NOTICE: Experimental Preview
Prerequisite: enabling JetStream
If you are running a local nats-server stop it and restart it with JetStream enabled using nats-server -js (if that's not already done)
You can then check that JetStream is enabled by using
Which should output something like:
复制 Connection Information:
Client ID: 6
Client IP: 127.0.0.1
RTT: 64.996µs
Headers Supported: true
Maximum Payload: 1.0 MiB
Connected URL: nats://127.0.0.1:4222
Connected Address: 127.0.0.1:4222
Connected Server ID: ND2XVDA4Q363JOIFKJTPZW3ZKZCANH7NJI4EJMFSSPTRXDBFG4M4C34K
JetStream Account Information:
Memory: 0 B of Unlimited
Storage: 0 B of Unlimited
Streams: 0 of Unlimited
Consumers: 0 of Unlimited If you see the below instead then JetStream is not enabled
复制 JetStream Account Information:
JetStream is not supported in this account Creating an Object Store bucket
Just like you need to create streams before you can use them you need to first create an Object Store bucket
复制 nats object add myobjbucket which outputs
复制 myobjbucket Object Store Status
Bucket Name: myobjbucket
Replicas: 1
TTL: unlimitd
Sealed: false
Size: 0 B
Backing Store Kind: JetStream
JetStream Stream: OBJ_myobjbucket Putting a file in the bucket
复制 nats object put myobjbucket ~/Movies/NATS-logo.mov
复制 1.5 GiB / 1.5 GiB [====================================================================================]
Object information for myobjbucket > /Users/jnmoyne/Movies/NATS-logo.mov
Size: 1.5 GiB
Modification Time: 14 Apr 22 00:34 +0000
Chunks: 12,656
Digest: sha-256 8ee0679dd1462de393d81a3032d71f43d2bc89c0c8a557687cfe2787e926 Listing the objects in a bucket
复制 nats object ls myobjbucket
复制 ╭───────────────────────────────────────────────────────────────────────────╮
│ Bucket Contents │
├─────────────────────────────────────┬─────────┬───────────────────────────┤
│ Name │ Size │ Time │
├─────────────────────────────────────┼─────────┼───────────────────────────┤
│ /Users/jnmoyne/Movies/NATS-logo.mov │ 1.5 GiB │ 2022-04-13T17:34:55-07:00 │
╰─────────────────────────────────────┴─────────┴───────────────────────────╯ Getting an object from the bucket
复制 nats object get myobjbucket ~/Movies/NATS-logo.mov
复制 1.5 GiB / 1.5 GiB [====================================================================================]
Wrote: 1.5 GiB to /Users/jnmoyne/NATS-logo.mov in 5.68s average 279 MiB/s Removing an object from the bucket
复制 nats object rm myobjbucket ~/Movies/NATS-logo.mov
复制 ? Delete 1.5 GiB byte file myobjbucket > /Users/jnmoyne/Movies/NATS-logo.mov? Yes
Removed myobjbucket > /Users/jnmoyne/Movies/NATS-logo.mov
myobjbucket Object Store Status
Bucket Name: myobjbucket
Replicas: 1
TTL: unlimitd
Sealed: false
Size: 16 MiB
Backing Store Kind: JetStream
JetStream Stream: OBJ_myobjbucket Getting information about the bucket
复制 nats object info myobjbucket
复制 myobjbucket Object Store Status
Bucket Name: myobjbucket
Replicas: 1
TTL: unlimitd
Sealed: false
Size: 1.6 GiB
Backing Store Kind: JetStream
JetStream Stream: OBJ_myobjbucket Watching for changes to a bucket
复制 nats object watch myobjbucket
复制 [2022-04-13 17:51:28] PUT myobjbucket > /Users/jnmoyne/Movies/NATS-logo.mov: 1.5 GiB bytes in 12,656 chunks
[2022-04-13 17:53:27] DEL myobjbucket > /Users/jnmoyne/Movies/NATS-logo.mov Sealing a bucket
You can seal a bucket, meaning that no further changes are allowed on that bucket
复制 nats object seal myobjbucket
复制 ? Really seal Bucket myobjbucket, sealed buckets can not be unsealed or modified Yes
myobjbucket has been sealed
myobjbucket Object Store Status
Bucket Name: myobjbucket
Replicas: 1
TTL: unlimitd
Sealed: true
Size: 1.6 GiB
Backing Store Kind: JetStream
JetStream Stream: OBJ_myobjbucket Deleting a bucket
Using nats object rm myobjbucket will delete the bucket and all the files stored in it.