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The did-sov-SLfEi9esrjzybysFxQZbfq ruleset handles an incoming basicmessage with the rule shown below. The rule selects (line 12) on the same event, sovrin:basicmessage_message, but only when (line 13) the content of the message is a Map which has a key “@type” whose value matches the mturi pattern (as it line 4) (this is defined in the Tic Tax Tac Toe protocol).
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|---|---|---|
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ruleset did-sov-SLfEi9esrjzybysFxQZbfq {
...
global {
mturi = re#did:sov:SLfEi9esrjzybysFxQZbfq;spec/tictactoe/1.0/([A-Za-z0-9_.-]+)#
...
}
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//
// eavesdrop incoming agent basicmessages for one of interest
//
rule eavesdrop_basicmessage {
select when sovrin basicmessage_message
where event:attr("message"){["content","@type"]}.match(mturi)
pre {
content = event:attr("message"){"content"}
event_type = content{"@type"}.extract(mturi).head()
conn = event_type => agent:connections(){event:attr("sender_key")}
| null
}
if event_type && conn then noop()
fired {
ent:opponent := conn{"label"}
ent:their_vk := conn{"their_vk"}
ent:my_did := conn{"my_did"}
raise tictactoe event event_type attributes content
}
} |
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