forked from Deuxfleurs/garage
Alex
382e74c798
**Spec:** - [x] Start writing - [x] Specify all layout endpoints - [x] Specify all endpoints for operations on keys - [x] Specify all endpoints for operations on key/bucket permissions - [x] Specify all endpoints for operations on buckets - [x] Specify all endpoints for operations on bucket aliases View rendered spec at <https://git.deuxfleurs.fr/Deuxfleurs/garage/src/branch/admin-api/doc/drafts/admin-api.md> **Code:** - [x] Refactor code for admin api to use common api code that was created for K2V **General endpoints:** - [x] Metrics - [x] GetClusterStatus - [x] ConnectClusterNodes - [x] GetClusterLayout - [x] UpdateClusterLayout - [x] ApplyClusterLayout - [x] RevertClusterLayout **Key-related endpoints:** - [x] ListKeys - [x] CreateKey - [x] ImportKey - [x] GetKeyInfo - [x] UpdateKey - [x] DeleteKey **Bucket-related endpoints:** - [x] ListBuckets - [x] CreateBucket - [x] GetBucketInfo - [x] DeleteBucket - [x] PutBucketWebsite - [x] DeleteBucketWebsite **Operations on key/bucket permissions:** - [x] BucketAllowKey - [x] BucketDenyKey **Operations on bucket aliases:** - [x] GlobalAliasBucket - [x] GlobalUnaliasBucket - [x] LocalAliasBucket - [x] LocalUnaliasBucket **And also:** - [x] Separate error type for the admin API (this PR includes a quite big refactoring of error handling) - [x] Add management of website access - [ ] Check that nothing is missing wrt what can be done using the CLI - [ ] Improve formatting of the spec - [x] Make sure everyone is cool with the API design Fix #231 Fix #295 Co-authored-by: Alex Auvolat <alex@adnab.me> Reviewed-on: Deuxfleurs/garage#298 Co-authored-by: Alex <alex@adnab.me> Co-committed-by: Alex <alex@adnab.me>
603 lines
13 KiB
Markdown
603 lines
13 KiB
Markdown
# Specification of Garage's administration API
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**WARNING.** At this point, there is no comittement to stability of the APIs described in this document.
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We will bump the version numbers prefixed to each API endpoint at each time the syntax
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or semantics change, meaning that code that relies on these endpoint will break
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when changes are introduced.
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## Access control
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The admin API uses two different tokens for acces control, that are specified in the config file's `[admin]` section:
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- `metrics_token`: the token for accessing the Metrics endpoint (if this token is not set in the config file, the Metrics endpoint can be accessed without access control);
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- `admin_token`: the token for accessing all of the other administration endpoints (if this token is not set in the config file, access to these endpoints is disabled entirely).
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## Administration API endpoints
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### Metrics-related endpoints
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#### Metrics `GET /metrics`
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Returns internal Garage metrics in Prometheus format.
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### Cluster operations
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#### GetClusterStatus `GET /v0/status`
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Returns the cluster's current status in JSON, including:
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- ID of the node being queried and its version of the Garage daemon
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- Live nodes
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- Currently configured cluster layout
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- Staged changes to the cluster layout
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Example response body:
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```json
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{
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"node": "ec79480e0ce52ae26fd00c9da684e4fa56658d9c64cdcecb094e936de0bfe71f",
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"garage_version": "git:v0.8.0",
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"knownNodes": {
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"ec79480e0ce52ae26fd00c9da684e4fa56658d9c64cdcecb094e936de0bfe71f": {
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"addr": "10.0.0.11:3901",
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"is_up": true,
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"last_seen_secs_ago": 9,
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"hostname": "node1"
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},
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"4a6ae5a1d0d33bf895f5bb4f0a418b7dc94c47c0dd2eb108d1158f3c8f60b0ff": {
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"addr": "10.0.0.12:3901",
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"is_up": true,
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"last_seen_secs_ago": 1,
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"hostname": "node2"
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},
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"23ffd0cdd375ebff573b20cc5cef38996b51c1a7d6dbcf2c6e619876e507cf27": {
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"addr": "10.0.0.21:3901",
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"is_up": true,
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"last_seen_secs_ago": 7,
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"hostname": "node3"
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},
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"e2ee7984ee65b260682086ec70026165903c86e601a4a5a501c1900afe28d84b": {
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"addr": "10.0.0.22:3901",
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"is_up": true,
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"last_seen_secs_ago": 1,
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"hostname": "node4"
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}
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},
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"layout": {
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"version": 12,
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"roles": {
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"ec79480e0ce52ae26fd00c9da684e4fa56658d9c64cdcecb094e936de0bfe71f": {
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"zone": "dc1",
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"capacity": 4,
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"tags": [
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"node1"
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]
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},
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"4a6ae5a1d0d33bf895f5bb4f0a418b7dc94c47c0dd2eb108d1158f3c8f60b0ff": {
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"zone": "dc1",
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"capacity": 6,
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"tags": [
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"node2"
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]
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},
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"23ffd0cdd375ebff573b20cc5cef38996b51c1a7d6dbcf2c6e619876e507cf27": {
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"zone": "dc2",
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"capacity": 10,
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"tags": [
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"node3"
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]
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}
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},
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"stagedRoleChanges": {
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"e2ee7984ee65b260682086ec70026165903c86e601a4a5a501c1900afe28d84b": {
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"zone": "dc2",
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"capacity": 5,
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"tags": [
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"node4"
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]
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}
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}
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}
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}
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```
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#### ConnectClusterNodes `POST /v0/connect`
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Instructs this Garage node to connect to other Garage nodes at specified addresses.
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Example request body:
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```json
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[
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"ec79480e0ce52ae26fd00c9da684e4fa56658d9c64cdcecb094e936de0bfe71f@10.0.0.11:3901",
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"4a6ae5a1d0d33bf895f5bb4f0a418b7dc94c47c0dd2eb108d1158f3c8f60b0ff@10.0.0.12:3901"
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]
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```
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The format of the string for a node to connect to is: `<node ID>@<ip address>:<port>`, same as in the `garage node connect` CLI call.
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Example response:
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```json
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[
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{
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"success": true,
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"error": null
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},
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{
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"success": false,
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"error": "Handshake error"
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}
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]
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```
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#### GetClusterLayout `GET /v0/layout`
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Returns the cluster's current layout in JSON, including:
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- Currently configured cluster layout
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- Staged changes to the cluster layout
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(the info returned by this endpoint is a subset of the info returned by GetClusterStatus)
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Example response body:
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```json
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{
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"version": 12,
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"roles": {
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"ec79480e0ce52ae26fd00c9da684e4fa56658d9c64cdcecb094e936de0bfe71f": {
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"zone": "dc1",
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"capacity": 4,
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"tags": [
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"node1"
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]
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},
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"4a6ae5a1d0d33bf895f5bb4f0a418b7dc94c47c0dd2eb108d1158f3c8f60b0ff": {
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"zone": "dc1",
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"capacity": 6,
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"tags": [
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"node2"
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]
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},
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"23ffd0cdd375ebff573b20cc5cef38996b51c1a7d6dbcf2c6e619876e507cf27": {
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"zone": "dc2",
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"capacity": 10,
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"tags": [
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"node3"
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]
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}
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},
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"stagedRoleChanges": {
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"e2ee7984ee65b260682086ec70026165903c86e601a4a5a501c1900afe28d84b": {
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"zone": "dc2",
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"capacity": 5,
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"tags": [
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"node4"
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]
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}
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}
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}
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```
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#### UpdateClusterLayout `POST /v0/layout`
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Send modifications to the cluster layout. These modifications will
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be included in the staged role changes, visible in subsequent calls
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of `GetClusterLayout`. Once the set of staged changes is satisfactory,
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the user may call `ApplyClusterLayout` to apply the changed changes,
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or `Revert ClusterLayout` to clear all of the staged changes in
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the layout.
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Request body format:
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```json
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{
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<node_id>: {
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"capacity": <new_capacity>,
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"zone": <new_zone>,
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"tags": [
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<new_tag>,
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...
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]
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},
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<node_id_to_remove>: null,
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...
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}
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```
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Contrary to the CLI that may update only a subset of the fields
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`capacity`, `zone` and `tags`, when calling this API all of these
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values must be specified.
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#### ApplyClusterLayout `POST /v0/layout/apply`
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Applies to the cluster the layout changes currently registered as
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staged layout changes.
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Request body format:
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```json
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{
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"version": 13
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}
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```
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Similarly to the CLI, the body must include the version of the new layout
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that will be created, which MUST be 1 + the value of the currently
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existing layout in the cluster.
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#### RevertClusterLayout `POST /v0/layout/revert`
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Clears all of the staged layout changes.
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Request body format:
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```json
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{
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"version": 13
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}
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```
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Reverting the staged changes is done by incrementing the version number
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and clearing the contents of the staged change list.
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Similarly to the CLI, the body must include the incremented
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version number, which MUST be 1 + the value of the currently
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existing layout in the cluster.
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### Access key operations
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#### ListKeys `GET /v0/key`
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Returns all API access keys in the cluster.
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Example response:
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```json
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[
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{
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"id": "GK31c2f218a2e44f485b94239e",
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"name": "test"
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},
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{
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"id": "GKe10061ac9c2921f09e4c5540",
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"name": "test2"
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}
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]
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```
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#### CreateKey `POST /v0/key`
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Creates a new API access key.
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Request body format:
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```json
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{
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"name": "NameOfMyKey"
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}
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```
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#### ImportKey `POST /v0/key/import`
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Imports an existing API key.
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Request body format:
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```json
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{
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"accessKeyId": "GK31c2f218a2e44f485b94239e",
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"secretAccessKey": "b892c0665f0ada8a4755dae98baa3b133590e11dae3bcc1f9d769d67f16c3835",
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"name": "NameOfMyKey"
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}
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```
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#### GetKeyInfo `GET /v0/key?id=<acces key id>`
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#### GetKeyInfo `GET /v0/key?search=<pattern>`
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Returns information about the requested API access key.
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If `id` is set, the key is looked up using its exact identifier (faster).
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If `search` is set, the key is looked up using its name or prefix
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of identifier (slower, all keys are enumerated to do this).
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Example response:
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```json
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{
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"name": "test",
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"accessKeyId": "GK31c2f218a2e44f485b94239e",
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"secretAccessKey": "b892c0665f0ada8a4755dae98baa3b133590e11dae3bcc1f9d769d67f16c3835",
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"permissions": {
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"createBucket": false
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},
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"buckets": [
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{
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"id": "70dc3bed7fe83a75e46b66e7ddef7d56e65f3c02f9f80b6749fb97eccb5e1033",
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"globalAliases": [
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"test2"
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],
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"localAliases": [],
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"permissions": {
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"read": true,
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"write": true,
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"owner": false
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}
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},
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{
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"id": "d7452a935e663fc1914f3a5515163a6d3724010ce8dfd9e4743ca8be5974f995",
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"globalAliases": [
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"test3"
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],
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"localAliases": [],
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"permissions": {
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"read": true,
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"write": true,
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"owner": false
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}
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},
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{
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"id": "e6a14cd6a27f48684579ec6b381c078ab11697e6bc8513b72b2f5307e25fff9b",
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"globalAliases": [],
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"localAliases": [
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"test"
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],
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"permissions": {
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"read": true,
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"write": true,
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"owner": true
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}
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},
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{
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"id": "96470e0df00ec28807138daf01915cfda2bee8eccc91dea9558c0b4855b5bf95",
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"globalAliases": [
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"alex"
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],
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"localAliases": [],
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"permissions": {
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"read": true,
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"write": true,
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"owner": true
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}
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}
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]
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}
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```
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#### DeleteKey `DELETE /v0/key?id=<acces key id>`
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Deletes an API access key.
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#### UpdateKey `POST /v0/key?id=<acces key id>`
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Updates information about the specified API access key.
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Request body format:
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```json
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{
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"name": "NameOfMyKey",
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"allow": {
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"createBucket": true,
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},
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"deny": {}
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}
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```
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All fields (`name`, `allow` and `deny`) are optionnal.
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If they are present, the corresponding modifications are applied to the key, otherwise nothing is changed.
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The possible flags in `allow` and `deny` are: `createBucket`.
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### Bucket operations
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#### ListBuckets `GET /v0/bucket`
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Returns all storage buckets in the cluster.
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Example response:
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```json
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[
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{
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"id": "70dc3bed7fe83a75e46b66e7ddef7d56e65f3c02f9f80b6749fb97eccb5e1033",
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"globalAliases": [
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"test2"
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],
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"localAliases": []
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},
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{
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"id": "96470e0df00ec28807138daf01915cfda2bee8eccc91dea9558c0b4855b5bf95",
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"globalAliases": [
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"alex"
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],
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"localAliases": []
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},
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{
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"id": "d7452a935e663fc1914f3a5515163a6d3724010ce8dfd9e4743ca8be5974f995",
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"globalAliases": [
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"test3"
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],
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"localAliases": []
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},
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{
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"id": "e6a14cd6a27f48684579ec6b381c078ab11697e6bc8513b72b2f5307e25fff9b",
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"globalAliases": [],
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"localAliases": [
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{
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"accessKeyId": "GK31c2f218a2e44f485b94239e",
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"alias": "test"
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}
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]
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}
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]
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```
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#### GetBucketInfo `GET /v0/bucket?id=<bucket id>`
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#### GetBucketInfo `GET /v0/bucket?globalAlias=<alias>`
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Returns information about the requested storage bucket.
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If `id` is set, the bucket is looked up using its exact identifier.
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If `globalAlias` is set, the bucket is looked up using its global alias.
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(both are fast)
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Example response:
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```json
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{
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"id": "e6a14cd6a27f48684579ec6b381c078ab11697e6bc8513b72b2f5307e25fff9b",
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"globalAliases": [
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"alex"
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],
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"keys": [
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{
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"accessKeyId": "GK31c2f218a2e44f485b94239e",
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"name": "alex",
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"permissions": {
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"read": true,
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"write": true,
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"owner": true
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},
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"bucketLocalAliases": [
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"test"
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]
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}
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]
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}
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```
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#### CreateBucket `POST /v0/bucket`
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Creates a new storage bucket.
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Request body format:
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```json
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{
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"globalAlias": "NameOfMyBucket"
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}
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```
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OR
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```json
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{
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"localAlias": {
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"accessKeyId": "GK31c2f218a2e44f485b94239e",
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"alias": "NameOfMyBucket",
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"allow": {
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"read": true,
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"write": true,
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"owner": false
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}
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}
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}
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```
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OR
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```json
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{}
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```
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Creates a new bucket, either with a global alias, a local one,
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or no alias at all.
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Technically, you can also specify both `globalAlias` and `localAlias` and that would create
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two aliases, but I don't see why you would want to do that.
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#### DeleteBucket `DELETE /v0/bucket?id=<bucket id>`
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Deletes a storage bucket. A bucket cannot be deleted if it is not empty.
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Warning: this will delete all aliases associated with the bucket!
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#### PutBucketWebsite `PUT /v0/bucket/website?id=<bucket id>`
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Sets the website configuration for a bucket (this also enables website access for this bucket).
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Request body format:
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```json
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{
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"indexDocument": "index.html",
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"errorDocument": "404.html"
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}
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```
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The field `errorDocument` is optional, if no error document is set a generic error message is displayed when errors happen.
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#### DeleteBucketWebsite `DELETE /v0/bucket/website?id=<bucket id>`
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Deletes the website configuration for a bucket (disables website access for this bucket).
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### Operations on permissions for keys on buckets
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#### BucketAllowKey `POST /v0/bucket/allow`
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Allows a key to do read/write/owner operations on a bucket.
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Request body format:
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|
|
```json
|
|
{
|
|
"bucketId": "e6a14cd6a27f48684579ec6b381c078ab11697e6bc8513b72b2f5307e25fff9b",
|
|
"accessKeyId": "GK31c2f218a2e44f485b94239e",
|
|
"permissions": {
|
|
"read": true,
|
|
"write": true,
|
|
"owner": true
|
|
},
|
|
}
|
|
```
|
|
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|
Flags in `permissions` which have the value `true` will be activated.
|
|
Other flags will remain unchanged.
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|
|
|
#### BucketDenyKey `POST /v0/bucket/deny`
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|
|
|
Denies a key from doing read/write/owner operations on a bucket.
|
|
|
|
Request body format:
|
|
|
|
```json
|
|
{
|
|
"bucketId": "e6a14cd6a27f48684579ec6b381c078ab11697e6bc8513b72b2f5307e25fff9b",
|
|
"accessKeyId": "GK31c2f218a2e44f485b94239e",
|
|
"permissions": {
|
|
"read": false,
|
|
"write": false,
|
|
"owner": true
|
|
},
|
|
}
|
|
```
|
|
|
|
Flags in `permissions` which have the value `true` will be deactivated.
|
|
Other flags will remain unchanged.
|
|
|
|
|
|
### Operations on bucket aliases
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|
|
|
#### GlobalAliasBucket `PUT /v0/bucket/alias/global?id=<bucket id>&alias=<global alias>`
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|
|
|
Empty body. Creates a global alias for a bucket.
|
|
|
|
#### GlobalUnaliasBucket `DELETE /v0/bucket/alias/global?id=<bucket id>&alias=<global alias>`
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|
|
|
Removes a global alias for a bucket.
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|
|
|
#### LocalAliasBucket `PUT /v0/bucket/alias/local?id=<bucket id>&accessKeyId=<access key ID>&alias=<local alias>`
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|
|
|
Empty body. Creates a local alias for a bucket in the namespace of a specific access key.
|
|
|
|
#### LocalUnaliasBucket `DELETE /v0/bucket/alias/local?id=<bucket id>&accessKeyId<access key ID>&alias=<local alias>`
|
|
|
|
Removes a local alias for a bucket in the namespace of a specific access key.
|
|
|