Added hosts_file_example

examples/hosts_file/README.md

@@ -0,0 +1,23 @@
+Very simple solar example two nodes + hosts file mapping
+
+Run:
+
+`python examples/hosts_file/hosts.py`
+
+Then you can continue with standard solar things:
+
+```
+solar changes stage -d
+solar changes process
+solar changes run-once last
+watch -n 1 solar changes report last
+```
+
+Wait until all actions have state `SUCCESS`,
+after that check `/etc/hosts` files on both nodes, it will contain entries like:
+
+```
+10.0.0.3 first1441705177.99
+10.0.0.4 second1441705178.0
+```
+

examples/hosts_file/hosts.py

@@ -0,0 +1,57 @@
+import click
+import sys
+import time
+
+from solar.core import signals
+from solar.core.resource import virtual_resource as vr
+
+from solar.interfaces.db import get_db
+
+
+db = get_db()
+
+
+def run():
+    db.clear()
+    signals.Connections.clear()
+
+    node1 = vr.create('node1', 'resources/ro_node', {'name': 'first' + str(time.time()),
+                                                   'ip': '10.0.0.3',
+                                                   'ssh_key': '/vagrant/.vagrant/machines/solar-dev1/virtualbox/private_key',
+                                                   'ssh_user': 'vagrant'})[0]
+
+    node2 = vr.create('node2', 'resources/ro_node', {'name': 'second' + str(time.time()),
+                                                   'ip': '10.0.0.4',
+                                                   'ssh_key': '/vagrant/.vagrant/machines/solar-dev2/virtualbox/private_key',
+                                                   'ssh_user': 'vagrant'})[0]
+
+
+
+    hosts1 = vr.create('hosts_file1', 'resources/hosts_file', {})[0]
+    hosts2 = vr.create('hosts_file2', 'resources/hosts_file', {})[0]
+    signals.connect(node1, hosts1, {
+        'name': 'hosts_names',
+        'ip': ['hosts_ips', 'ip'],
+        'ssh_user': 'ssh_user',
+        'ssh_key': 'ssh_key'
+    })
+
+    signals.connect(node2, hosts2, {
+        'name': 'hosts_names',
+        'ip': ['hosts_ips', 'ip'],
+        'ssh_user': 'ssh_user',
+        'ssh_key': 'ssh_key'
+    })
+
+    signals.connect(node1, hosts2, {
+        'ip': 'hosts_ips',
+        'name': 'hosts_names'
+    })
+
+    signals.connect(node2, hosts1, {
+        'ip': 'hosts_ips',
+        'name': 'hosts_names'
+    })
+
+
+run()

resources/ro_node/meta.yaml

@@ -6,6 +6,9 @@ input:
     ip:
       schema: str!
       value:
+    name:
+      schema: str
+      value:
     ssh_key:
       schema: str!
       value: