{
  "definitions": {
    "connection": {
      "if": {
        "properties": {
          "type": { "enum": ["cassandra", "mysql", "postgresql", "sqlserver"] }
        }
      },
      "oneOf": [
        {
          "additionalProperties": false,
          "description": "Schema for configuring Cassandra database connection parameters",
          "examples": [
            {
              "cache": {
                "database": "myDB",
                "hosts": ["localhost"],
                "password": "myPassword",
                "port": 9042,
                "type": "cassandra",
                "user": "myUser"
              }
            }
          ],
          "properties": {
            "database": { "description": "DB name", "type": "string" },
            "hosts": {
              "description": "Cassandra hosts",
              "items": {
                "title": "Address of Cassandra node",
                "type": "string"
              },
              "type": "array"
            },
            "password": { "description": "DB password", "type": "string" },
            "port": {
              "default": 9042,
              "description": "Cassandra DB port",
              "maximum": 65535,
              "minimum": 1,
              "type": "integer"
            },
            "type": {
              "const": "cassandra",
              "description": "DB type",
              "type": "string"
            },
            "user": { "description": "DB user", "type": "string" }
          },
          "required": ["type", "hosts"],
          "title": "Cassandra",
          "type": "object"
        },
        {
          "description": "Schema for configuring DB2 database connection parameters",
          "examples": [
            {
              "db2": {
                "connect_args": {
                  "ssl_ca": "/opt/ssl/ca.crt",
                  "ssl_cert": "/opt/ssl/client.crt",
                  "ssl_key": "/opt/ssl/client.key"
                },
                "database": "sample",
                "host": "localhost",
                "password": "mypass",
                "port": 50000,
                "type": "db2",
                "user": "myuser"
              }
            }
          ],
          "properties": {
            "connect_args": {
              "additionalProperties": true,
              "description": "Additional arguments to use when connecting to the DB",
              "type": "object"
            },
            "database": { "description": "DB name", "type": "string" },
            "host": { "description": "DB host", "type": "string" },
            "password": { "description": "DB password", "type": "string" },
            "port": {
              "description": "DB port",
              "maximum": 65535,
              "minimum": 1,
              "type": "integer"
            },
            "query_args": {
              "additionalProperties": true,
              "description": "Additional query string arguments to use when connecting to the DB",
              "type": "object"
            },
            "type": {
              "const": "db2",
              "description": "Connection type",
              "type": "string"
            },
            "user": { "description": "DB user", "type": "string" }
          },
          "required": ["type", "host", "port", "database", "user"],
          "title": "DB2",
          "type": "object"
        },
        {
          "additionalProperties": false,
          "description": "Schema for configuring HTTP connection parameters",
          "examples": [
            {
              "base_uri": "https://api.example.com",
              "headers": {
                "Authorization": {
                  "expression": "concat([ 'Bearer ', token])",
                  "language": "jmespath"
                },
                "Content-Type": "application/json"
              },
              "query_parameters": {
                "id": { "expression": "user_id", "language": "jmespath" },
                "timestamp": { "expression": "date('now')", "language": "sql" }
              }
            }
          ],
          "properties": {
            "base_uri": {
              "description": "Base URI for the API endpoint",
              "type": "string"
            },
            "headers": {
              "additionalProperties": {
                "oneOf": [
                  { "type": "string" },
                  {
                    "properties": {
                      "expression": {
                        "description": "Expression",
                        "type": "string"
                      },
                      "language": {
                        "description": "Language",
                        "enum": ["jmespath", "sql"],
                        "type": "string"
                      }
                    },
                    "required": ["expression", "language"],
                    "type": "object"
                  }
                ]
              },
              "description": "HTTP headers, including authorization token",
              "type": "object"
            },
            "query_parameters": {
              "additionalProperties": {
                "oneOf": [
                  { "type": "string" },
                  {
                    "properties": {
                      "expression": {
                        "description": "Expression",
                        "type": "string"
                      },
                      "language": {
                        "description": "Language",
                        "enum": ["jmespath", "sql"],
                        "type": "string"
                      }
                    },
                    "required": ["expression", "language"],
                    "type": "object"
                  }
                ]
              },
              "description": "Default query parameters for all API endpoints",
              "type": "object"
            },
            "timeout": {
              "default": 10,
              "description": "Timeout for HTTP connection in seconds",
              "type": "integer"
            },
            "type": {
              "const": "http",
              "description": "Connection type",
              "type": "string"
            }
          },
          "required": ["type", "base_uri"],
          "title": "HTTP Connection",
          "type": "object"
        },
        {
          "description": "Schema for configuring MySQL database connection parameters",
          "examples": [
            {
              "hr": {
                "connect_args": {
                  "ssl_ca": "/opt/ssl/ca.crt",
                  "ssl_cert": "/opt/ssl/client.crt",
                  "ssl_key": "/opt/ssl/client.key"
                },
                "database": "hr",
                "host": "localhost",
                "password": "mypass",
                "port": 3306,
                "type": "mysql",
                "user": "myuser"
              }
            }
          ],
          "properties": {
            "connect_args": {
              "additionalProperties": true,
              "description": "Additional arguments to use when connecting to the DB",
              "type": "object"
            },
            "database": { "description": "DB name", "type": "string" },
            "host": { "description": "DB host", "type": "string" },
            "password": { "description": "DB password", "type": "string" },
            "port": {
              "description": "DB port",
              "maximum": 65535,
              "minimum": 1,
              "type": "integer"
            },
            "query_args": {
              "additionalProperties": true,
              "description": "Additional query string arguments to use when connecting to the DB",
              "type": "object"
            },
            "type": {
              "const": "mysql",
              "description": "Connection type",
              "type": "string"
            },
            "user": { "description": "DB user", "type": "string" }
          },
          "required": ["type", "host", "port", "database", "user"],
          "title": "MySQL",
          "type": "object"
        },
        {
          "description": "Schema for configuring Oracle database connection parameters",
          "examples": [
            {
              "hr": {
                "database": "orcl",
                "host": "localhost",
                "oracle_thick_mode": true,
                "oracle_thick_mode_lib_dir": "/opt/oracle/instantclient_21_8/",
                "password": "tiger",
                "port": 5432,
                "type": "oracle",
                "user": "scott"
              }
            }
          ],
          "properties": {
            "connect_args": {
              "additionalProperties": true,
              "description": "Additional arguments to use when connecting to the DB",
              "type": "object"
            },
            "database": { "description": "DB name", "type": "string" },
            "driver": { "description": "Driver", "type": "string" },
            "host": { "description": "DB host", "type": "string" },
            "oracle_thick_mode": {
              "default": false,
              "description": "Enable oracle's thick mode(requires installed Oracle Client)",
              "type": "boolean"
            },
            "oracle_thick_mode_lib_dir": {
              "description": "Path to Oracle Client libraries",
              "type": "string"
            },
            "password": { "description": "DB password", "type": "string" },
            "port": {
              "description": "DB port",
              "maximum": 65535,
              "minimum": 1,
              "type": "integer"
            },
            "query_args": {
              "additionalProperties": true,
              "description": "Additional query string arguments to use when connecting to the DB",
              "type": "object"
            },
            "type": {
              "const": "oracle",
              "description": "Connection type",
              "type": "string"
            },
            "user": { "description": "DB user", "type": "string" }
          },
          "required": ["type", "host", "port", "database", "user"],
          "title": "Oracle",
          "type": "object"
        },
        {
          "description": "Schema for configuring PostgreSQL database connection parameters",
          "examples": [
            {
              "hr": {
                "connect_args": { "connect_timeout": 10 },
                "database": "postgres",
                "host": "localhost",
                "password": "postgres",
                "port": 5432,
                "query_args": {
                  "sslcert": "/opt/ssl/client.crt",
                  "sslkey": "/opt/ssl/client.key",
                  "sslmode": "verify-ca",
                  "sslrootcert": "/opt/ssl/ca.crt"
                },
                "type": "postgresql",
                "user": "postgres"
              }
            }
          ],
          "properties": {
            "connect_args": {
              "additionalProperties": true,
              "description": "Additional arguments to use when connecting to the DB",
              "type": "object"
            },
            "database": { "description": "DB name", "type": "string" },
            "host": { "description": "DB host", "type": "string" },
            "password": { "description": "DB password", "type": "string" },
            "port": {
              "description": "DB port",
              "maximum": 65535,
              "minimum": 1,
              "type": "integer"
            },
            "query_args": {
              "additionalProperties": true,
              "description": "Additional query string arguments to use when connecting to the DB",
              "type": "object"
            },
            "type": {
              "const": "postgresql",
              "description": "Connection type",
              "type": "string"
            },
            "user": { "description": "DB user", "type": "string" }
          },
          "required": ["type", "host", "port", "database", "user"],
          "title": "PostgreSQL",
          "type": "object"
        },
        {
          "additionalProperties": false,
          "dependentRequired": {
            "cert": ["key"],
            "key": ["cert"],
            "key_password": ["key"]
          },
          "description": "Schema for configuring Redis database connection parameters",
          "examples": [
            {
              "cache": {
                "health_check_interval": 60,
                "host": "localhost",
                "port": 6379,
                "socket_connect_timeout": 2.0,
                "socket_keepalive": true,
                "socket_timeout": 10.0,
                "type": "redis"
              }
            }
          ],
          "properties": {
            "cacert": {
              "description": "CA certificate file to verify with",
              "type": "string"
            },
            "cert": {
              "description": "Client certificate file to authenticate with",
              "type": "string"
            },
            "health_check_interval": {
              "default": 60,
              "description": "Interval for health checks in seconds",
              "minimum": 0,
              "type": "number"
            },
            "host": { "description": "Redis DB host", "type": "string" },
            "key": {
              "description": "Private key file to authenticate with",
              "type": "string"
            },
            "key_password": {
              "description": "Password for unlocking an encrypted private key",
              "type": "string"
            },
            "password": {
              "description": "Redis DB password",
              "type": "string"
            },
            "port": {
              "description": "Redis DB port",
              "maximum": 65535,
              "minimum": 1,
              "type": "integer"
            },
            "socket_connect_timeout": {
              "default": 2.0,
              "description": "Socket connection timeout in seconds",
              "minimum": 0,
              "type": "number"
            },
            "socket_keepalive": {
              "default": true,
              "description": "Enable/disable TCP keepalive",
              "type": "boolean"
            },
            "socket_timeout": {
              "default": 10.0,
              "description": "Socket timeout in seconds",
              "minimum": 0,
              "type": "number"
            },
            "type": {
              "const": "redis",
              "description": "Connection type",
              "type": "string"
            },
            "user": { "description": "Redis DB user", "type": "string" }
          },
          "required": ["type", "host", "port"],
          "title": "Redis",
          "type": "object"
        },
        {
          "description": "Schema for configuring SQL Server database connection parameters",
          "examples": [
            {
              "hr": {
                "database": "hr",
                "host": "localhost",
                "password": "mypass",
                "port": 1433,
                "type": "sqlserver",
                "user": "myuser"
              }
            }
          ],
          "properties": {
            "connect_args": {
              "additionalProperties": true,
              "description": "Additional arguments to use when connecting to the DB",
              "type": "object"
            },
            "database": { "description": "DB name", "type": "string" },
            "host": { "description": "DB host", "type": "string" },
            "password": { "description": "DB password", "type": "string" },
            "port": {
              "description": "DB port",
              "maximum": 65535,
              "minimum": 1,
              "type": "integer"
            },
            "query_args": {
              "additionalProperties": true,
              "description": "Additional query string arguments to use when connecting to the DB",
              "type": "object"
            },
            "type": {
              "const": "sqlserver",
              "description": "Connection type",
              "type": "string"
            },
            "user": { "description": "DB user", "type": "string" }
          },
          "required": ["type", "host", "port", "database", "user"],
          "title": "SQL Server",
          "type": "object"
        }
      ],
      "required": ["type"],
      "then": {
        "properties": {
          "connect_args": {
            "description": "Additional arguments to use when connecting to the DB",
            "type": "object"
          },
          "debug": {
            "default": false,
            "description": "Echo all SQL commands to stdout",
            "title": "Debug mode",
            "type": "boolean"
          },
          "driver": {
            "description": "Explicit driver to use, if not using default",
            "type": "string"
          },
          "query_args": {
            "description": "Additional query string arguments to use when connecting to the DB",
            "type": "object"
          }
        }
      },
      "type": "object"
    }
  },
  "description": "Connection catalog",
  "patternProperties": {
    ".": { "$ref": "#/definitions/connection", "type": "object" }
  },
  "title": "Connections",
  "type": ["object", "null"]
}