loraserver 源码解析 (六) lora-app-server

下载源码

go get -u github.com/brocaar/lora-app-server

升级 npm

npm是nodejs 的包管理工具， lora-app-server有些网页是js写的，所以需要

下面这行命令 在我电脑的emacs eshell 下运行不行，那就在 terminal 下执行吧

sudo npm i -g npm

安装一些必要的依赖库

npm install -g create-react-app

lora-app-server的依赖库，参考之前的几篇文章，这里就不细讲了。

反正编译的时候缺啥，就 go get 下啥

我make build 后，提示缺了下面这些

api/common.pb.go:9:8: cannot find package "github.com/brocaar/loraserver/api/common" in any of:
	/home/wjs/go/src/github.com/brocaar/loraserver/api/common (from $GOROOT)
	/home/wjs/go/gopath/src/github.com/brocaar/loraserver/api/common (from $GOPATH)
internal/storage/user.go:14:2: cannot find package "github.com/dgrijalva/jwt-go" in any of:
	/home/wjs/go/src/github.com/dgrijalva/jwt-go (from $GOROOT)
	/home/wjs/go/gopath/src/github.com/dgrijalva/jwt-go (from $GOPATH)
cmd/lora-app-server/cmd/root_run.go:18:2: cannot find package "github.com/gorilla/mux" in any of:
	/home/wjs/go/src/github.com/gorilla/mux (from $GOROOT)
	/home/wjs/go/gopath/src/github.com/gorilla/mux (from $GOPATH)
internal/handler/influxdbhandler/influxdb_handler.go:16:2: cannot find package "github.com/mmcloughlin/geohash" in any of:
	/home/wjs/go/src/github.com/mmcloughlin/geohash (from $GOROOT)
	/home/wjs/go/gopath/src/github.com/mmcloughlin/geohash (from $GOPATH)
internal/codec/custom_js.go:11:2: cannot find package "github.com/robertkrimen/otto" in any of:
	/home/wjs/go/src/github.com/robertkrimen/otto (from $GOROOT)
	/home/wjs/go/gopath/src/github.com/robertkrimen/otto (from $GOPATH)
cmd/lora-app-server/cmd/root_run.go:27:2: cannot find package "github.com/tmc/grpc-websocket-proxy/wsproxy" in any of:
	/home/wjs/go/src/github.com/tmc/grpc-websocket-proxy/wsproxy (from $GOROOT)
	/home/wjs/go/gopath/src/github.com/tmc/grpc-websocket-proxy/wsproxy (from $GOPATH)

依次go get -u -v 即可

搞完后make build

build目录下生成了 lora-app-server

生成 配置文件

lora-app-server configfile > lora-app-server.toml

打开 lora-app-server.toml

删除第一行

创建合适的数据库

可以参考 ubuntu 16.04 安装 postgresql 10 并 配置成loraserver需要的

这次要生成的是 loraserver_as  上次是 loraserver_ns

as: app-server    ns network-server  也就是LoRa Wan 的as  ns

wjs@wjs:~$ su
Password: 
root@wjs:/home/wjs# su postgres
postgres@wjs:/home/wjs$ psql
psql (10.4 (Ubuntu 10.4-2.pgdg16.04+1))
Type "help" for help.

postgres=# create database loraserver_as owner dbuser;
CREATE DATABASE
postgres=# GRANT ALL PRIVILEGES ON DATABASE loraserver_as TO dbuser;
GRANT

打开 lora-app-server.toml  修改下 数据库的dsn  如下

dsn="postgres://dbuser:123456@localhost/loraserver_as?sslmode=disable"

pq_trgm extension

You also need to enable the pg_trgm (trigram) extension. Example to enable this extension (assuming your LoRa App Server database is named loraserver_as):

Start the PostgreSQL prompt as the postgres user:

sudo -u postgres psql

Within the PostgreSQL prompt, enter the following queries:

-- change to the LoRa App Server database
\c loraserver_as

-- enable the extension
create extension pg_trgm;

-- exit the prompt
\q

配置ssl

我也不太懂,信息随便填了一下

openssl genrsa -out server.key 2048
openssl req -new -x509 -key server.key -out server.crt -days 365
Country Name (2 letter code) [AU]:ch
State or Province Name (full name) [Some-State]:gz
Locality Name (eg, city) []:gz
Organization Name (eg, company) [Internet Widgits Pty Ltd]:zlg
Organizational Unit Name (eg, section) []:zlg
Common Name (e.g. server FQDN or YOUR name) []:wjs
Email Address []:[email protected]

这样 会生成 2个文件   server.crt 和 server.key

~/go/gopath/src/github.com/brocaar/lora-app-server/build $ ls
lora-app-server  lora-app-server.toml  server.crt  server.key

然后配置下 lora-app-server.toml 文件, 不配置程序起不来，不得不配置

  # Settings for the "external api"
  #
  # This is the API and web-interface exposed to the end-user.
  [application_server.external_api]
  # ip:port to bind the (user facing) http server to (web-interface and REST / gRPC api)
  bind="0.0.0.0:8080"

  # http server TLS certificate
  tls_cert="server.crt"

  # http server TLS key
  tls_key="server.key"

  # JWT secret used for api authentication / authorization
  # You could generate this by executing 'openssl rand -base64 32' for example
  jwt_secret="123456"

  # when set, existing users can't be re-assigned (to avoid exposure of all users to an organization admin)"
  disable_assign_existing_users=false

运行程序 lora-app-server  大功告成 :)

~/go/gopath/src/github.com/brocaar/lora-app-server/build $ lora-app-server 
INFO[0000] starting LoRa App Server                      docs="https://www.loraserver.io/" version=2.0.0-alpha.1-3-gb9999d3
INFO[0000] connecting to postgresql                     
INFO[0000] setup redis connection pool                  
INFO[0000] handler/mqtt: TLS config is empty            
INFO[0000] handler/mqtt: connecting to mqtt broker       server="tcp://localhost:1883"
INFO[0000] applying database migrations                 
INFO[0000] handler/mqtt: connected to mqtt broker       
INFO[0000] handler/mqtt: subscribing to tx topic         qos=0 topic=application/+/device/+/tx
INFO[0000] migrations applied                            count=0
INFO[0000] starting application-server api               bind="0.0.0.0:8001" ca-cert= tls-cert= tls-key=
INFO[0000] starting join-server api                      bind="0.0.0.0:8003" ca_cert= tls_cert= tls_key=
INFO[0000] starting client api server                    bind="0.0.0.0:8080" tls-cert=server.crt tls-key=server.key
INFO[0000] registering rest api handler and documentation endpoint  path=/api