fun fromXContent()

in src/main/kotlin/org/opensearch/replication/metadata/state/ReplicationStateMetadata.kt [55:85]
30 lines of code
8 McCabe index (conditional complexity)

        fun fromXContent(parser: XContentParser): ReplicationStateMetadata {
            var builder = Builder()
            if (parser.currentToken() == null) {
                parser.nextToken()
            }
            var token = parser.currentToken()
            require(token == XContentParser.Token.START_OBJECT) { "expected start object but got a $token"}

            var currentField: String? = null
            while (parser.nextToken().also { token = it } !== XContentParser.Token.END_OBJECT) {
                if(token == XContentParser.Token.FIELD_NAME) {
                    currentField = parser.currentName()
                } else if (REPLICATION_DETAILS_KEY == currentField) {
                    val onGoingReplicationDetails = HashMap<String, ReplicationStateParams>()
                    while(parser.nextToken().also { token = it } != XContentParser.Token.END_OBJECT) {
                        if (token == XContentParser.Token.FIELD_NAME) {
                            currentField = parser.currentName()
                        }
                        else if(token == XContentParser.Token.START_OBJECT) {
                            var replicationDetails = parser.mapStrings()
                            onGoingReplicationDetails[currentField!!] = replicationDetails
                        } else {
                            throw IllegalArgumentException("Unexpected token during parsing " +
                                    "replication_metadata[$REPLICATION_DETAILS_KEY] - $token")
                        }
                    }
                    builder.replicationDetails(onGoingReplicationDetails)
                }
            }
            return builder.build()
        }