61 lines
1.9 KiB
Go
61 lines
1.9 KiB
Go
package ICCC
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import (
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"github.com/SommerEngineering/Ocean/ICCC/Scheme"
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"github.com/SommerEngineering/Ocean/ICCC/SystemMessages"
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"github.com/SommerEngineering/Ocean/Log"
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LM "github.com/SommerEngineering/Ocean/Log/Meta"
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)
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// The receiver function for the ICCC message, that yields the hosts.
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func ICCCGetHostsReceiver(data map[string][]string) (result map[string][]string) {
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// Recover from errors:
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defer func() {
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if err := recover(); err != nil {
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Log.LogFull(senderName, LM.CategorySYSTEM, LM.LevelERROR, LM.SeverityUnknown, LM.ImpactUnknown, LM.MessageNamePARSE, "Was not able to execute the ICCC get hosts message.")
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result = make(map[string][]string, 0)
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return
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}
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}()
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// Converts the HTTP form data into an object:
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_, _, obj := Data2Message(SystemMessages.ICCCGetHosts{}, data)
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// Was it possible to convert the data?
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if obj != nil {
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// We have to read from the cache:
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cacheHostDatabaseLock.RLock()
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// How many hosts we currently known?
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countHosts := cacheHostDatabase.Len()
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// Prepare the answer object:
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answerMessage := SystemMessages.ICCCGetHostsAnswer{}
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answerMessage.Hostnames = make([]string, countHosts, countHosts)
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answerMessage.IPAddressesPorts = make([]string, countHosts, countHosts)
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// Loop over all hosts which are currently available at the cache:
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n := 0
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for entry := cacheHostDatabase.Front(); entry != nil; entry = entry.Next() {
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host := entry.Value.(Scheme.Host)
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answerMessage.Hostnames[n] = host.Hostname
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answerMessage.IPAddressesPorts[n] = host.IPAddressPort
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n++
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}
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// Unlock the cache:
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cacheHostDatabaseLock.RUnlock()
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// Send the answer:
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return Message2Data(``, ``, answerMessage)
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} else {
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Log.LogShort(senderName, LM.CategorySYSTEM, LM.LevelINFO, LM.MessageNameSTARTUP, `ICCC message: Was not able to create the message.`)
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}
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// In any other error case:
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result = make(map[string][]string, 0)
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return
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}
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