restore

restore
-------

Manually restore archived nodes.
Restore will fail if:
  - Node has not been archived
  - Node has children, (since archived nodes have no children)
  - If the file ECF_HOME/<host>.<port>.<ECF_NAME>.check does not exist
Nodes can be restored manually(as in this command) but also automatically

Automatic restore is done using the 'autorestore' attribute.
Once the node containing the 'autorestore' completes, the attribute is applied

 suite s
   family farchive_now
     autoarchive 0      # archive immediately after complete
     task tx
   endfamily
   family frestore_from_task
     task t1
        trigger ../farchive_now<flag>archived
        autorestore ../farchive_now  # call autorestore when t1 completes
   endfamily
 endsuite

In this example task '/s/frestore_from_task/t1' is only triggered if 'farchive_now'
is archived, then when t1 completes it will restore family 'farchive_now'
Usage::
   --restore=/s1/f1   # restore family /s1/f1
   --restore=/s1 /s2  # restore suites /s1 and /s2

The client reads in the following environment variables. These are read by user and child command

|----------|----------|------------|-------------------------------------------------------------------|
| Name     |  Type    | Required   | Description                                                       |
|----------|----------|------------|-------------------------------------------------------------------|
| ECF_HOST | <string> | Mandatory* | The host name of the main server. defaults to 'localhost'         |
| ECF_PORT |  <int>   | Mandatory* | The TCP/IP port to call on the server. Must be unique to a server |
| ECF_SSL  |  <any>   | Optional*  | Enable encrypted comms with SSL enabled server.                   |
|----------|----------|------------|-------------------------------------------------------------------|

* The host and port must be specified in order for the client to communicate with the server, this can
  be done by setting ECF_HOST, ECF_PORT or by specifying --host=<host> --port=<int> on the command line