update

{              
  "metadata": {                // [required]
                               // Metadata associated with the cluster. Must include id of the cluster we are going to update.
    "id": string,              // [identifier]
                               // Identifier for the resource, unique for its resource type.
    "labels": {                // [map]
                               // Labels associated with the resource.
      string: string                  
    },
    "name": string,            // Human readable name for the resource.
    "parent_id": string,       // [required]
                               // Identifier of the parent resource to which the resource belongs.
    "resource_version": int64  // Version of the resource for safe concurrent modifications and consistent reads.
                               // Positive and monotonically increases on each resource spec change (but *not* on each change of the
                               // resource's container(s) or status).
                               // Service allows zero value or current.
  },
  "spec": {        // Updated specification for the cluster.
    "bootstrap": {             // [required]
      "user_password": string  // [sensitive] [input_only]
                               // Password of the bootstrap PostgreSQL user.
    },
    "config": {                 // [required]
      "pooler_config": {        // Configuration of the connection pooler.
        "max_pool_size": int64, // [optional]
                                // Maximum number of connections in the pool for a single user/database pair.
        "pooling_mode": enum(         // Mode that the connection pooler is working in.
          "POOLING_MODE_UNSPECIFIED",
          "SESSION",                  // Session pooling mode.
          "TRANSACTION"               // Transaction pooling mode.
        )
      },
      "postgresql_config_16": {                       // Configuration parameters for postgres.
        "autovacuum_analyze_scale_factor": double,    // [optional]
        "autovacuum_naptime": int64,                  // [optional]
                                                      // In seconds.
        "autovacuum_vacuum_cost_delay": int64,        // [optional]
                                                      // In milliseconds.
        "autovacuum_vacuum_cost_limit": int64,        // [optional]
        "autovacuum_vacuum_scale_factor": double,     // [optional]
        "autovacuum_work_mem": int64,                 // [optional]
                                                      // In kilobytes.
        "default_transaction_read_only": bool,        // [optional]
        "idle_in_transaction_session_timeout": int64, // [optional]
                                                      // In milliseconds.
        "max_connections": int64,                     // [optional]
        "search_path": string,                        // [optional]
        "shared_buffers": int64,                      // [optional]
                                                      // In kilobytes.
        "statement_timeout": int64                    // [optional]
                                                      // In milliseconds.
      },
      "public_access": bool,    // Either make cluster public accessible or accessible only via private VPC.
      "template": {    // [required]
                       // Resources allocated to PostgreSQL hosts.
        "disk": {                  // [required]
          "size_gibibytes": int64, // [required]
          "type": string           // [required]
        },
        "hosts": {        // [required]
          "count": int64  // [required]
        },
        "resources": {        // [required]
                              // Reduced msp.v1alpha1.resource.TemplateSpec.
          "platform": string, // [required]
          "preset": string    // [required]
        }
      }
    }
  }
}