mapdata() example with CFEngine

gistfile1.txt

bundle agent main
{
  methods:
      "test";

  vars:
      "test_state" data => bundlestate(test);
      "test_string" string => storejson(test_state);

  reports:
      "$(this.bundle): state of things = $(test_string)";
}

bundle agent test
{
  vars:
      "load" data => parsejson('{ "a": { "a1": "V1", "a2": "V2" }, "b": { "b1": "V1", "b2": "V2" }, "c": [ 100, 200, 300 ] }');
      "load2[mykey]" slist => { "a", "b", "c" };
      "load3" data => '[ {"k": "v1"}, {"k": "v2"}]';

      "jsonspec" string => '{ "key": "$(this.k)", "key2": "$(this.k[1])", "value": "$(this.v)" }';

      "users" data => '
         [
            { "user": "joe",
              "hash": "*KRB*",
              "uid" : "1357",
              "promisee": "sysadmin team",
            },
            { "user": "bob",
              "hash": "*LCK*",
              "uid" : "1354",
              "promisee": "sysadmin team",
            }
         ]
     ';

      "userkeys" data => mapdata("none", '$(users[$(this.k)][user])', users);
      "userkeys_slist" slist => getvalues(userkeys);
      "mapdata_json" data => mapdata("json", $(jsonspec), load);
      "mapdata_json2" data => mapdata("json", $(jsonspec), load2);

      "mapdata_json3" data => mapdata("none", "$(this.v)", load3);
}

output:

R: main: state of things = {
  "jsonspec": "{ \"key\": \"$(this.k)\", \"key2\": \"$(this.k[1])\", \"value\": \"$(this.v)\" }",
  "load": {
    "a": {
      "a1": "V1",
      "a2": "V2"
    },
    "b": {
      "b1": "V1",
      "b2": "V2"
    },
    "c": [
      100,
      200,
      300
    ]
  },
  "load2[mykey]": [
    "a",
    "b",
    "c"
  ],
  "load3": [
    {
      "k": "v1"
    },
    {
      "k": "v2"
    }
  ],
  "mapdata_json": [
    {
      "key": "a",
      "key2": "a1",
      "value": "V1"
    },
    {
      "key": "a",
      "key2": "a2",
      "value": "V2"
    },
    {
      "key": "b",
      "key2": "b1",
      "value": "V1"
    },
    {
      "key": "b",
      "key2": "b2",
      "value": "V2"
    },
    {
      "key": "c",
      "key2": "$(this.k[1])",
      "value": "100"
    },
    {
      "key": "c",
      "key2": "$(this.k[1])",
      "value": "200"
    },
    {
      "key": "c",
      "key2": "$(this.k[1])",
      "value": "300"
    }
  ],
  "mapdata_json2": [
    {
      "key": "mykey",
      "key2": "$(this.k[1])",
      "value": "a"
    },
    {
      "key": "mykey",
      "key2": "$(this.k[1])",
      "value": "b"
    },
    {
      "key": "mykey",
      "key2": "$(this.k[1])",
      "value": "c"
    }
  ],
  "mapdata_json3": [
    "v1",
    "v2"
  ],
  "userkeys": [
    "joe",
    "bob"
  ],
  "userkeys_slist": [
    "joe",
    "bob"
  ],
  "users": [
    {
      "hash": "*KRB*",
      "promisee": "sysadmin team",
      "uid": "1357",
      "user": "joe"
    },
    {
      "hash": "*LCK*",
      "promisee": "sysadmin team",
      "uid": "1354",
      "user": "bob"
    }
  ]
}