Initial interface files

This is a basic, 'just about works' commit of the HSM plugin interface to
provide a base to work from in getting the HSM <-> barbican charm to work.

copyright

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+Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0
+
+Files: *
+Copyright: 2015, Canonical Ltd.
+License: Apache-2.0
+
+License: Apache-2.0
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+ .
+    http://www.apache.org/licenses/LICENSE-2.0
+ .
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ .
+ On Debian-based systems the full text of the Apache version 2.0 license
+ can be found in `/usr/share/common-licenses/Apache-2.0'.

interface.yaml

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+name: barbican-hsm-plugin
+summary: Interface for a plugin to the Barbican charm.
+maintainer: OpenStack Charmers <openstack-charmers@lists.ubuntu.com>
+repo: https://github.com/openstack-charmers/charm-interface-barbican-plugin

provides.py

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+import charms.reactive as reactive
+import charmhelpers.core.hookenv as hookenv
+
+
+class BarbicanProvides(reactive.RelationBase):
+    scope = reactive.scopes.GLOBAL
+
+    # These remote data fields will be automatically mapped to accessors
+    # with a basic documentation string provided.
+    auto_accessors = ['test']
+
+    @reactive.hook('{provides:barbican-hsm-plugin}-relation-joined')
+    def joined(self):
+        self.set_state('{relation_name}.connected')
+        hookenv.log("BarbicanProvides.joined() ran")
+
+    @reactive.hook('{provides:barbican-hsm-plugin}-relation-changed')
+    def changed(self):
+        hookenv.log("BarbicanProvides.changed() ran")
+
+    @reactive.hook('{provides:barbican-hsm-plugin}-relation-{broken,departed}')
+    def departed(self):
+        hookenv.log("BarbicanProvides.departed() ran")
+        self.remove_state('{relation_name}.connected')
+        self.remove_state('{relation_name}.available')
+
+    def set_name(self, name):
+        self.set_remote(name=name)

requires.py

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+import charms.reactive as reactive
+import charmhelpers.core.hookenv as hookenv
+
+
+class BarbicanRequires(reactive.RelationBase):
+    scope = reactive.scopes.GLOBAL
+
+    # These remote data fields will be automatically mapped to accessors
+    # with a basic documentation string provided.
+    auto_accessors = ['name']
+
+    @reactive.hook('{requires:barbican-hsm-plugin}-relation-joined')
+    def joined(self):
+        self.set_state('{relation_name}.connected')
+        hookenv.log("BarbicanRequires.joined() ran")
+        self.update_status()
+
+    @reactive.hook('{requires:barbican-hsm-plugin}-relation-changed')
+    def changed(self):
+        hookenv.log("BarbicanRequires.changed() ran")
+        self.update_status()
+
+    @reactive.hook('{requires:barbican-hsm-plugin}-relation-{broken,departed}')
+    def departed(self):
+        hookenv.log("BarbicanRequires.departed() ran")
+        self.remove_state('{relation_name}.connected')
+        self.remove_state('{relation_name}.available')
+
+    def update_status(self):
+        if self.name is not None:
+            self.set_state('{relation_name}.available')

test-requirements.txt

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+flake8>=2.2.4,<=2.4.1
+os-testr>=0.4.1
+charm-tools

tox.ini

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+[tox]
+envlist = lint,py34,py35
+skipsdist = True
+skip_missing_interpreters = True
+
+[testenv]
+setenv = VIRTUAL_ENV={envdir}
+         PYTHONHASHSEED=0
+install_command =
+  pip install --allow-unverified python-apt {opts} {packages}
+commands = ostestr {posargs}
+
+[testenv:py34]
+basepython = python3.4
+deps = -r{toxinidir}/test-requirements.txt
+
+[testenv:py35]
+basepython = python3.5
+deps = -r{toxinidir}/test-requirements.txt
+
+[testenv:pep8]
+basepython = python2.7
+deps = -r{toxinidir}/test-requirements.txt
+commands = flake8 {posargs}
+
+[testenv:venv]
+commands = {posargs}
+
+[flake8]
+ignore = E402,E226