The Fn project is an open-source container-native serverless platform that you can run anywhere – any cloud or on-premise. It’s easy to use, supports every programming language, and is extensible and performant.
You can access fnproject offical web site get all information or view on github.
Pre-requisites
- Docker 17.06 or later installed and runing
- A Docker Hub account or other Docker-compliant registry (like container-registry.oracle.com)
- If you need complie from source , you must install go
Install fn
you need login in your OPC vm , linux or windows
#linux
#default install /usr/local/bin
#[opc@cloud-node01 ~]$ whereis fn
fn: /usr/local/bin/fn
curl -LSs https://raw.githubusercontent.com/fnproject/cli/master/install | sh
#windows
#down it from https://github.com/fnproject/cli/releases
Start fn server wait a monent, fn need pull some image from docker registry
#you need permission access unix:///var/run/docker.sock [root@cloud-node01 opc]# [root@cloud-node01 opc]# fn start time="2018-03-31T00:24:42Z" level=info msg="Setting log level to" level=info time="2018-03-31T00:24:42Z" level=info msg="datastore dialed" datastore=sqlite3 max_idle_connections=256 time="2018-03-31T00:24:42Z" level=info msg="agent starting cfg=&{MinDockerVersion:17.06.0-ce FreezeIdle:50ms EjectIdle:1s HotPoll:200ms HotLauncherTimeout:1h0m0s AsyncChewPoll:1m0s MaxResponseSize:0 MaxLogSize:1048576 MaxTotalCPU:0 MaxTotalMemory:0 MaxFsSize:0 PreForkPoolSize:0 PreForkImage: PreForkCmd:}" time="2018-03-31T00:24:42Z" level=info msg="no docker auths from config files found (this is fine)" error="open /root/.dockercfg: no such file or directory" time="2018-03-31T00:24:42Z" level=info msg="available memory" availMemory=5658624000 cgroupLimit=9223372036854771712 headRoom=628736000 totalMemory=6287360000 time="2018-03-31T00:24:42Z" level=info msg="sync and async ram reservations" ramAsync=4526899200 ramAsyncHWMark=3621519360 ramSync=1131724800 time="2018-03-31T00:24:42Z" level=info msg="available cpu" availCPU=2000 totalCPU=2000 time="2018-03-31T00:24:42Z" level=info msg="sync and async cpu reservations" cpuAsync=1600 cpuAsyncHWMark=1280 cpuSync=400 time="2018-03-31T00:24:42Z" level=info msg="Fn serving on `:8080`" type=full ______ / ____/___ / /_ / __ \ / __/ / / / / /_/ /_/ /_/ v0.3.402Start your frist java serverless function
fn function SDK image
+ fnproject/fn-java-fdk
+ fnproject/python
+ fnproject/python
+ fnproject/go
+
FN_JAVA_FDK_VERSION=1.0.59 fn init --runtime java hellojava
[opc@cloud-node01 hellojava]$ fn deploy --app hellojava --local
Deploying hellojava to app: hellojava at path: /hellojava
Bumped to version 0.0.2
Building image hellojava:0.0.2 .
Updating route /hellojava using image hellojava:0.0.2...
[opc@cloud-node01 hellojava]$ fn apps l
hellojava
[opc@cloud-node01 hellojava]$ fn routes list hellojava
path image endpoint
/hellojava hellojava:0.0.2 localhost:8080/r/hellojava/hellojava
[opc@cloud-node01 hellojava]$ fn call hellojava /hellojava
Hello, world!
- Invoke your java function
You can use “fn call” or normal tools (etc. curl) access your java funciton
[opc@cloud-node01 hellojava]$ fn call hellojava /hellojava
Hello, world!
[opc@cloud-node01 hellojava]$ curl -X GET localhost:8080/r/hellojava/hellojava
Hello, world![opc@cloud-node01 hellojava]$
- Change code and redeploy in second
Let’s we add some thing and redploy, open HelloFunction.java and HelloFunctionTest.java
#vi hellojava/src/main/java/com/example/fn/HelloFunction.java
//return "Hello, " + name + "!";
return "Hello Serverless, " + name + "!";
#also you need change test
//vi src/test/java/com/example/fn/HelloFunctionTest.java
//assertEquals("Hello, world!", result.getBodyAsString());
assertEquals("Hello Serverless, world!", result.getBodyAsString());
#same deploy command
fn deploy --app hellojava --localIf you look for serverless framework or platform , may be you can try Fn project .
doc version 1 .