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358 lines
11 KiB
358 lines
11 KiB
# Golang Admin Client API Reference [](https://slack.minio.io)
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## Initialize Minio Admin Client object.
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## Minio
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```go
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package main
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import (
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"fmt"
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"github.com/minio/minio/pkg/madmin"
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)
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func main() {
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// Use a secure connection.
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ssl := true
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// Initialize minio client object.
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mdmClnt, err := madmin.New("your-minio.example.com:9000", "YOUR-ACCESSKEYID", "YOUR-SECRETKEY", ssl)
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if err != nil {
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fmt.Println(err)
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return
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}
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// Fetch service status.
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st, err := mdmClnt.ServiceStatus()
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if err != nil {
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fmt.Println(err)
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return
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}
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fmt.Printf("%#v\n", st)
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}
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```
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| Service operations | LockInfo operations | Healing operations | Config operations | Misc |
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|:------------------------------------|:----------------------------|:--------------------------------------|:--------------------------|:------------------------------------|
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| [`ServiceStatus`](#ServiceStatus) | [`ListLocks`](#ListLocks) | [`Heal`](#Heal) | [`GetConfig`](#GetConfig) | [`SetCredentials`](#SetCredentials) |
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| [`ServiceSendAction`](#ServiceSendAction) | [`ClearLocks`](#ClearLocks) | | [`SetConfig`](#SetConfig) | |
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## 1. Constructor
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<a name="Minio"></a>
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### New(endpoint string, accessKeyID string, secretAccessKey string, ssl bool) (*AdminClient, error)
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Initializes a new admin client object.
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__Parameters__
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|Param |Type |Description |
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|:---|:---| :---|
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|`endpoint` | _string_ |Minio endpoint. |
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|`accessKeyID` |_string_ | Access key for the object storage endpoint. |
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|`secretAccessKey` | _string_ |Secret key for the object storage endpoint. |
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|`ssl` | _bool_ | Set this value to 'true' to enable secure (HTTPS) access. |
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## 2. Admin API Version
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<a name="VersionInfo"></a>
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### VersionInfo() (AdminAPIVersionInfo, error)
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Fetch server's supported Administrative API version.
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__Example__
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``` go
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info, err := madmClnt.VersionInfo()
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if err != nil {
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log.Fatalln(err)
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}
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log.Printf("%s\n", info.Version)
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```
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## 3. Service operations
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<a name="ServiceStatus"></a>
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### ServiceStatus() (ServiceStatusMetadata, error)
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Fetch service status, replies disk space used, backend type and total disks offline/online (applicable in distributed mode).
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| Param | Type | Description |
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|---|---|---|
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|`serviceStatus` | _ServiceStatusMetadata_ | Represents current server status info in following format: |
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| Param | Type | Description |
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|---|---|---|
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|`st.ServerVersion.Version` | _string_ | Server version. |
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|`st.ServerVersion.CommitID` | _string_ | Server commit id. |
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|`st.StorageInfo.Total` | _int64_ | Total disk space. |
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|`st.StorageInfo.Free` | _int64_ | Free disk space. |
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|`st.StorageInfo.Backend`| _struct{}_ | Represents backend type embedded structure. |
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| Param | Type | Description |
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|---|---|---|
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|`backend.Type` | _BackendType_ | Type of backend used by the server currently only FS or Erasure. |
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|`backend.OnlineDisks`| _int_ | Total number of disks online (only applies to Erasure backend), is empty for FS. |
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|`backend.OfflineDisks` | _int_ | Total number of disks offline (only applies to Erasure backend), is empty for FS. |
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|`backend.StandardSCParity` | _int_ | Parity disks set for standard storage class, is empty for FS. |
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|`backend.RRSCParity` | _int_ | Parity disks set for reduced redundancy storage class, is empty for FS. |
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__Example__
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```go
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st, err := madmClnt.ServiceStatus()
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if err != nil {
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log.Fatalln(err)
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}
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log.Printf("%#v\n", st)
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```
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<a name="ServiceSendAction"></a>
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### ServiceSendAction(act ServiceActionValue) (error)
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Sends a service action command to service - possible actions are restarting and stopping the server.
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__Example__
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```go
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// to restart
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st, err := madmClnt.ServiceSendAction(ServiceActionValueRestart)
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// or to stop
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// st, err := madmClnt.ServiceSendAction(ServiceActionValueStop)
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if err != nil {
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log.Fatalln(err)
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}
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log.Printf("Success")
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```
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## 4. Info operations
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<a name="ServerInfo"></a>
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### ServerInfo() ([]ServerInfo, error)
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Fetch all information for all cluster nodes, such as uptime, region, network statistics, etc..
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__Example__
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```go
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serversInfo, err := madmClnt.ServerInfo()
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if err != nil {
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log.Fatalln(err)
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}
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for _, peerInfo := range serversInfo {
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log.Printf("Node: %s, Info: %v\n", peerInfo.Addr, peerInfo.Data)
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}
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```
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## 5. Lock operations
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<a name="ListLocks"></a>
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### ListLocks(bucket, prefix string, duration time.Duration) ([]VolumeLockInfo, error)
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If successful returns information on the list of locks held on ``bucket`` matching ``prefix`` for longer than ``duration`` seconds.
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__Example__
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``` go
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volLocks, err := madmClnt.ListLocks("mybucket", "myprefix", 30 * time.Second)
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if err != nil {
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log.Fatalln(err)
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}
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log.Println("List of locks: ", volLocks)
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```
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<a name="ClearLocks"></a>
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### ClearLocks(bucket, prefix string, duration time.Duration) ([]VolumeLockInfo, error)
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If successful returns information on the list of locks cleared on ``bucket`` matching ``prefix`` for longer than ``duration`` seconds.
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__Example__
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``` go
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volLocks, err := madmClnt.ClearLocks("mybucket", "myprefix", 30 * time.Second)
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if err != nil {
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log.Fatalln(err)
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}
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log.Println("List of locks cleared: ", volLocks)
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```
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## 6. Heal operations
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<a name="Heal"></a>
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### Heal(bucket, prefix string, healOpts HealOpts, clientToken string, forceStart bool) (start HealStartSuccess, status HealTaskStatus, err error)
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Start a heal sequence that scans data under given (possible empty)
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`bucket` and `prefix`. The `recursive` bool turns on recursive
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traversal under the given path. `dryRun` does not mutate on-disk data,
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but performs data validation. `incomplete` enables healing of
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multipart uploads that are in progress. `removeBadFiles` removes
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unrecoverable files. `statisticsOnly` turns off detailed
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heal-operations reporting in the status call.
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Two heal sequences on overlapping paths may not be initiated.
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The progress of a heal should be followed using the `HealStatus`
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API. The server accumulates results of the heal traversal and waits
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for the client to receive and acknowledge them using the status
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API. When the statistics-only option is set, the server only maintains
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aggregates statistics - in this case, no acknowledgement of results is
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required.
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__Example__
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``` go
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healPath, err := madmClnt.HealStart("", "", true, false, true, false, false)
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if err != nil {
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log.Fatalln(err)
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}
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log.Printf("Heal sequence started at %s", healPath)
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```
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#### HealTaskStatus structure
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| Param | Type | Description |
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|----|--------|--------|
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| s.Summary | _string_ | Short status of heal sequence |
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| s.FailureDetail | _string_ | Error message in case of heal sequence failure |
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| s.HealSettings | _HealOpts_ | Contains the booleans set in the `HealStart` call |
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| s.Items | _[]HealResultItem_ | Heal records for actions performed by server |
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| s.Statistics | _HealStatistics_ | Aggregate of heal records from beginning |
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#### HealResultItem structure
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| Param | Type | Description |
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|------|-------|---------|
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| ResultIndex | _int64_ | Index of the heal-result record |
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| Type | _HealItemType_ | Represents kind of heal operation in the heal record |
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| Bucket | _string_ | Bucket name |
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| Object | _string_ | Object name |
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| Detail | _string_ | Details about heal operation |
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| DiskInfo.AvailableOn | _[]int_ | List of disks on which the healed entity is present and healthy |
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| DiskInfo.HealedOn | _[]int_ | List of disks on which the healed entity was restored |
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#### HealStatistics structure
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Most parameters represent the aggregation of heal operations since the
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start of the heal sequence.
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| Param | Type | Description |
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|-------|-----|----------|
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| NumDisks | _int_ | Number of disks configured in the backend |
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| NumBucketsScanned | _int64_ | Number of buckets scanned |
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| BucketsMissingByDisk | _map[int]int64_ | Map of disk to number of buckets missing |
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| BucketsAvailableByDisk | _map[int]int64_ | Map of disk to number of buckets available |
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| BucketsHealedByDisk | _map[int]int64_ | Map of disk to number of buckets healed on |
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| NumObjectsScanned | _int64_ | Number of objects scanned |
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| NumUploadsScanned | _int64_ | Number of uploads scanned |
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| ObjectsByAvailablePC | _map[int64]_ | Map of available part counts (after heal) to number of objects |
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| ObjectsByHealedPC | _map[int64]_ | Map of healed part counts to number of objects |
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| ObjectsMissingByDisk | _map[int64]_ | Map of disk number to number of objects with parts missing on that disk |
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| ObjectsAvailableByDisk | _map[int64]_ | Map of disk number to number of objects available on that disk |
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| ObjectsHealedByDisk | _map[int64]_ | Map of disk number to number of objects healed on that disk |
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__Example__
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``` go
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res, err := madmClnt.HealStatus("", "")
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if err != nil {
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log.Fatalln(err)
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}
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log.Printf("Heal sequence status data %#v", res)
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```
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## 7. Config operations
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<a name="GetConfig"></a>
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### GetConfig() ([]byte, error)
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Get config.json of a minio setup.
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__Example__
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``` go
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configBytes, err := madmClnt.GetConfig()
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if err != nil {
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log.Fatalf("failed due to: %v", err)
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}
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// Pretty-print config received as json.
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var buf bytes.Buffer
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err = json.Indent(buf, configBytes, "", "\t")
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if err != nil {
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log.Fatalf("failed due to: %v", err)
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}
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log.Println("config received successfully: ", string(buf.Bytes()))
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```
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<a name="SetConfig"></a>
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### SetConfig(config io.Reader) (SetConfigResult, error)
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Set config.json of a minio setup and restart setup for configuration
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change to take effect.
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| Param | Type | Description |
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|`st.Status` | _bool_ | true if set-config succeeded, false otherwise. |
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|`st.NodeSummary.Name` | _string_ | Network address of the node. |
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|`st.NodeSummary.ErrSet` | _bool_ | Bool representation indicating if an error is encountered with the node.|
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|`st.NodeSummary.ErrMsg` | _string_ | String representation of the error (if any) on the node.|
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__Example__
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``` go
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config := bytes.NewReader([]byte(`config.json contents go here`))
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result, err := madmClnt.SetConfig(config)
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if err != nil {
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log.Fatalf("failed due to: %v", err)
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}
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var buf bytes.Buffer
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enc := json.NewEncoder(&buf)
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enc.SetEscapeHTML(false)
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enc.SetIndent("", "\t")
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err = enc.Encode(result)
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if err != nil {
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log.Fatalln(err)
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}
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log.Println("SetConfig: ", string(buf.Bytes()))
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```
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## 8. Misc operations
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<a name="SetCredentials"></a>
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### SetCredentials() error
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Set new credentials of a Minio setup.
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__Example__
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``` go
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err = madmClnt.SetCredentials("YOUR-NEW-ACCESSKEY", "YOUR-NEW-SECRETKEY")
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if err != nil {
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log.Fatalln(err)
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}
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log.Println("New credentials successfully set.")
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```
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