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You should have already completed the following lessons:
(Classic) Quickstart lesson. (Be able to register and install rulesets)
Events & Queries lesson. (Be able to create channels and understand how events are raised on channels)
Pico-Based Systems lesson. (Be able to manage the pico lifecycle using Devtools and programmatically)
- Read Wrangler Subscriptions description.
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| Code Block | ||||
|---|---|---|---|---|
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rule introduce_myself {
select when pico_systems introduction_requested
pre {
sub_attrs = {
"name": event:attr("name"),
"name_space": "Closet",
"my_role": event:attr("my_role"),
"subscriber_role": event:attr("subscriber_role"),
"subscriber_eci": event:attr("subscriber_eci")
};
}
if ( not sub_attrs{"name"}.isnull()
&& not sub_attrs{"subscriber_eci"}.isnull()
) then
send_directive("subscription_introduction_sent")
with options = sub_attrs
fired {
raise wrangler event '"subscription'" attributes sub_attrs;
log "subcription introduction made"
} else {
log "missing required attributes " + sub_attr.encode()
}
} |
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| Code Block | ||||
|---|---|---|---|---|
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rule approve_subscription {
select when pico_systems subscription_approval_requested
pre {
pending_sub_name = event:attr("sub_name");
}
if ( not pending_sub_name.isnull()
) then
send_directive("subscription_approved")
with options = {"pending_sub_name" : pending_sub_name
}
fired {
raise wrangler event '"pending_subscription_approval'"
with channel_name = pending_sub_name;
log "Approving subscription " + pending_sub_name;
} else {
log "No subscription name provided"
}
} |
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| Code Block | ||||
|---|---|---|---|---|
| ||||
rule remove_subscription {
select when pico_systems subscription_deletion_requested
pre {
pending_sub_name = event:attr("sub_name");
}
if ( not pending_sub_name.isnull()
) then
send_directive("subscription_approved")
with options = {"pending_sub_name" : pending_sub_name }
fired {
raise wrangler event '"subscription_cancellation'"
with channel_name = pending_sub_name;
log "Approving subscription " + pending_sub_name;
} else {
log "No subscription name provided"
}
} |
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