl += "/";
}
discoveryUrl += "discovery";
logger.info("Trying explicit discovery URL:
{}", discoveryUrl);
endpoints =
DiscoveryClient.getEndpoints(discoveryUrl).get();
}
// determine end point
EndpointDescription endpoint = null;
if (endpoint == null)
endpoint = endpoints.stream().filter(e ->
e.getSecurityPolicyUri().equals(securityPolicy.getUri())).findFirst()
.orElseThrow(() -> new Exception("No
desired endpoints returned"));
How do i apply the security mode ? Is it done by passing
public/private keys or not ?
OpcUaClientConfig config =
OpcUaClientConfig.builder().setApplicationName(LocalizedText.english(adapter.applicationName))
.setApplicationUri(adapter.applicationUri).setProductUri(adapter.productUri).setCertificate(certificate).setKeyPair(clientKeyPair)
2) EncoderDelegate / DelegateRegistry for converting data
values to String
In previous version I used the EncoderDelegate / DelegateRegistry
to transform a UaSerializable to String. I dont find this anymore.
How is it done now ?
static public String valToString(Object value, int
maxSize) {
if (value != null &&
value.getClass().isArray()) {
String combined = "";
for (int n = 0; n < Array.getLength(value);
n++) {
combined += (combined.isEmpty() ? "" : ";
");
String val = valToString(Array.get(value,
n));
if (val != null) {
combined += val;
}
}
return combined;
} else if (value instanceof DateTime)
value = ((DateTime)
value).getJavaDate().toString();
else if (value instanceof ByteString)
value = ((ByteString) value).toString();
else if (value instanceof LocalizedText)
value = ((LocalizedText) value).getText();
else if (value instanceof QualifiedName)
value = ((QualifiedName)
value).toParseableString();
else if (value instanceof NodeId)
value = ((NodeId) value).toParseableString();
else if (value instanceof ExpandedNodeId)
value = ((ExpandedNodeId)
value).toParseableString();
else if (value instanceof UUID)
value = ((UUID) value).toString();
else if (value instanceof XmlElement)
value = ((XmlElement) value).getFragment();
else if (value instanceof StatusCode)
value = ((StatusCode) value).isGood() ? "Good"
: ((StatusCode) value).isBad() ? "Bad" : "Uncertain";
else if (value instanceof Boolean)
value = ((Boolean) value).toString();
else if (value instanceof UaSerializable) {
final StringBuilder writer = new
StringBuilder();
writer.append('{');
EncoderDelegate<Object>
delegate = DelegateRegistry.getInstance().getEncoder(value);
delegate.encode(value, new
UaEncoder() {
private void append(String field,
String valueOf) {
if (writer.length() > 1)
writer.append(';');
writer.append(field);
writer.append('=');
writer.append(valueOf);
}
@Override
public void encodeBoolean(String
field, Boolean value) throws UaSerializationException {
append(field, valToString(value));
}
@Override
public void encodeSByte(String field,
Byte value) throws UaSerializationException {
append(field, valToString(value));
}
...
thanks,
thomas
