Smarts SAM: How to parse out an IP address in a varbind string in a trap using ASL

Products

• VMware

Environment

VMware Smart Assurance - SMARTS

Resolution

How to parse out an IP address in a varbind string in a Smarts SAM trap using ASL

There are many ways to parse a varbind string. The following sections of this Fix statement present two possible methods using ASL.

 

Example assumptions for each parsing method

The example in each method assumes that the IP address will always be within parentheses, and that the V1 string to be parsed is the following:

 "EMC-WHITEPLAINS-NY-N6531 (10.9.1.1)::Serial0/0"

Method 1 - Parsing based on parentheses 
Parse_IP.asl sample code for parsing based on parentheses is as follows:

START { .. eol }
do {
    V1 = "EMC-WHITEPLAINS-NY-N6531 (10.9.1.1)::Serial0/0";
    print("ip: ". PARSE_IP(V1));
}

 

//method 1
PARSE_IP(str) {
    input = str;
    { .. "(" }
    ip : { .. ")" }
    .. eol
    do {
     return substring(ip,0, sizeof(ip)-1);
     }
}

 

Method 2 - Using the ASL delim functionality
Parse_IP.asl sample code for parsing using the ASL delim functionality is as follows:

//method 2
/*PARSE_IP(str) {
    input = str;
    delim = "()";
    word ip : word
    .. eol
    do {
     return ip;
     }
}*/