File node
A File node is most often used to track a configuration file. The files that are tracked for each OS are specified by patterns. File nodes are under the full control of patterns.
For detailed information about patterns, see the The-Pattern-Language-TPL and Configipedia.
File node lifecycle
The following section describes the scenarios in which a File node is created, updated or removed.
Creation/update
This is under the full control of patterns and as a result there is no default File node behavior.
The generated key for a File node is entirely dependent on the pattern that creates the File node.
Removal
A File node can be destroyed in one of following ways:
- Explicitly by the pattern that created it. See Removal in the Pattern Language guide
- If the File node is triggered from another Inferred node, then when this inferred node is destroyed, so will the File node. This is a Cascade Removal type, see Cascade Removal.
- Manually, by selecting the necessary File node, and picking Destroy from the Actions list.
Attributes of the File node
The attributes of the File node are described in the following table:
| UI Name Attribute Name and Type | Description |
|---|---|
| Path path : string | Path to file |
| Size size : int | Size in bytes |
| MD5 Checksum md5sum : string | MD5 checksum |
| Last Modified last_modified : string | Last modified time |
| Content content : string | File content |
Relationships of the File node
The relationships of the File node are described in the following table:
| UI Name | Relationship | Description |
|---|---|---|
| Clusters Depending Upon This | DependedUpon: Dependency: Dependant: Cluster | Clusters that depend on this File |
| Contained Software Instances Depending Upon This | DependedUpon: Dependency: Dependant: ContainedSoftwareInstance | Contained Software Instances that depend on this File |
| Databases Depending Upon This | DependedUpon: Dependency: Dependant: Database | Databases that depend on this File |
| Details Depending Upon This | DependedUpon: Dependency: Dependant: Detail | Details that depend on this File |
| Software Clusters Depending Upon This | DependedUpon: Dependency: Dependant: SoftwareCluster | Software Clusters that depend on this File |
| Software Components Depending Upon This | DependedUpon: Dependency: Dependant: SoftwareComponent | Software Components that depend on this File |
| Software Containers Depending Upon This | DependedUpon: Dependency: Dependant: SoftwareContainer | Software Containers that depend on this File |
| Software Instances Depending Upon This | DependedUpon: Dependency: Dependant: SoftwareInstance | Software Instances that depend on this File |
| Software Pods Depending Upon This | DependedUpon: Dependency: Dependant: SoftwarePod | Software Pods that depend on this File |
| Virtual Machines Depending Upon This | DependedUpon: Dependency: Dependant: VirtualMachine | Virtual Machines that depend on this File |
| Host | HostedFile: HostedFile: Host: Host | The Host of this this File |
| Maintaining Pattern | Element: Maintainer: Pattern: Pattern | Pattern maintaining this File |
| Contained Software Instances | File: RelatedFile: ElementUsingFile: ContainedSoftwareInstance | Contained Software Instances using this File |
| Software Containers | File: RelatedFile: ElementUsingFile: SoftwareContainer | Software Containers using this File |
| Software Instances | File: RelatedFile: ElementUsingFile: SoftwareInstance | Software Instances using this File |
Expressions of the File node
The expressions of the File node are described in the following table: {anchor:exprs}
| UI Name | Expression | Description |
|---|---|---|
| Size | size_display : formatQuantity(size, "B1024") | File size |