## Summary
* Adds Import and Export REST endpoints
* Fixes minor misc issues with types
* Changes camel case from bulk api to become snake_case
For the API and testing it is very similar to the saved objects API
For import:
```ts
POST /api/detection_engine/rules/_import
```
With a ndjson body of:
```ts
{"created_at":"2020-01-09T01:38:00.740Z","updated_at":"2020-01-09T01:38:00.740Z","created_by":"elastic_kibana","description":"Query with a rule_id that acts like an external id","enabled":true,"false_positives":[],"from":"now-6m","id":"6688f367-1aa2-4895-a5a8-b3701eecf57d","immutable":false,"interval":"5m","rule_id":"query-rule-id-1","language":"kuery","output_index":".siem-signals-frank-hassanabad-default","max_signals":100,"risk_score":1,"name":"Query with a rule id Number 1","query":"user.name: root or user.name: admin","references":[],"severity":"high","updated_by":"elastic_kibana","tags":[],"to":"now","type":"query","threats":[],"version":1}
{"created_at":"2020-01-09T01:38:00.745Z","updated_at":"2020-01-09T01:38:00.745Z","created_by":"elastic_kibana","description":"Query with a rule_id that acts like an external id","enabled":true,"false_positives":[],"from":"now-6m","id":"7a912444-6cfa-4c8f-83f4-2b26fb2a2ed9","immutable":false,"interval":"5m","rule_id":"query-rule-id-2","language":"kuery","output_index":".siem-signals-frank-hassanabad-default","max_signals":100,"risk_score":2,"name":"Query with a rule id Number 2","query":"user.name: root or user.name: admin","references":[],"severity":"low","updated_by":"elastic_kibana","tags":[],"to":"now","type":"query","threats":[],"version":1}
{"exported_count":2,"missing_rules":[],"missing_rules_count":0}
```
If you want to overwrite existing objects you can use the overwrite query parameter like so:
```ts
POST /api/detection_engine/rules/_import?overwrite=true
```
See and run the scripts of:
```ts
import_rules.sh
import_rules_no_overwrite.sh
```
For exporting everything:
```ts
POST /api/detection_engine/rules/_export
```
For exporting just a handful of things you would send a body like so:
```ts
POST /api/detection_engine/rules/_export
{
"objects": [
{
"rule_id": "query-rule-id-1"
},
{
"rule_id": "query-rule-id-2"
}
]
}
```
To change either the filename of the file that gets downloaded or to remove the extra appended export details you can do the following:
```ts
POST /api/detection_engine/rules/_export?exclude_export_details=true&file_name=my_file.ndjson"
```
See the scripts of:
```ts
export_rules.sh
export_rules_by_rule_id.sh
export_rules_by_rule_id_to_file.sh
export_rules_to_file.sh
```
### Checklist
Use ~~strikethroughs~~ to remove checklist items you don't feel are applicable to this PR.
~~- [ ] This was checked for cross-browser compatibility, [including a check against IE11](https://github.com/elastic/kibana/blob/master/CONTRIBUTING.md#cross-browser-compatibility)~~
~~- [ ] Any text added follows [EUI's writing guidelines](https://elastic.github.io/eui/#/guidelines/writing), uses sentence case text and includes [i18n support](https://github.com/elastic/kibana/blob/master/packages/kbn-i18n/README.md)~~
~~- [ ] [Documentation](https://github.com/elastic/kibana/blob/master/CONTRIBUTING.md#writing-documentation) was added for features that require explanation or tutorials~~
- [x] [Unit or functional tests](https://github.com/elastic/kibana/blob/master/CONTRIBUTING.md#cross-browser-compatibility) were updated or added to match the most common scenarios
~~- [ ] This was checked for [keyboard-only and screenreader accessibility](https://developer.mozilla.org/en-US/docs/Learn/Tools_and_testing/Cross_browser_testing/Accessibility#Accessibility_testing_checklist)~~
### For maintainers
~~- [ ] This was checked for breaking API changes and was [labeled appropriately](https://github.com/elastic/kibana/blob/master/CONTRIBUTING.md#release-notes-process)~~
- [x] This includes a feature addition or change that requires a release note and was [labeled appropriately](https://github.com/elastic/kibana/blob/master/CONTRIBUTING.md#release-notes-process)
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