Better error handling in pseudowire implementation.

I refactored the pw handler to return meaningful very specific
errors for failures. As a result, I modified also the cli and rest
api implementations to use these fine grain errors accordingly.

Change-Id: I2429532f747c4560378c40be325b039ca0f5c925
9 files changed
tree: fea165f64618c02cf7f3d12cf181add225604d50
  1. BUCK
  2. app/
  3. pom.xml
  4. web/