Regex example: Matching medical record numbers. The following sample uses a regular expression custom infoType detector that instructs Cloud DLP to match a medical record number (MRN) in the input text "Patient's MRN 444-5-22222," and then assigns each match a likelihood of POSSIBLE.
Explore further
For detailed documentation that includes this code sample, see the following:
Code sample
C#
To learn how to install and use the client library for Sensitive Data Protection, see Sensitive Data Protection client libraries .
To authenticate to Sensitive Data Protection, set up Application Default Credentials. For more information, see Set up authentication for a local development environment .
using
System
;
using
Google.Api.Gax.ResourceNames
;
using
Google.Cloud.Dlp.V2
;
public
class
InspectDataWithCustomRegex
{
public
static
InspectContentResponse
InspectDataCustomRegex
(
string
projectId
,
string
text
,
string
customRegex
,
InfoType
infoType
=
null
)
{
// Instantiate a client.
var
dlp
=
DlpServiceClient
.
Create
();
// Construct content item by setting the text.
var
contentItem
=
new
ContentItem
{
Value
=
text
};
// Construct the custom regex detector.
var
customInfoType
=
new
CustomInfoType
{
InfoType
=
infoType
??
new
InfoType
{
Name
=
"C_MRN"
},
Regex
=
new
CustomInfoType
.
Types
.
Regex
{
Pattern
=
customRegex
}
};
// Construct Inspect Config.
var
inspectConfig
=
new
InspectConfig
{
CustomInfoTypes
=
{
customInfoType
},
IncludeQuote
=
true
,
MinLikelihood
=
Likelihood
.
Possible
};
// Construct the request.
var
request
=
new
InspectContentRequest
{
ParentAsLocationName
=
new
LocationName
(
projectId
,
"global"
),
Item
=
contentItem
,
InspectConfig
=
inspectConfig
,
};
// Call the API.
var
response
=
dlp
.
InspectContent
(
request
);
// Inspect the results.
var
resultFindings
=
response
.
Result
.
Findings
;
Console
.
WriteLine
(
$"Findings: {resultFindings.Count}"
);
foreach
(
var
f
in
resultFindings
)
{
Console
.
WriteLine
(
"Quote: "
+
f
.
Quote
);
Console
.
WriteLine
(
"Info type: "
+
f
.
InfoType
.
Name
);
Console
.
WriteLine
(
"Likelihood: "
+
f
.
Likelihood
);
}
return
response
;
}
}
Go
To learn how to install and use the client library for Sensitive Data Protection, see Sensitive Data Protection client libraries .
To authenticate to Sensitive Data Protection, set up Application Default Credentials. For more information, see Set up authentication for a local development environment .
import
(
"context"
"fmt"
"io"
dlp
"cloud.google.com/go/dlp/apiv2"
"cloud.google.com/go/dlp/apiv2/dlppb"
)
// inspectWithCustomRegex inspect a data with custom regex pattern
func
inspectWithCustomRegex
(
w
io
.
Writer
,
projectID
,
textToInspect
,
customRegexPattern
,
infoTypeName
string
)
error
{
//projectID := "my-project-id"
//textToInspect := "Patients MRN 444-5-22222"
//customRegexPattern := "[1-9]{3}-[1-9]{1}-[1-9]{5}"
//infoTypeName := "C_MRN"
ctx
:=
context
.
Background
()
// Initialize a client once and reuse it to send multiple requests. Clients
// are safe to use across goroutines. When the client is no longer needed,
// call the Close method to cleanup its resources.
client
,
err
:=
dlp
.
NewClient
(
ctx
)
if
err
!=
nil
{
return
err
}
// Closing the client safely cleans up background resources.
defer
client
.
Close
()
// Specify the type and content to be inspected.
contentItem
:=
& dlppb
.
ContentItem
{
DataItem
:
& dlppb
.
ContentItem_ByteItem
{
ByteItem
:
& dlppb
.
ByteContentItem
{
Type
:
dlppb
.
ByteContentItem_TEXT_UTF8
,
Data
:
[]
byte
(
textToInspect
),
},
},
}
// Construct the custom regex detectors
customInfoType
:=
& dlppb
.
CustomInfoType
{
InfoType
:
& dlppb
.
InfoType
{
Name
:
infoTypeName
,
},
// Specify the regex pattern the inspection will look for.
Type
:
& dlppb
.
CustomInfoType_Regex_
{
Regex
:
& dlppb
.
CustomInfoType_Regex
{
Pattern
:
customRegexPattern
,
},
},
Likelihood
:
dlppb
.
Likelihood_POSSIBLE
,
}
// Construct the Inspect request to be sent by the client.
req
:=
& dlppb
.
InspectContentRequest
{
Parent
:
fmt
.
Sprintf
(
"projects/%s/locations/global"
,
projectID
),
Item
:
contentItem
,
// Construct the configuration for the Inspect request.
InspectConfig
:
& dlppb
.
InspectConfig
{
CustomInfoTypes
:
[]
*
dlppb
.
CustomInfoType
{
customInfoType
,
},
IncludeQuote
:
true
,
},
}
// Send the request.
resp
,
err
:=
client
.
InspectContent
(
ctx
,
req
)
if
err
!=
nil
{
return
err
}
// Parse the response and process results
fmt
.
Fprintf
(
w
,
"Findings: %v\n"
,
len
(
resp
.
Result
.
Findings
))
for
_
,
v
:=
range
resp
.
GetResult
().
Findings
{
fmt
.
Fprintf
(
w
,
"Quote: %v\n"
,
v
.
GetQuote
())
fmt
.
Fprintf
(
w
,
"Infotype Name: %v\n"
,
v
.
GetInfoType
().
GetName
())
fmt
.
Fprintf
(
w
,
"Likelihood: %v\n"
,
v
.
GetLikelihood
())
}
return
nil
}
Java
To learn how to install and use the client library for Sensitive Data Protection, see Sensitive Data Protection client libraries .
To authenticate to Sensitive Data Protection, set up Application Default Credentials. For more information, see Set up authentication for a local development environment .
import
com.google.cloud.dlp.v2. DlpServiceClient
;
import
com.google.privacy.dlp.v2. ByteContentItem
;
import
com.google.privacy.dlp.v2. ByteContentItem
. BytesType
;
import
com.google.privacy.dlp.v2. ContentItem
;
import
com.google.privacy.dlp.v2. CustomInfoType
;
import
com.google.privacy.dlp.v2. CustomInfoType
. Regex
;
import
com.google.privacy.dlp.v2. Finding
;
import
com.google.privacy.dlp.v2. InfoType
;
import
com.google.privacy.dlp.v2. InspectConfig
;
import
com.google.privacy.dlp.v2. InspectContentRequest
;
import
com.google.privacy.dlp.v2. InspectContentResponse
;
import
com.google.privacy.dlp.v2. Likelihood
;
import
com.google.privacy.dlp.v2. LocationName
;
import
com.google.protobuf. ByteString
;
import
java.io.IOException
;
public
class
InspectWithCustomRegex
{
public
static
void
main
(
String
[]
args
)
throws
Exception
{
// TODO(developer): Replace these variables before running the sample.
String
projectId
=
"your-project-id"
;
String
textToInspect
=
"Patients MRN 444-5-22222"
;
String
customRegexPattern
=
"[1-9]{3}-[1-9]{1}-[1-9]{5}"
;
inspectWithCustomRegex
(
projectId
,
textToInspect
,
customRegexPattern
);
}
// Inspects a BigQuery Table
public
static
void
inspectWithCustomRegex
(
String
projectId
,
String
textToInspect
,
String
customRegexPattern
)
throws
IOException
{
// Initialize client that will be used to send requests. This client only needs to be created
// once, and can be reused for multiple requests. After completing all of your requests, call
// the "close" method on the client to safely clean up any remaining background resources.
try
(
DlpServiceClient
dlp
=
DlpServiceClient
.
create
())
{
// Specify the type and content to be inspected.
ByteContentItem
byteItem
=
ByteContentItem
.
newBuilder
()
.
setType
(
BytesType
.
TEXT_UTF8
)
.
setData
(
ByteString
.
copyFromUtf8
(
textToInspect
))
.
build
();
ContentItem
item
=
ContentItem
.
newBuilder
().
setByteItem
(
byteItem
).
build
();
// Specify the regex pattern the inspection will look for.
Regex
regex
=
Regex
.
newBuilder
().
setPattern
(
customRegexPattern
).
build
();
// Construct the custom regex detector.
InfoType
infoType
=
InfoType
.
newBuilder
().
setName
(
"C_MRN"
).
build
();
CustomInfoType
customInfoType
=
CustomInfoType
.
newBuilder
().
setInfoType
(
infoType
).
setRegex
(
regex
).
build
();
// Construct the configuration for the Inspect request.
InspectConfig
config
=
InspectConfig
.
newBuilder
()
.
addCustomInfoTypes
(
customInfoType
)
.
setIncludeQuote
(
true
)
.
setMinLikelihood
(
Likelihood
.
POSSIBLE
)
.
build
();
// Construct the Inspect request to be sent by the client.
InspectContentRequest
request
=
InspectContentRequest
.
newBuilder
()
.
setParent
(
LocationName
.
of
(
projectId
,
"global"
).
toString
())
.
setItem
(
item
)
.
setInspectConfig
(
config
)
.
build
();
// Use the client to send the API request.
InspectContentResponse
response
=
dlp
.
inspectContent
(
request
);
// Parse the response and process results
System
.
out
.
println
(
"Findings: "
+
response
.
getResult
().
getFindingsCount
());
for
(
Finding
f
:
response
.
getResult
().
getFindingsList
())
{
System
.
out
.
println
(
"\tQuote: "
+
f
.
getQuote
());
System
.
out
.
println
(
"\tInfo type: "
+
f
.
getInfoType
().
getName
());
System
.
out
.
println
(
"\tLikelihood: "
+
f
.
getLikelihood
());
}
}
}
}
Node.js
To learn how to install and use the client library for Sensitive Data Protection, see Sensitive Data Protection client libraries .
To authenticate to Sensitive Data Protection, set up Application Default Credentials. For more information, see Set up authentication for a local development environment .
// Imports the Google Cloud Data Loss Prevention library
const
DLP
=
require
(
' @google-cloud/dlp
'
);
// Instantiates a client
const
dlp
=
new
DLP
.
DlpServiceClient
();
// The project ID to run the API call under
// const projectId = 'my-project';
// The string to inspect
// const string = 'Patients MRN 444-5-22222';
// The regex pattern to match for
// const customRegex = '[1-9]{3}-[1-9]{1}-[1-9]{5}';
async
function
inspectWithCustomRegex
()
{
// Construct item to inspect
const
item
=
{
byteItem
:
{
type
:
DLP
.
protos
.
google
.
privacy
.
dlp
.
v2
.
ByteContentItem
.
BytesType
.
TEXT_UTF8
,
data
:
Buffer
.
from
(
string
,
'utf-8'
),
},
};
// Construct the custom regex detector.
const
customInfoTypes
=
[
{
infoType
:
{
name
:
'C_MRN'
,
},
likelihood
:
DLP
.
protos
.
google
.
privacy
.
dlp
.
v2
.
Likelihood
.
POSSIBLE
,
regex
:
{
pattern
:
customRegex
,
},
},
];
// Construct request
const
request
=
{
parent
:
`projects/
${
projectId
}
/locations/global`
,
inspectConfig
:
{
customInfoTypes
:
customInfoTypes
,
includeQuote
:
true
,
},
item
:
item
,
};
// Run request
const
[
response
]
=
await
dlp
.
inspectContent
(
request
);
const
findings
=
response
.
result
.
findings
;
if
(
findings
.
length
>
0
)
{
console
.
log
(
'Findings: \n'
);
findings
.
forEach
(
finding
=
>
{
console
.
log
(
`InfoType:
${
finding
.
infoType
.
name
}
`
);
console
.
log
(
`\tQuote:
${
finding
.
quote
}
`
);
console
.
log
(
`\tLikelihood:
${
finding
.
likelihood
}
\n`
);
});
}
else
{
console
.
log
(
'No findings.'
);
}
}
inspectWithCustomRegex
();
PHP
To learn how to install and use the client library for Sensitive Data Protection, see Sensitive Data Protection client libraries .
To authenticate to Sensitive Data Protection, set up Application Default Credentials. For more information, see Set up authentication for a local development environment .
use Google\Cloud\Dlp\V2\Client\DlpServiceClient;
use Google\Cloud\Dlp\V2\ContentItem;
use Google\Cloud\Dlp\V2\CustomInfoType;
use Google\Cloud\Dlp\V2\CustomInfoType\Regex;
use Google\Cloud\Dlp\V2\InfoType;
use Google\Cloud\Dlp\V2\InspectConfig;
use Google\Cloud\Dlp\V2\InspectContentRequest;
use Google\Cloud\Dlp\V2\Likelihood;
/**
* Inspect data with a custom regex
* Regex example: Matching medical record numbers. The following sample uses a regular expression custom infoType detector that instructs Cloud DLP to match a medical record number (MRN) in the input text "Patient's MRN 444-5-22222," and then assigns each match a likelihood of POSSIBLE.
*
* @param string $projectId The Google Cloud project id to use as a parent resource.
* @param string $textToInspect The string to inspect.
*/
function inspect_custom_regex(
// TODO(developer): Replace sample parameters before running the code.
string $projectId,
string $textToInspect = 'Patients MRN 444-5-22222'
): void {
// Instantiate a client.
$dlp = new DlpServiceClient();
$parent = "projects/$projectId/locations/global";
// Specify what content you want the service to Inspect.
$item = (new ContentItem())
->setValue($textToInspect);
// Specify the regex pattern the inspection will look for.
$customRegexPattern = '[1-9]{3}-[1-9]{1}-[1-9]{5}';
// Construct the custom regex detector.
$cMrnDetector = (new InfoType())
->setName('C_MRN');
$customInfoType = (new CustomInfoType())
->setInfoType($cMrnDetector)
->setRegex((new Regex())
->setPattern($customRegexPattern))
->setLikelihood(Likelihood::POSSIBLE);
// Construct the configuration for the Inspect request.
$inspectConfig = (new InspectConfig())
->setCustomInfoTypes([$customInfoType])
->setIncludeQuote(true);
// Run request
$inspectContentRequest = (new InspectContentRequest())
->setParent($parent)
->setInspectConfig($inspectConfig)
->setItem($item);
$response = $dlp->inspectContent($inspectContentRequest);
// Print the results
$findings = $response->getResult()->getFindings();
if (count($findings) == 0) {
printf('No findings.' . PHP_EOL);
} else {
printf('Findings:' . PHP_EOL);
foreach ($findings as $finding) {
printf(' Quote: %s' . PHP_EOL, $finding->getQuote());
printf(' Info type: %s' . PHP_EOL, $finding->getInfoType()->getName());
printf(' Likelihood: %s' . PHP_EOL, Likelihood::name($finding->getLikelihood()));
}
}
}
Python
To learn how to install and use the client library for Sensitive Data Protection, see Sensitive Data Protection client libraries .
To authenticate to Sensitive Data Protection, set up Application Default Credentials. For more information, see Set up authentication for a local development environment .
import
google.cloud.dlp
def
inspect_data_with_custom_regex_detector
(
project
:
str
,
content_string
:
str
,
)
-
> None
:
"""Uses the Data Loss Prevention API to analyze string with medical record
number custom regex detector
Args:
project: The Google Cloud project id to use as a parent resource.
content_string: The string to inspect.
Returns:
None; the response from the API is printed to the terminal.
"""
# Instantiate a client.
dlp
=
google
.
cloud
.
dlp_v2
.
DlpServiceClient
()
# Construct a custom regex detector info type called "C_MRN",
# with ###-#-##### pattern, where each # represents a digit from 1 to 9.
# The detector has a detection likelihood of POSSIBLE.
custom_info_types
=
[
{
"info_type"
:
{
"name"
:
"C_MRN"
},
"regex"
:
{
"pattern"
:
"[1-9]
{3}
-[1-9]
{1}
-[1-9]
{5}
"
},
"likelihood"
:
google
.
cloud
.
dlp_v2
.
Likelihood
.
POSSIBLE
,
}
]
# Construct the configuration dictionary with the custom regex info type.
inspect_config
=
{
"custom_info_types"
:
custom_info_types
,
"include_quote"
:
True
,
}
# Construct the `item`.
item
=
{
"value"
:
content_string
}
# Convert the project id into a full resource id.
parent
=
f
"projects/
{
project
}
"
# Call the API.
response
=
dlp
.
inspect_content
(
request
=
{
"parent"
:
parent
,
"inspect_config"
:
inspect_config
,
"item"
:
item
}
)
# Print out the results.
if
response
.
result
.
findings
:
for
finding
in
response
.
result
.
findings
:
print
(
f
"Quote:
{
finding
.
quote
}
"
)
print
(
f
"Info type:
{
finding
.
info_type
.
name
}
"
)
print
(
f
"Likelihood:
{
finding
.
likelihood
}
"
)
else
:
print
(
"No findings."
)
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