[collector,manager]feature 支持postgresql数据库的监控 (#16)

manager/src/main/resources/define/app/postgresql.yml

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+category: db
+app: postgresql
+name:
+  zh-CN: PostgreSQL数据库
+  en-US: PostgreSQL DB
+# 参数映射map. type是参数类型: 0-number数字, 1-string明文字符串, 2-secret加密字符串
+# 强制固定必须参数 - host
+configmap:
+  - key: host
+    type: 1
+  - key: port
+    type: 0
+  - key: username
+    type: 1
+  - key: password
+    type: 2
+  - key: database
+    type: 1
+  - key: url
+    type: 1
+# 指标组列表
+metrics:
+  - name: basic
+    # 指标组调度优先级(0-127)越小优先级越高,优先级低的指标组会等优先级高的指标组采集完成后才会被调度,相同优先级的指标组会并行调度采集
+    # 优先级为0的指标组为可用性指标组,即它会被首先调度,采集成功才会继续调度其它指标组,采集失败则中断调度
+    priority: 0
+    # 指标组中的具体监控指标
+    fields:
+      # 指标信息 包括 field名称   type字段类型:0-number数字,1-string字符串   instance是否为实例主键   unit:指标单位
+      - field: server_version
+        type: 1
+        instance: true
+      - field: port
+        type: 1
+      - field: server_encoding
+        type: 1
+      - field: data_directory
+        type: 1
+      - field: max_connections
+        type: 0
+        unit: 连接数
+    protocol: jdbc
+    jdbc:
+      # 主机host: ipv4 ipv6 域名
+      host: ^_^host^_^
+      # 端口
+      port: ^_^port^_^
+      platform: postgresql
+      username: ^_^username^_^
+      password: ^_^password^_^
+      database: ^_^database^_^
+      # SQL查询方式： oneRow, multiRow, columns
+      queryType: columns
+      # sql
+      sql: select name, setting as value from pg_settings where name = 'max_connections' or name = 'server_version' or name = 'server_encoding' or name = 'port' or name = 'data_directory';
+      url: ^_^url^_^
+
+  - name: state
+    priority: 1
+    fields:
+      # 指标信息 包括 field名称   type字段类型:0-number数字,1-string字符串   instance是否为实例主键   unit:指标单位
+      - field: name
+        type: 1
+      - field: conflicts
+        type: 0
+        unit: 次数
+      - field: deadlocks
+        type: 0
+        unit: 个数
+      - field: blks_read
+        type: 0
+        unit: 次数
+      - field: blks_hit
+        type: 0
+        unit: 次数
+      - field: blk_read_time
+        type: 0
+        unit: ms
+      - field: blk_write_time
+        type: 0
+        unit: ms
+      - field: stats_reset
+        type: 1
+    protocol: jdbc
+    jdbc:
+      # 主机host: ipv4 ipv6 域名
+      host: ^_^host^_^
+      # 端口
+      port: ^_^port^_^
+      platform: postgresql
+      username: ^_^username^_^
+      password: ^_^password^_^
+      database: ^_^database^_^
+      # SQL查询方式： oneRow, multiRow, columns
+      queryType: multiRow
+      # sql
+      sql: SELECT COALESCE(datname,'shared-object') as name, conflicts, deadlocks, blks_read, blks_hit, blk_read_time, blk_write_time, stats_reset from pg_stat_database where (datname != 'template1' and datname != 'template0') or datname is null;
+      url: ^_^url^_^
+
+  - name: activity
+    priority: 2
+    fields:
+      # 指标信息 包括 field名称   type字段类型:0-number数字,1-string字符串   instance是否为实例主键   unit:指标单位
+      - field: running
+        type: 0
+        unit: 连接数
+    protocol: jdbc
+    jdbc:
+      # 主机host: ipv4 ipv6 域名
+      host: ^_^host^_^
+      # 端口
+      port: ^_^port^_^
+      platform: postgresql
+      username: ^_^username^_^
+      password: ^_^password^_^
+      database: ^_^database^_^
+      # SQL查询方式： oneRow, multiRow, columns
+      queryType: oneRow
+      # sql
+      sql: SELECT count(*) as running FROM pg_stat_activity WHERE NOT pid=pg_backend_pid();
+      url: ^_^url^_^

manager/src/main/resources/define/param/postgresql.yml

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+app: postgresql
+param:
+  - field: host
+    name: 主机Host
+    type: host
+    required: true
+  - field: port
+    name: 端口
+    type: number
+    range: '[0,65535]'
+    required: true
+    defaultValue: 5432
+    placeholder: '请输入端口'
+  - field: database
+    name: 数据库名称
+    type: text
+    required: false
+  - field: username
+    name: 用户名
+    type: text
+    limit: 20
+    required: false
+  - field: password
+    name: 密码
+    type: password
+    required: false
+  - field: url
+    name: URL
+    type: text
+    required: false