The host needs to scan for items which need published (xCMDs). This itterator may later be expanded to include metrics, properties and so forth.
xCMD crawler:
1. loop all Groups
2. loop all Edges
3. loop all Devices
//Will Cycle through the Groups.Edges.devices. 1st it will find the first edge of the first group. Then it will either go deeper (G1/E1/D1) or down if there are no devices (either G1/E2, or G2/E1)
// Bool: OnlyOnline := TRUE will skip offline things
// Bool: EndOfList := TRUE indicates the end of list has been reached
FB_DeeperAndDown()
Continuously call FB_DeeperAndDown() until EOL or you find a DeviceOrEdge which wants to publish => then publish it.
FB_DeeperAndDown( Groups := _Groups , OnlyOnline := TRUE ,
itfXcmdSender => itfXcmdSender , EndOfList => EOL );
IF (NOT EOL) AND itfXcmdSender <> 0 THEN
IF itfXcmdSender.getXcmd(itfPayload => xcmdPayload ) THEN
Publish(xcmdPayload);
Published := TRUE;
THEN
END_IF;
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