> For the complete documentation index, see [llms.txt](https://contracts.synapseprotocol.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://contracts.synapseprotocol.com/bridge/testing/nodeenv.md).

# NodeEnv

*Synapse Authors*

> NodeEnv contract

This contract implements a key-value store for storing variables on which synapse nodes must coordinate methods are purposely arbitrary to allow these fields to be defined in synapse improvement proposals.This token is used for configuring different tokens on the bridge and mapping them across chains.\*

## Methods

### BRIDGEMANAGER\_ROLE

```solidity
function BRIDGEMANAGER_ROLE() external view returns (bytes32)
```

#### Returns

| Name | Type    | Description |
| ---- | ------- | ----------- |
| \_0  | bytes32 | undefined   |

### DEFAULT\_ADMIN\_ROLE

```solidity
function DEFAULT_ADMIN_ROLE() external view returns (bytes32)
```

#### Returns

| Name | Type    | Description |
| ---- | ------- | ----------- |
| \_0  | bytes32 | undefined   |

### get

```solidity
function get(string _key) external view returns (string)
```

gets the value associated with the key

#### Parameters

| Name  | Type   | Description |
| ----- | ------ | ----------- |
| \_key | string | undefined   |

#### Returns

| Name | Type   | Description |
| ---- | ------ | ----------- |
| \_0  | string | undefined   |

### getRoleAdmin

```solidity
function getRoleAdmin(bytes32 role) external view returns (bytes32)
```

*Returns the admin role that controls `role`. See {grantRole} and {revokeRole}. To change a role's admin, use {\_setRoleAdmin}.*

#### Parameters

| Name | Type    | Description |
| ---- | ------- | ----------- |
| role | bytes32 | undefined   |

#### Returns

| Name | Type    | Description |
| ---- | ------- | ----------- |
| \_0  | bytes32 | undefined   |

### getRoleMember

```solidity
function getRoleMember(bytes32 role, uint256 index) external view returns (address)
```

*Returns one of the accounts that have `role`. `index` must be a value between 0 and {getRoleMemberCount}, non-inclusive. Role bearers are not sorted in any particular way, and their ordering may change at any point. WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure you perform all queries on the same block. See the following <https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296\\[forum> post] for more information.*

#### Parameters

| Name  | Type    | Description |
| ----- | ------- | ----------- |
| role  | bytes32 | undefined   |
| index | uint256 | undefined   |

#### Returns

| Name | Type    | Description |
| ---- | ------- | ----------- |
| \_0  | address | undefined   |

### getRoleMemberCount

```solidity
function getRoleMemberCount(bytes32 role) external view returns (uint256)
```

*Returns the number of accounts that have `role`. Can be used together with {getRoleMember} to enumerate all bearers of a role.*

#### Parameters

| Name | Type    | Description |
| ---- | ------- | ----------- |
| role | bytes32 | undefined   |

#### Returns

| Name | Type    | Description |
| ---- | ------- | ----------- |
| \_0  | uint256 | undefined   |

### grantRole

```solidity
function grantRole(bytes32 role, address account) external nonpayable
```

*Grants `role` to `account`. If `account` had not been already granted `role`, emits a {RoleGranted} event. Requirements: - the caller must have `role`'s admin role.*

#### Parameters

| Name    | Type    | Description |
| ------- | ------- | ----------- |
| role    | bytes32 | undefined   |
| account | address | undefined   |

### hasRole

```solidity
function hasRole(bytes32 role, address account) external view returns (bool)
```

*Returns `true` if `account` has been granted `role`.*

#### Parameters

| Name    | Type    | Description |
| ------- | ------- | ----------- |
| role    | bytes32 | undefined   |
| account | address | undefined   |

#### Returns

| Name | Type | Description |
| ---- | ---- | ----------- |
| \_0  | bool | undefined   |

### keyCount

```solidity
function keyCount() external view returns (uint256)
```

get the length of the config

*this is useful for enumerating through all keys in the env*

#### Returns

| Name | Type    | Description |
| ---- | ------- | ----------- |
| \_0  | uint256 | undefined   |

### keyValueByIndex

```solidity
function keyValueByIndex(uint256 index) external view returns (string, string)
```

gets the key/value pair by it's index Requirements: - `index` must be strictly less than {length}.

#### Parameters

| Name  | Type    | Description |
| ----- | ------- | ----------- |
| index | uint256 | undefined   |

#### Returns

| Name | Type   | Description |
| ---- | ------ | ----------- |
| \_0  | string | undefined   |
| \_1  | string | undefined   |

### renounceRole

```solidity
function renounceRole(bytes32 role, address account) external nonpayable
```

*Revokes `role` from the calling account. Roles are often managed via {grantRole} and {revokeRole}: this function's purpose is to provide a mechanism for accounts to lose their privileges if they are compromised (such as when a trusted device is misplaced). If the calling account had been granted `role`, emits a {RoleRevoked} event. Requirements: - the caller must be `account`.*

#### Parameters

| Name    | Type    | Description |
| ------- | ------- | ----------- |
| role    | bytes32 | undefined   |
| account | address | undefined   |

### revokeRole

```solidity
function revokeRole(bytes32 role, address account) external nonpayable
```

*Revokes `role` from `account`. If `account` had been granted `role`, emits a {RoleRevoked} event. Requirements: - the caller must have `role`'s admin role.*

#### Parameters

| Name    | Type    | Description |
| ------- | ------- | ----------- |
| role    | bytes32 | undefined   |
| account | address | undefined   |

### set

```solidity
function set(string _key, string _value) external nonpayable returns (bool)
```

sets the key

*caller must have bridge manager role*

#### Parameters

| Name    | Type   | Description |
| ------- | ------ | ----------- |
| \_key   | string | undefined   |
| \_value | string | undefined   |

#### Returns

| Name | Type | Description |
| ---- | ---- | ----------- |
| \_0  | bool | undefined   |

## Events

### ConfigUpdate

```solidity
event ConfigUpdate(string key)
```

#### Parameters

| Name | Type   | Description |
| ---- | ------ | ----------- |
| key  | string | undefined   |

### RoleAdminChanged

```solidity
event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole)
```

#### Parameters

| Name                        | Type    | Description |
| --------------------------- | ------- | ----------- |
| role `indexed`              | bytes32 | undefined   |
| previousAdminRole `indexed` | bytes32 | undefined   |
| newAdminRole `indexed`      | bytes32 | undefined   |

### RoleGranted

```solidity
event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender)
```

#### Parameters

| Name              | Type    | Description |
| ----------------- | ------- | ----------- |
| role `indexed`    | bytes32 | undefined   |
| account `indexed` | address | undefined   |
| sender `indexed`  | address | undefined   |

### RoleRevoked

```solidity
event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender)
```

#### Parameters

| Name              | Type    | Description |
| ----------------- | ------- | ----------- |
| role `indexed`    | bytes32 | undefined   |
| account `indexed` | address | undefined   |
| sender `indexed`  | address | undefined   |


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