[Ingest pipelines] add support for fingerprint processor

x-pack/plugins/ingest_pipelines/public/application/components/pipeline_editor/__jest__/processors/fingerprint.test.tsx

@@ -0,0 +1,128 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0; you may not use this file except in compliance with the Elastic License
+ * 2.0.
+ */
+
+import { act } from 'react-dom/test-utils';
+import { setup, SetupResult, getProcessorValue } from './processor.helpers';
+
+// Default parameter values automatically added to the registered domain processor when saved
+const defaultFingerprintParameters = {
+  if: undefined,
+  tag: undefined,
+  method: 'SHA-1',
+  salt: undefined,
+  description: undefined,
+  ignore_missing: undefined,
+  ignore_failure: undefined,
+  target_field: undefined,
+};
+
+const FINGERPRINT_TYPE = 'fingerprint';
+
+describe('Processor: Fingerprint', () => {
+  let onUpdate: jest.Mock;
+  let testBed: SetupResult;
+
+  beforeAll(() => {
+    jest.useFakeTimers();
+  });
+
+  afterAll(() => {
+    jest.useRealTimers();
+  });
+
+  beforeEach(async () => {
+    onUpdate = jest.fn();
+
+    await act(async () => {
+      testBed = await setup({
+        value: {
+          processors: [],
+        },
+        onFlyoutOpen: jest.fn(),
+        onUpdate,
+      });
+    });
+
+    testBed.component.update();
+
+    // Open flyout to add new processor
+    testBed.actions.addProcessor();
+    // Add type (the other fields are not visible until a type is selected)
+    await testBed.actions.addProcessorType(FINGERPRINT_TYPE);
+  });
+
+  test('prevents form submission if required fields are not provided', async () => {
+    const {
+      actions: { saveNewProcessor },
+      form,
+    } = testBed;
+
+    // Click submit button with only the type defined
+    await saveNewProcessor();
+
+    // Expect form error as "field" is required parameter
+    expect(form.getErrorsMessages()).toEqual(['A field value is required.']);
+  });
+
+  test('saves with default parameter values', async () => {
+    const {
+      actions: { saveNewProcessor },
+      find,
+      component,
+    } = testBed;
+
+    // Add "fields" value (required)
+    await act(async () => {
+      find('fieldsValueField.input').simulate('change', [{ label: 'user' }]);
+    });
+    component.update();
+    // Save the field
+    await saveNewProcessor();
+
+    const processors = getProcessorValue(onUpdate, FINGERPRINT_TYPE);
+    expect(processors[0][FINGERPRINT_TYPE]).toEqual({
+      ...defaultFingerprintParameters,
+      fields: ['user'],
+    });
+  });
+
+  test('allows optional parameters to be set', async () => {
+    const {
+      actions: { saveNewProcessor },
+      form,
+      find,
+      component,
+    } = testBed;
+
+    // Add "fields" value (required)
+    await act(async () => {
+      find('fieldsValueField.input').simulate('change', [{ label: 'user' }]);
+    });
+    component.update();
+
+    // Set optional parameteres
+    form.setInputValue('targetField.input', 'target_field');
+    form.setSelectValue('methodsValueField', 'SHA-256');
+    form.setInputValue('saltValueField.input', 'salt');
+    form.toggleEuiSwitch('ignoreMissingSwitch.input');
+    form.toggleEuiSwitch('ignoreFailureSwitch.input');
+
+    // Save the field with new changes
+    await saveNewProcessor();
+
+    const processors = getProcessorValue(onUpdate, FINGERPRINT_TYPE);
+    expect(processors[0][FINGERPRINT_TYPE]).toEqual({
+      ...defaultFingerprintParameters,
+      fields: ['user'],
+      target_field: 'target_field',
+      method: 'SHA-256',
+      salt: 'salt',
+      ignore_missing: true,
+      ignore_failure: true,
+    });
+  });
+});

x-pack/plugins/ingest_pipelines/public/application/components/pipeline_editor/__jest__/processors/processor.helpers.tsx

@@ -153,4 +153,7 @@ type TestSubject =
   | 'separatorValueField.input'
   | 'quoteValueField.input'
   | 'emptyValueField.input'
+  | 'fieldsValueField.input'
+  | 'saltValueField.input'
+  | 'methodsValueField'
   | 'trimSwitch.input';

x-pack/plugins/ingest_pipelines/public/application/components/pipeline_editor/components/processor_form/processors/fingerprint.tsx

@@ -0,0 +1,152 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0; you may not use this file except in compliance with the Elastic License
+ * 2.0.
+ */
+
+import React, { FunctionComponent } from 'react';
+import { i18n } from '@kbn/i18n';
+import { EuiCode } from '@elastic/eui';
+import { FormattedMessage } from '@kbn/i18n/react';
+
+import { FieldsConfig, from, to } from './shared';
+import { TargetField } from './common_fields/target_field';
+import { IgnoreMissingField } from './common_fields/ignore_missing_field';
+import {
+  FIELD_TYPES,
+  Field,
+  UseField,
+  SelectField,
+  ComboBoxField,
+  fieldValidators,
+} from '../../../../../../shared_imports';
+
+const fieldsConfig: FieldsConfig = {
+  fields: {
+    type: FIELD_TYPES.COMBO_BOX,
+    deserializer: to.arrayOfStrings,
+    label: i18n.translate('xpack.ingestPipelines.pipelineEditor.fingerprint.fieldNameField', {
+      defaultMessage: 'Fields',
+    }),
+    helpText: i18n.translate('xpack.ingestPipelines.pipelineEditor.fingerprint.fieldNameHelpText', {
+      defaultMessage: 'Fields to include in the fingerprint.',
+    }),
+    validations: [
+      {
+        validator: fieldValidators.emptyField(
+          i18n.translate(
+            'xpack.ingestPipelines.pipelineEditor.fingerprint.fieldNameRequiredError',
+            {
+              defaultMessage: 'A field value is required.',
+            }
+          )
+        ),
+      },
+    ],
+  },
+  salt: {
+    type: FIELD_TYPES.TEXT,
+    serializer: from.emptyStringToUndefined,
+    label: i18n.translate('xpack.ingestPipelines.pipelineEditor.fingerprint.saltFieldLabel', {
+      defaultMessage: 'Salt (optional)',
+    }),
+    helpText: (
+      <FormattedMessage
+        id="xpack.ingestPipelines.pipelineEditor.fingerprint.saltHelpText"
+        defaultMessage="Salt value for the hash function."
+      />
+    ),
+  },
+  method: {
+    type: FIELD_TYPES.TEXT,
+    defaultValue: 'SHA-1',
+    serializer: from.emptyStringToUndefined,
+    label: i18n.translate('xpack.ingestPipelines.pipelineEditor.fingerprint.methodFieldLabel', {
+      defaultMessage: 'Method',
+    }),
+    helpText: (
+      <FormattedMessage
+        id="xpack.ingestPipelines.pipelineEditor.fingerprint.methodHelpText"
+        defaultMessage="Hash method used to compute the fingerprint."
+      />
+    ),
+  },
+};
+
+export const Fingerprint: FunctionComponent = () => {
+  return (
+    <>
+      <UseField
+        config={fieldsConfig.fields}
+        component={ComboBoxField}
+        path="fields.fields"
+        data-test-subj="fieldsValueField"
+      />
+
+      <TargetField
+        helpText={
+          <FormattedMessage
+            id="xpack.ingestPipelines.pipelineEditor.fingerprint.targetFieldHelpText"
+            defaultMessage="Output field. Defaults to {field}."
+            values={{
+              field: <EuiCode>{'fingerprint'}</EuiCode>,
+            }}
+          />
+        }
+      />
+
+      <UseField
+        componentProps={{
+          euiFieldProps: {
+            'data-test-subj': 'methodsValueField',
+            options: [
+              {
+                value: 'MD5',
+                text: 'MD5',
+              },
+              {
+                value: 'SHA-1',
+                text: 'SHA-1',
+              },
+              {
+                value: 'SHA-256',
+                text: 'SHA-256',
+              },
+              {
+                value: 'SHA-512',
+                text: 'SHA-512',
+              },
+              {
+                value: 'MurmurHash3',
+                text: 'MurmurHash3',
+              },
+            ],
+          },
+        }}
+        config={fieldsConfig.method}
+        component={SelectField}
+        path="fields.method"
+      />
+
+      <UseField
+        config={fieldsConfig.salt}
+        component={Field}
+        path="fields.salt"
+        data-test-subj="saltValueField"
+      />
+
+      <IgnoreMissingField
+        helpText={
+          <FormattedMessage
+            id="xpack.ingestPipelines.pipelineEditor.fingerprint.ignoreMissingFieldHelpText"
+            defaultMessage="Ignore any missing {field}."
+            values={{
+              field: <EuiCode>{'fields'}</EuiCode>,
+            }}
+          />
+        }
+      />
+    </>
+  );
+};

x-pack/plugins/ingest_pipelines/public/application/components/pipeline_editor/components/processor_form/processors/index.ts

@@ -17,6 +17,7 @@ export { DotExpander } from './dot_expander';
 export { Drop } from './drop';
 export { Enrich } from './enrich';
 export { Fail } from './fail';
+export { Fingerprint } from './fingerprint';
 export { Foreach } from './foreach';
 export { GeoIP } from './geoip';
 export { Grok } from './grok';

x-pack/plugins/ingest_pipelines/public/application/components/pipeline_editor/components/shared/map_processor_type_to_form.tsx

@@ -23,6 +23,7 @@ import {
   Drop,
   Enrich,
   Fail,
+  Fingerprint,
   Foreach,
   GeoIP,
   Grok,
@@ -308,6 +309,20 @@ export const mapProcessorTypeToDescriptor: MapProcessorTypeToDescriptor = {
         defaultMessage: 'Raises an exception that halts execution',
       }),
   },
+  fingerprint: {
+    FieldsComponent: Fingerprint,
+    docLinkPath: '/fingerprint-processor.html',
+    label: i18n.translate('xpack.ingestPipelines.processors.label.fingerprint', {
+      defaultMessage: 'Fingerprint',
+    }),
+    typeDescription: i18n.translate('xpack.ingestPipelines.processors.description.fingerprint', {
+      defaultMessage: 'Computes a hash of the document’s content.',
+    }),
+    getDefaultDescription: () =>
+      i18n.translate('xpack.ingestPipelines.processors.defaultDescription.fingerprint', {
+        defaultMessage: 'Computes a hash of the document’s content.',
+      }),
+  },
   foreach: {
     FieldsComponent: Foreach,
     docLinkPath: '/foreach-processor.html',