Steven Haryanto

NAME

Setup::File - Setup file (existence, mode, permission, content)

VERSION

version 0.17

FAQ

Why not allowing coderef in 'check_content_func' and 'gen_content_func' argument?

Because transactional function needs to store its argument in database (currently in JSON), coderefs are not representable in JSON.

SEE ALSO

Setup

Setup::File::Dir

Setup::File::Symlink

DESCRIPTION

This module has Rinci metadata.

FUNCTIONS

None are exported by default, but they are exportable.

chmod(%args) -> [status, msg, result, meta]

Set file's permission mode.

Fixed state: path exists and mode is already correct.

Fixable state: path exists but mode is not correct.

Unfixable state: path doesn't exist.

This function is idempotent (repeated invocations with same arguments has the same effect as single invocation).

Arguments ('*' denotes required arguments):

  • follow_symlink => bool (default: 0)

    Whether to follow symlink.

  • mode* => str

    Permission mode, either numeric or symbolic (e.g. a+w).

  • orig_mode => int

    If set, confirm if current mode is not the same as this.

  • path* => str

    Path to file/directory.

Special arguments:

Return value:

Returns an enveloped result (an array). First element (status) is an integer containing HTTP status code (200 means OK, 4xx caller error, 5xx function error). Second element (msg) is a string containing error message, or 'OK' if status is 200. Third element (result) is optional, the actual result. Fourth element (meta) is called result metadata and is optional, a hash that contains extra information.

chown(%args) -> [status, msg, result, meta]

Set file's ownership.

Fixed state: path exists and ownership is already correct.

Fixable state: path exists but ownership is not correct.

Unfixable state: path doesn't exist.

This function is idempotent (repeated invocations with same arguments has the same effect as single invocation).

Arguments ('*' denotes required arguments):

  • follow_symlink => bool (default: 0)

    Whether to follow symlink.

  • group => str

    Numeric GID or group.

  • orig_group => str

    If set, confirm if current group is not the same as this.

  • orig_owner => str

    If set, confirm if current owner is not the same as this.

  • owner => str

    Numeric UID or username.

  • path* => str

    Path to file/directory.

Special arguments:

Return value:

Returns an enveloped result (an array). First element (status) is an integer containing HTTP status code (200 means OK, 4xx caller error, 5xx function error). Second element (msg) is a string containing error message, or 'OK' if status is 200. Third element (result) is optional, the actual result. Fourth element (meta) is called result metadata and is optional, a hash that contains extra information.

mkdir(%args) -> [status, msg, result, meta]

Create directory.

Fixed state: path exists and is a directory.

Fixable state: path doesn't exist.

Unfixable state: path exists and is not a directory.

This function is idempotent (repeated invocations with same arguments has the same effect as single invocation).

Arguments ('*' denotes required arguments):

  • allow_symlink => str

    Whether to regard symlink to a directory as directory.

  • path* => str

    Path to directory.

Special arguments:

Return value:

Returns an enveloped result (an array). First element (status) is an integer containing HTTP status code (200 means OK, 4xx caller error, 5xx function error). Second element (msg) is a string containing error message, or 'OK' if status is 200. Third element (result) is optional, the actual result. Fourth element (meta) is called result metadata and is optional, a hash that contains extra information.

mkfile(%args) -> [status, msg, result, meta]

Create file (and/or set content).

Fixed state: path exists, is a file, and content is correct.

Fixable state: path doesn't exist. Or path exists, is a file, and content is incorrect. Or orig_path specified and exists.

Unfixable state: path exists and is not a file.

This function is idempotent (repeated invocations with same arguments has the same effect as single invocation).

Arguments ('*' denotes required arguments):

  • allow_symlink => str

    Whether to regard symlink to a file as file.

  • check_content_func => str

    Name of function to check content.

    If unset, file will not be checked for its content. If set, function will be called whenever file content needs to be checked. Function will be passed the reference to file content and should return a boolean value indicating whether content is acceptable. If it returns a false value, content is deemed unacceptable and needs to be fixed.

    Alternatively you can use the simpler content or content_md5 argument.

  • content => str

    Desired file content.

    Alternatively you can also use content_md5, or gen_content_func and check_content_func.

  • content_md5 => str

    Check content against MD5 hash.

    MD5 hash should be expressed in hex (e.g. bed6626e019e5870ef01736b3553e570).

    Used when checking content of existing file.

    Alternatively you can also use content, or check_content_func.

  • gen_content_func => str

    Name of function to generate content.

    If set, whenever a new file content is needed (e.g. when file is created or file content reset), this function will be called to provide it. If unset, empty string will be used instead.

    Function will be passed the reference to the current content (or undef) and should return the new content.

    Alternatively you can use the simpler content argument.

  • path* => str

    Path to file.

  • suffix => str

Special arguments:

Return value:

Returns an enveloped result (an array). First element (status) is an integer containing HTTP status code (200 means OK, 4xx caller error, 5xx function error). Second element (msg) is a string containing error message, or 'OK' if status is 200. Third element (result) is optional, the actual result. Fourth element (meta) is called result metadata and is optional, a hash that contains extra information.

rmdir(%args) -> [status, msg, result, meta]

Delete directory.

Fixed state: path doesn't exist.

Fixable state: path exists and is a directory (or, a symlink to a directory, if allow_symlink option is enabled).

Unfixable state: path exists but is not a directory.

This function is idempotent (repeated invocations with same arguments has the same effect as single invocation).

Arguments ('*' denotes required arguments):

  • allow_symlink => bool (default: 0)

    Whether to regard symlink to a directory as directory.

  • delete_nonempty_dir => bool

    Whether to delete non-empty directory.

    If set to true, will delete non-empty directory.

    If set to false, will never delete non-empty directory.

    If unset (default), will ask for confirmation first by returning status 331. Caller can confirm by passing special argument -confirm.

  • path* => str

Special arguments:

Return value:

Returns an enveloped result (an array). First element (status) is an integer containing HTTP status code (200 means OK, 4xx caller error, 5xx function error). Second element (msg) is a string containing error message, or 'OK' if status is 200. Third element (result) is optional, the actual result. Fourth element (meta) is called result metadata and is optional, a hash that contains extra information.

rmfile(%args) -> [status, msg, result, meta]

Delete file.

Fixed state: path doesn't exist.

Fixable state: path exists and is a file (or, a symlink to a file, if allow_symlink option is enabled).

Unfixable state: path exists but is not a file.

This function is idempotent (repeated invocations with same arguments has the same effect as single invocation).

Arguments ('*' denotes required arguments):

  • allow_symlink => bool (default: 0)

    Whether to regard symlink to a file as file.

  • orig_content => str

    If set, confirm if current content is not the same as this.

    Alternatively, you can use orig_content_hash.

  • orig_content_md5 => str

    If set, confirm if current content MD5 hash is not the same as this.

    MD5 hash should be expressed in hex (e.g. bed6626e019e5870ef01736b3553e570).

    Alternatively, you can use orig_content (for shorter content).

  • path* => str

  • suffix => str

    Use this suffix when trashing.

Special arguments:

Return value:

Returns an enveloped result (an array). First element (status) is an integer containing HTTP status code (200 means OK, 4xx caller error, 5xx function error). Second element (msg) is a string containing error message, or 'OK' if status is 200. Third element (result) is optional, the actual result. Fourth element (meta) is called result metadata and is optional, a hash that contains extra information.

setup_dir(%args) -> [status, msg, result, meta]

Setup directory (existence, mode, permission).

On do, will create directory (if it doesn't already exist) and fix its mode/permission.

On undo, will restore old mode/permission (and delete directory if it is empty and was created by this function). If directory was created by this function but is not empty, will return status 331 to ask for confirmation (-confirm). If confirmation is set to true, will delete non-empty directory.

Will not create intermediate directories like "mkdir -p". Create intermediate directories using several setup_dir() invocation.

This function is idempotent (repeated invocations with same arguments has the same effect as single invocation).

Arguments ('*' denotes required arguments):

  • allow_symlink => bool (default: 1)

    Whether symlink is allowed.

    If existing dir is a symlink then if allowsymlink is false then it is an unacceptable condition (the symlink will be replaced if replacesymlink is true).

    Note: if you want to setup symlink instead, use Setup::Symlink.

  • group => str

    Expected group.

  • mode => str

    Expected permission mode.

  • owner => str

    Expected owner.

  • path* => str

    Path to file.

  • replace_dir => bool (default: 1)

    Replace existing dir if it needs to be replaced.

  • replace_file => bool (default: 1)

    Replace existing file if it needs to be replaced.

  • replace_symlink => bool (default: 1)

    Replace existing symlink if it needs to be replaced.

  • should_exist => bool

    Whether dir should exist.

    If undef, dir need not exist. If set to 0, dir must not exist and will be deleted if it does. If set to 1, dir must exist and will be created if it doesn't.

Special arguments:

Return value:

Returns an enveloped result (an array). First element (status) is an integer containing HTTP status code (200 means OK, 4xx caller error, 5xx function error). Second element (msg) is a string containing error message, or 'OK' if status is 200. Third element (result) is optional, the actual result. Fourth element (meta) is called result metadata and is optional, a hash that contains extra information.

setup_file(%args) -> [status, msg, result, meta]

Setup file (existence, mode, permission, content).

On do, will create file (if it doesn't already exist) and correct mode/permission as well as content.

On undo, will restore old mode/permission/content, or delete the file again if it was created by this function and its content hasn't changed since (if content/ownership/mode has changed, function will request confirmation).

This function is idempotent (repeated invocations with same arguments has the same effect as single invocation).

Arguments ('*' denotes required arguments):

  • allow_symlink => bool (default: 1)

    Whether symlink is allowed.

    If existing file is a symlink to a file then if allowsymlink is false then it is an unacceptable condition (the symlink will be replaced if replacesymlink is true).

    Note: if you want to setup symlink instead, use Setup::Symlink.

  • check_content_func => str

    Name of function to check content.

    If unset, file will not be checked for its content. If set, function will be called whenever file content needs to be checked. Function will be passed the reference to file content and should return a boolean value indicating whether content is acceptable. If it returns a false value, content is deemed unacceptable and needs to be fixed.

    Alternatively you can use the simpler content argument.

  • content => str

    Desired file content.

    Alternatively you can also use content_md5, or check_content_func and gen_content_func.

  • gen_content_func => str

    Name of function to generate content.

    If set, whenever a new file content is needed (e.g. when file is created or file content reset), this function will be called to provide it. If unset, empty string will be used instead.

    Function will be passed the reference to the current content (or undef) and should return the new content.

    Alternatively you can use the simpler content argument.

  • group => str

    Expected group (either numeric or group name).

  • mode => str

    Expected permission mode.

    Mode is as supported by File::chmod. Either an octal string (e.g. '0755') or a symbolic mode (e.g. 'u+rw').

  • owner => str

    Expected owner (either numeric or username).

  • path* => str

    Path to file.

  • replace_dir => bool (default: 1)

    Replace existing dir if it needs to be replaced.

  • replace_file => bool (default: 1)

    Replace existing file if it needs to be replaced.

  • replace_symlink => bool (default: 1)

    Replace existing symlink if it needs to be replaced.

  • should_exist => bool

    Whether file should exist.

    If undef, file need not exist. If set to 0, file must not exist and will be deleted if it does. If set to 1, file must exist and will be created if it doesn't.

Special arguments:

Return value:

Returns an enveloped result (an array). First element (status) is an integer containing HTTP status code (200 means OK, 4xx caller error, 5xx function error). Second element (msg) is a string containing error message, or 'OK' if status is 200. Third element (result) is optional, the actual result. Fourth element (meta) is called result metadata and is optional, a hash that contains extra information.

AUTHOR

Steven Haryanto <stevenharyanto@gmail.com>

COPYRIGHT AND LICENSE

This software is copyright (c) 2012 by Steven Haryanto.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.




Hosting generously
sponsored by Bytemark