mmpolicy

Construct, write and run IBM Storage Scale file system policies.

Examples

Write Policy

use mmpolicy::prelude::*;

let mut policy = Policy::new("size");

policy.rules.push(Rule::from(RuleType::ExternalList(
    Name("size".into()),
    Exec(String::new()),
)));

policy.rules.push(
    Rule(
        Some(Name("size".into())),
        RuleType::List(
            Name("size".into()),
            DirectoriesPlus(true),
            vec![Show::KbAllocated],
            None,
        )
    )
);

let mut result: Vec<u8> = Vec::new();
policy.write(&mut result).unwrap();
let result = std::str::from_utf8(&result).unwrap();

let expected = indoc::indoc! {"
    RULE
      EXTERNAL LIST 'size'
      EXEC ''

    RULE 'size'
      LIST 'size'
      DIRECTORIES_PLUS
      SHOW(VARCHAR(KB_ALLOCATED))
"};

assert_eq!(expected, result);

// write to file
// let mut file = std::fs::File::create("policy.txt").unwrap();
// policy.write(&mut file).unwrap();

Run Policy

use mmpolicy::prelude::*;

let mut policy = Policy::new("size");
// add rules like above

// options for an EXTERNAL LIST policy
let mut options = RunOptions::default();
options.action = Some("defer".into());
options.choice_algorithm = Some("fast".into());
options.information_level = Some("0".into());

let reports = policy.run(
    "/data/test",
    "/work/.policy/size.policy",
    Some(Path::new("/work/.policy/report")),
    &options
)?;

// for report in reports {
    // parse the file manually
    // this library does not yet provide a way to do this
// }

License

mmpolicy is licensed under either Apache License, Version 2.0 or MIT license, at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.