Masking Data With MuleSoft DataWeave
Learn how to keep data private with DataWeave.
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Join For FreeIn this article, we will see various examples of how we can mask data using MuleSoft DataWeave. MuleSoft DataWeave has a helper function, mask, in the DW Utils Values module.
We will be using the payload below to understand the mask function.
JSON
x
1
[
2
{
3
"id": "1",
4
"firstName": "Tom",
5
"lastName": "Cruise",
6
"age":25,
7
"salary":20000
8
},
9
{
10
"id": "2",
11
"firstName": "Maria",
12
"lastName": "Sharapova",
13
"age":28,
14
"salary":10000
15
},
16
{
17
"id": "3",
18
"firstName": "James",
19
"lastName": "Bond",
20
"age":32,
21
"salary":30000
22
}
23
]
Example 1 - Mask the Age to "***"
We need to mask the age to "***". To do this, we can use the mask function.
JSON
xxxxxxxxxx
1
1
%dw 2.0
2
import * from dw::util::Values
3
output application/json
4
---
5
payload mask field("age") with "***"
Output:
JSON
x
1
[
2
{
3
"id": "1",
4
"firstName": "Tom",
5
"lastName": "Cruise",
6
"age": "***",
7
"salary": 20000
8
},
9
{
10
"id": "2",
11
"firstName": "Maria",
12
"lastName": "Sharapova",
13
"age": "***",
14
"salary": 10000
15
},
16
{
17
"id": "3",
18
"firstName": "James",
19
"lastName": "Bond",
20
"age": "***",
21
"salary": 30000
22
}
23
]
Example 2 - Mask the Age to "***" and Salary to "xxxx"
JSON
xxxxxxxxxx
1
1
%dw 2.0
2
import * from dw::util::Values
3
output application/json
4
---
5
(payload mask field("age") with "***") mask field("salary") with "xxxx"
Output:
JSON
xxxxxxxxxx
1
23
1
[
2
{
3
"id": "1",
4
"firstName": "Tom",
5
"lastName": "Cruise",
6
"age": "***",
7
"salary": "xxxx"
8
},
9
{
10
"id": "2",
11
"firstName": "Maria",
12
"lastName": "Sharapova",
13
"age": "***",
14
"salary": "xxxx"
15
},
16
{
17
"id": "3",
18
"firstName": "James",
19
"lastName": "Bond",
20
"age": "***",
21
"salary": "xxxx"
22
}
23
]
Example 3 - Format Salary to "$#,###.00"
JSON
xxxxxxxxxx
1
1
%dw 2.0
2
import * from dw::util::Values
3
output application/json
4
type Currency= String{format:"\$#,###.00"}
5
---
6
payload mask field("salary") with $ as Currency
JSON
xxxxxxxxxx
1
23
1
[
2
{
3
"id": "1",
4
"firstName": "Tom",
5
"lastName": "Cruise",
6
"age": 25,
7
"salary": "$20,000.00"
8
},
9
{
10
"id": "2",
11
"firstName": "Maria",
12
"lastName": "Sharapova",
13
"age": 28,
14
"salary": "$10,000.00"
15
},
16
{
17
"id": "3",
18
"firstName": "James",
19
"lastName": "Bond",
20
"age": 32,
21
"salary": "$30,000.00"
22
}
23
]
Example 4 - Convert FirstName and LastName to Uppercase
JSON
xxxxxxxxxx
1
1
%dw 2.0
2
import * from dw::util::Values
3
output application/json
4
type Currency= String{format:"\$#,###.00"}
5
---
6
(payload mask field("firstName") with upper($)) mask field("lastName") with upper($)
Output:
JSON
xxxxxxxxxx
1
23
1
[
2
{
3
"id": "1",
4
"firstName": "TOM",
5
"lastName": "CRUISE",
6
"age": 25,
7
"salary": 20000
8
},
9
{
10
"id": "2",
11
"firstName": "MARIA",
12
"lastName": "SHARAPOVA",
13
"age": 28,
14
"salary": 10000
15
},
16
{
17
"id": "3",
18
"firstName": "JAMES",
19
"lastName": "BOND",
20
"age": 32,
21
"salary": 30000
22
}
23
]
Now, you know how to mask data with MuleSoft DataWeave.
MuleSoft
Data (computing)
JSON
Masking (Electronic Health Record)
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