feat: Support MySQL/Redis/MongoDB/PostgreSQL/Zookeeper Native Client to check the data

[haoel]

Redis

client:
  - name: Redis Native Client (local)
    driver: "redis"  # driver is redis
    host: "localhost:6379"  # server and port
    data:         # Optional
      key: val    # Check that `key` exists and its value is `val`

MySQL

client
   - name: MySQL Native Client (local)
      driver: "mysql"
      host: "localhost:3306"
      data: # Optional, check the specific column value in the table
        #  Usage: "database:table:column:primary_key:value" : "expected_value"
        #         transfer to : "SELECT column FROM database.table WHERE primary_key = value"
        #         the `value` for `primary_key` must be int
        "test:product:name:id:1" : "EaseProbe" # select name from test.product where id = 1
        "test:employee:age:id:2" : 45          # select age from test.employee where id = 2

MongoDB

client:
  - name: MongoDB Native Client (local)
    driver: "mongo"
    host: "localhost:27017"
    data: # Optional, find the specific value in the table
      #  Usage: "database:collection" : "{JSON}"
      "test:employee" : '{"name":"Hao Chen"}' # find the employee with name "Hao Chen"
      "test:product" : '{"name":"EaseProbe"}' # find the product with name "EaseProbe"

PostgreSQL

client:
  - name: PostgreSQL Native Client (local)
    driver: "postgres"
    host: "localhost:5432"
    data: # Optional, check the specific column value in the table
      #  Usage: "database:table:column:primary_key:value" : "expected_value"
      #         transfer to : "SELECT column FROM table WHERE primary_key = value"
      #         the `value` for `primary_key` must be int
      "test:product:name:id:1" : "EaseProbe" # select name from product where id = 1
      "test:employee:age:id:2" : 45          # select age from employee where id = 2

Zookeeper

client:
  - name: Zookeeper Native Client (local)
    driver: "zookeeper"
    host: "localhost:2181"
    data: # Optional, check the specific value in the path
      "/path/to/key": "value" # Check that the value of the `/path/to/key` is "value"

[codecov-commenter]

Codecov Report

Merging #171 (dbf33b6) into main (8a4de80) will increase coverage by 0.46%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #171      +/-   ##
==========================================
+ Coverage   93.43%   93.89%   +0.46%     
==========================================
  Files          46       46              
  Lines        3411     3636     +225     
==========================================
+ Hits         3187     3414     +227     
+ Misses        157      155       -2     
  Partials       67       67              

Impacted Files	Coverage Δ
probe/client/client.go	100.00% <100.00%> (+5.40%)	⬆️
probe/client/conf/conf.go	86.95% <100.00%> (+4.60%)	⬆️
probe/client/kafka/kafka.go	100.00% <100.00%> (ø)
probe/client/memcache/memcache.go	100.00% <100.00%> (ø)
probe/client/mongo/mongo.go	100.00% <100.00%> (ø)
probe/client/mysql/mysql.go	100.00% <100.00%> (ø)
probe/client/postgres/postgres.go	100.00% <100.00%> (ø)
probe/client/redis/redis.go	100.00% <100.00%> (ø)
probe/client/zookeeper/zookeeper.go	100.00% <100.00%> (ø)
... and 5 more

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[zhao-kun]

Question: Do we need to support probing all nodes of a Redis cluster with one configuration?

[proditis]

LGTM not tested yet

[haoel]

Question: Do we need to support probing all nodes of a Redis cluster with one configuration?

At this moment, we don't have a plan to do this, we only can configure a cluster by individual configuration.

To introduce the cluster concept is good for configuration, but we have to separate the cluster into individual prober, and name every prober a unique name, and people might need a cluster-wide healthy status or SLA, this would bring complexity to the current design.

So, I'd like to be a businessman here, I want to see how many benefits we can get from this requirement. ;-)

[muicoder]

LGTM!