Trudeau has invoked the Emergencies Act. This gives him the power to invoke the military but it isn't a given. He has even said that he is not invoking it.
Emergencies Act does NOT equal Martial Law.
BTW, I suspect the only reason he has NOT invoked the military is because they probably won't listen to him.
parliament vote first, then senate approval. Liberals only have 30% of the house, Cons and NDP have already made statements they don't support it. It's going nowhere.