Class: OPCUA::Client::cVarNode
Instance Method Summary collapse
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#on_change ⇒ Object
{{{.
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#on_value_change ⇒ Object
{{{.
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#value ⇒ Object
{{{.
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#value=(value) ⇒ Object
{{{.
Methods inherited from cNode
Instance Method Details
#on_change ⇒ Object
{{{
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# File 'ext/opcua/client/client.c', line 90
static VALUE node_on_change(VALUE self) { //{{{
node_struct *ns;
Data_Get_Struct(self, node_struct, ns);
if (!ns->master->started) rb_raise(rb_eRuntimeError, "Client disconnected.");
if (!rb_block_given_p())
rb_raise(rb_eArgError, "you need to supply a block with #on_change");
ns->on_change = rb_block_proc();
rb_gc_register_address(&ns->on_change);
rb_ary_push(ns->master->subs,self);
ns->master->subs_changed = true;
return self;
}
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#on_value_change ⇒ Object
{{{
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# File 'ext/opcua/client/client.c', line 132
static VALUE node_on_value_change(VALUE self) { // {{{
node_struct *ns;
Data_Get_Struct(self, node_struct, ns);
if (!ns->master->started) rb_raise(rb_eRuntimeError, "Client disconnected.");
if (!rb_block_given_p())
rb_raise(rb_eArgError, "you need to supply a block with #on_change");
UA_CreateSubscriptionRequest sreq; UA_CreateSubscriptionRequest_init(&sreq);
sreq.requestedPublishingInterval = 100;
sreq.requestedLifetimeCount = 10000;
sreq.requestedMaxKeepAliveCount = 10;
sreq.maxNotificationsPerPublish = 0;
sreq.publishingEnabled = true;
sreq.priority = 0;
UA_CreateSubscriptionResponse sres = UA_Client_Subscriptions_create(ns->master->master, sreq, NULL, NULL, NULL);
if (sres.responseHeader.serviceResult != UA_STATUSCODE_GOOD)
rb_raise(rb_eRuntimeError, "Subscription could not be created.");
VALUE ins = rb_ary_new2(2);
rb_ary_store(ins,0,self);
rb_ary_store(ins,1,rb_block_proc());
ns->waiting = 0;
UA_MonitoredItemCreateRequest monRequest = UA_MonitoredItemCreateRequest_default(ns->id);
UA_MonitoredItemCreateResult monResponse =
UA_Client_MonitoredItems_createDataChange(ns->master->master, sres.subscriptionId,
UA_TIMESTAMPSTORETURN_BOTH,
monRequest, (void *)ins, node_on_value_change_handler, NULL);
if(monResponse.statusCode != UA_STATUSCODE_GOOD) {
rb_raise(rb_eRuntimeError, "Monitoring item failed: %s\n", UA_StatusCode_name(monResponse.statusCode));
}
keepRunning = true;
signal(SIGINT, intHandler);
while (ns->waiting < 2 && keepRunning) {
UA_Client_run_iterate(ns->master->master, 100);
}
signal(SIGINT, SIG_DFL); // reset the disposition for SIGINT to the default
UA_MonitoredItemCreateResult_clear(&monResponse);
UA_MonitoredItemCreateRequest_clear(&monRequest);
UA_Client_Subscriptions_deleteSingle(ns->master->master, sres.subscriptionId);
UA_CreateSubscriptionResponse_clear(&sres);
UA_CreateSubscriptionRequest_clear(&sreq);
return self;
}
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#value ⇒ Object
{{{
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# File 'ext/opcua/client/client.c', line 44
static VALUE node_value(VALUE self) { //{{{
node_struct *ns;
Data_Get_Struct(self, node_struct, ns);
if (!ns->master->started) rb_raise(rb_eRuntimeError, "Client disconnected.");
UA_Variant value;
UA_Variant_init(&value);
UA_StatusCode retval = UA_Client_readValueAttribute(ns->master->master, ns->id, &value);
VALUE ret = Qnil;
if (retval == UA_STATUSCODE_GOOD) {
ret = extract_value(value);
}
UA_Variant_clear(&value);
return rb_ary_entry(ret,0);
}
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#value=(value) ⇒ Object
{{{
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# File 'ext/opcua/client/client.c', line 61
static VALUE node_value_set(VALUE self, VALUE value) { //{{{
node_struct *ns;
Data_Get_Struct(self, node_struct, ns);
if (!ns->master->started) rb_raise(rb_eRuntimeError, "Client disconnected.");
UA_Variant variant;
UA_NodeId pdt;
UA_Client_readDataTypeAttribute(ns->master->master, ns->id, &pdt);
UA_UInt32 proposal = -1;
if (pdt.namespaceIndex == 0) {
proposal = pdt.identifier.numeric - 1; // what a dirty hack TODO, translate node to value
}
if (value_to_variant(value,&variant,proposal)) {
// printf("-----------------------------------------%ld\n",variant.arrayDimensionsSize);
if (variant.arrayDimensionsSize > 0) {
UA_Int32 ads = (UA_Int32) variant.arrayDimensionsSize;
UA_Client_writeValueRankAttribute(ns->master->master, ns->id, &ads);
UA_Client_writeArrayDimensionsAttribute(ns->master->master, ns->id, variant.arrayDimensionsSize, variant.arrayDimensions);
}
UA_StatusCode retval = UA_Client_writeValueAttribute(ns->master->master, ns->id, &variant);
if (retval != UA_STATUSCODE_GOOD) {
rb_raise(rb_eRuntimeError, "Can't set value: %s.", UA_StatusCode_name(retval));
}
}
return self;
}
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