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discovery: Automatically set .id based on .role #19

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Merged
jonnor merged 1 commit into from
May 29, 2017
Merged

discovery: Automatically set .id based on .role #19

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21 changes: 21 additions & 0 deletions src/msgflo.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -11,6 +11,22 @@ using namespace trygvis::mqtt_support;

namespace msgflo {

std::string random_string( size_t length )
{
auto randchar = []() -> char
{
const char charset[] =
"0123456789"
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"abcdefghijklmnopqrstuvwxyz";
const size_t max_index = (sizeof(charset) - 1);
return charset[ rand() % max_index ];
};
std::string str(length,0);
std::generate_n( str.begin(), length, randchar );
return str;
}

std::string string_to_upper_copy(const std::string &str) {
std::string ret;
ret.resize(str.size());
Expand Down Expand Up @@ -145,6 +161,11 @@ class AbstractEngine {

Definition validateDefinitionFromUser(const Definition &definition) {
Definition d(definition);

if (d.id.size() == 0) {
d.id = d.role + "-" + random_string(8);
}

for (auto &port : d.inports) {
if (port.queue.empty()) {
port.queue = generateQueueName(definition, port);
Expand Down