* Bump container version.
* Use new URLs.
* Add IP certificate tests.
* Disable IPv6 IP from IP certificate.
Background: in CI, the ACME test container apparently has no IPv6 support.
Without IPv6 support, Pebble can't connect to validate, and thus validation
fails.
* postgresql_sequence: initial commit with new module and tests
* change return variables and adjust tests
* fix sanity checks
* fix linter errors
* change formatting functions and put params alphabetically
* add new examples and remove restrict option
* remove restrict option
* remove `required: false`
* add links to documentation
* change some minor parts in documentation
* add new integration tests for
** drop cascade
** change owner
* change usage of owner and created a test case for set owner during creation
* remove some documents and use docsfragments
* add aliases for minvalue and maxvalue
* change to warn if sequence not exists but should be removed
* use connect_to_db from module_utils/postgres.py
* add checkmode for several tests
* fix psycopg2 import and connect_to_db
* add a test for drop nonexistent sequence
* change get_info funcrtion to use only one SQL statement
* rewrite the module for cleaner code
* remove psycopg2
* change check_mode behavior
* add docstrings for class and methods
* add test for create sequence with owner in check_mode
* fix typo in set_schema()
* fix docu and cleanup the code
* adjust documentation for state, schema and newschema
* remove mutually_exclusive for 'absent'
* remove unused code comments
* remove warning for drop non-exicsting sequence
* change autocommit condition
* adjust state documentation
* nxos_interface_ospf: Add bfd support
Add support for `bfd` state in `nxos_interface_ospf`
- Feature Pull Request
`nxos_interface_ospf`
* Fix pep issues
* sanity loop: syntax
* bfd states changed from T/F to enable/disable/default
* doc hdr fixes
The erlang-solutions repository is broken for Ubuntu18 (They did not
sign their repository metadata). For now, disable the rabbitmq tests
which depend upon that. I'll open a PR with a revert of this commit.
We can watch it to see when it passes in Ci to know that the
erlang-soutions repository has been fixed
* Implement a new module to support Batch Account.
* Fix the schema definition.
* Fix some lint errors.
* Normalize line endings.
* Remove not-recommended idempotency check.
* adding stubs for discussion
* Add one more output attribute.
* Leverage `idempotency_check` and `normalize_resource_id`.
* Fix line is too long error.
* normalize resource id implementation
* normalizing resource id fix indentation
* Fix linting issues.
* Fix runtime errors of Azure Python SDK.
* Add info module to Batch Account.
* Remove info module per suggestion.
* adding initial comparison function
* fix in idempotency check
* batch account update to support idempotence
* don't modify azure_rm_common for timebeing to avoid excessive ci
* adding first ci
* added more description on comparison function
* fixed storage account name
* fix
* fixed indent in common function + batch account name unpacking
* fix bug
* fixing sanity
* updated class relations
* fix in common
* updated disposition
* Add two more updatable/disposition in module_arg_spec
* updated common file
* Fix documentation for auto_storage_account.
* fixed line too long
* fixed keyvault reference
* fixed batch account creation
* fix pep8
* Regenerate code according to the feedbacks.
* test deleting batch account
* Add auto-generate comments to test file.
* renamed delete task, removed unstable
* clean up storage account
* nxos_bfd_global: initial commit
This is an initial POC with just a few commands included. The code has been written somewhat generically so that it can act as a best practices template for re-use in future modules. The implementation follows the yaml cmd_ref style to define each command's getter/setter/type/default. It supports platform-specific defaults.
The basic logic is to collect all relevant data in a `cmd_ref` dict and pass that around to various methods.
In the BFD case the devices don't provide JSON output so we have to screen-scrape with show runs.
BFD does not support present/absent states so there is no state param.
BFD has three different property types to handle. We can add add'l types as needed:
- int
- int_list (list of ints)
- str (needs support for 'no' keyword)
* Use get_capabilities to find platform type
* PR comment fixes, round 1
* Minor cleanups
* nxos_bfd_global: create NxosCmdRef in module_utils
This commit just takes the latest bfd global code and moves the bulk
of the code into new `class NxosCmdRef` in `module_utils/nxos/nxos.py`.
The only remaining code in `nxos_bfd_global.py` are the calls from `main()`.
* Add remaining command properties and documentation
* update argument_spec
* Add check for _exclude; add sanity test
* Add targets files for bfd
* Context and state absent updates
* Add dict support to cmd_ref
* Changed remaining list commands to dict usage
* Add idempotence check for dict
* Fix existing overwrite bug
* Move pattern matching logic into its own method
* add support for 'command: absent'
* Add `get_platform_shortname`; update BFD platform-specific settings
* /absent/deleted/
* /sh/show/ in prepare_nxos_tests
* add dict check to get_platform_shortname
* Add normalize_defaults()
* UTs for bfd_global
* support yaml for both py2/py3
* update cmd_ref doc header
* Fix python2.6 incompatibility with dict comprehensions
* Fix bfd_global doc header (yaml syntax fail)
* more shippable fixes
* yet more shippable fixes
* shippable: remove r' ' wrappers
* docfix - remove ':'
* escape regex ctl chars in yaml table
* remove extra blank lines
* Fix str(None) issue
* Command context updates
* import PY2,PY3 instead of import sys
* fix ordereddict import & parent_context
* try/except for yaml import
* fix import issue for ordereddict
* remove epdb
* nxosCmdRef_import_check() workaround for shippable
* fix PEP ws errors
* Fix#56643: Map ansible keys to api keys
* Remove errant print line
* Fix pep8 issue
* Fix doc line
* Added test for validate_certs -> verify_ssl translation for k8s module
The extant documentation says that the fingerprint return value is a
single string, but it is currently being returned as a split list.
Convert the returned value to a string as documented, and add some
basic test-case coverage for the return values.
* Initial commit for meraki_malware module
- Allows for manipulation of malware configuration
* Add full documentation and improve code coverage
* Add diff support
* Type change
* Sanity check fixes
* Convert org_id from str to int for consistency
* Sanity fixes again
* Fix argument type errors
* Remove ignore items for some Meraki modules so shippable is happy
* Restructure meraki_network to be simpler and work for all int tests
* Enable all integration tests and enhance error reports
* Slight tweaks to integration tests
* Add support for check mode.
* Add diff support
- Need to analyze diff for accuracy
- Updated check mode changed value
* Improve test coverage
* Remove a duplicate integration test
* Add support for check mode
* Add changelog fragment
* Add diff support
- Fix a few changed status
- Removed auth_key check since that's done in module_utils now
* win_chocolatey - honour version when bootstrapping chocolatey
* skip upgrade all step
* Fix install latest step
* Remove test changes now that Chocolatey is released
* tweak the package version detection
* Add integration test provider for vmware
This change adds a new remote cloud provider option for vmware,
supporting dynamic environments running on worldstream.nl as well as
static environments specific by the user in a cloud-config template.
* nxos_vlan: fix broken purge behavior (issue #57101)
Symptoms/Analysis:
- `nxos_vlan` `purge: true` would fail when `purge` was trying to delete all unspecified vlans, including vlan 1.
- `nxos` devices do not allow removing vlan 1 and raise a cli exception error
- Previous fix#55144 caused a side effect when `purge` was used: vlan changes specified by `aggregate` were ignored; e.g.
- vlan 4 is not present; playbook specifies `aggregate: { vlan: 4 }, purge: true`
- results in proper purging but vlan 4 is not created
Solutions:
- ignore vlan 1 when purging
- remove the `not purge` check from state present logic
Added additional unit tests and integration tests.
Tested against all regression platforms.
* PEP fixes
* Add agg_show_vlan_brief.txt fixture
* Add warning for removing vlan 1
* change method name check
* Fix order for warning on templated conditionals
Fix bare variable warnings when the variable is a boolean
* changelog
* Add tests for cases that should and should not give warnings
If the behavior may change when the default behavior for CONDITIONAL_BARE_VARS becomes False there should be a warning. Boolean type conditionals will not change in behavior so don't warn.
* oops, forgot to add files
* typo
* New module postgresql_copy
* New module postgresql_copy: added tests
* New module postgresql_copy: changed tests
* New module postgresql_copy: doc format fixes
* New module postgresql_copy: fixes
* New module postgresql_copy: added upper, PostgreSQL
* New module postgresql_copy: fixed description
* New module postgresql_copy: added note about superuser
* New module postgresql_copy: remove SQLParseError
* New module postgresql_copy: fixed opt_need_quotes type
* New module postgresql_copy: fixed check_mode
* New module postgresql_copy: small fix
* Attempt 2 of cert validation fixes
* Remove unused code
* Cleanup the tmp cert using atexit
* Fix linting issues
* Only add SSLValidationHandler when not HAS_SSLCONTEXT
* Catch value errors on non PEM certs
* Only catch NotImplementedError to avoid masking issues
* set self._context even with PyOpenSSLContext for conformity
* Fix error building
* normalize how we interact with the context we create
* Remove unused code
* Address test for py3.7 message difference
* open_url should pass the ca_path through
* Account for new error in url lookup test
* Guard some code behind whether or not we are validating certs
* Make _make_context public
* Move atexit.register up to where the tmp file is created
* Adding integration test for 127.0.0.1/32 and ::1/128.
* Making sure file is not corrupted when render fails
* Fixes#56430
* Adding changelog for MR 57147/Issue 56430
* Add test case for non-cascading deletes
Deleting a DaemonSet does not delete associated pods,
even though it should
* Add coverage module when using pip
Otherwise tests seemingly fail
* Add support for check mode
* Check mode returns proper changed status
- Added is_template_valid()
- Restructured check_mode so it will always return data
- Check mode should show proper changed status
- Code is untested and integration tests need to be expanded
* Fix deleting networks
- Add integration tests for deleting networks
- Refine tests based on changed/unchanged
* Remove one task from integration test
* Add support for disableRemoteStatusPage
- New feature in the Meraki API
- Yes, it's a double negative, I may fix at some point
* Remove double negative
- All disables became enable and logic is reversed
- This isn't yet tested
* Switching computers!!!
* Apply changes to make the logic work, even reversed
* Attempt to fix some formatting errors
* Add documentation fragment
* Fix whitespace
* Add disable_my_meraki back, with deprecation notice
* Edit changelog notice
* Update deprecation version
* Update example to be a block and change deprecation message.
* Remove duplicate delegate_to
* Change deprecation notice.
The jinja2 query() function (or lookup with wantslist=True, which is
the same thing) should always return a list.
However, if you combine a query with errors='ignore' and take the
error path, the current code returns a None value. This is important
in a case such as
- name: Conditional include file
import_tasks: '{{ item }}'
vars:
params:
files:
- path/file1.yaml
- path/file2.yaml
loop: "{{ q('first_found', params, errors='ignore') }}"
If neither file1.yaml or file2.yaml exist, this should do nothing by
returning an empty list to the loop. Currently if you run the above
task you'll get a rather unhelpful:
Invalid data passed to 'loop', it requires a list, got this instead: .
This change ensures that when a query ignores an error, it returns a
empty list. The errors='ignore' case is tested in several variants
with first_found. The extant (but deprecated) "skip: True" for
first_found doesn't seem to be explicitly tested; a test is added here
to avoid regressions before removal in 2.12.
This fixes a regression you'll hit if you follow the suggestion in the
deprecation message included with
e17a2b502d to use errors=ignore over
"skip: True" for first_found. This change adds an example that points
out the query/lookup difference and also fixes the error message to
not mention the now deprecated "skip: True".
Closes#56775
* Rewrite idempotency check
- Check now operates recursively and works on multiple types
- Order of lists matter
* Remove blank line for lint
* Fixed idempotency checks in meraki_ssid
- New sanitize() method for finding keys unique in compared dicts
- Fixed bug in meraki_ssid where SSID specified by number breaks
- This will require a backport
- Converted ignored_keys from tuple to list
* Made changes required for idempotency
* Add changelog fragment
* Add unidirectional option for testing
* Disable option 1 check
* General fixes for is_update_required testing
- Added commented out debug statements in method
- Fixed ignored_keys modifications
* Remove old commented algorithm
ios_user requires escalated privledges, rather then doing this in the
inventory, we can just add it into the playbook tasks.
Also add missing provider settings for authorize.
Signed-off-by: Paul Belanger <pabelanger@redhat.com>
* ios_ntp: Switch interface to GigabitEthernet0/1 for tests
Lets use an interface we know that exists for testing, in some cases
Loopback0 maybe not be configured.
Signed-off-by: Paul Belanger <pabelanger@redhat.com>
* ios_ntp: properly register result variable for testing
This is currently broken, and tests don't work. Fix this by properly
registering the result variable.
Signed-off-by: Paul Belanger <pabelanger@redhat.com>
- In order to keep the integration with `ansible-test`, we prefer to avoid any
interaction with the Ansible inventory file.
- split up the prepare_vmware_tests/defaults/main.yml in two
configuration files: one for vcsim and one for a real environment
- remove all the access to hostvars
- directly interact with the ESXi to mount/umount the datastore
https://github.com/ansible/ansible/pull/56516
- record the virtual machine folder in the environment configuration
- vmware_guest_move: Use https://github.com/ansible/ansible/pull/55237
Until now, the module was only able to interact with vcenter. This
commit adds the ability to directly target an ESXi without the
`esxi_hostname` parameter.
- Also return url and update docs for other values to indicate they are only returned on success.
- Add integration tests
- Use info variable for common return values
- Use -1 as default status rather than None. This is lines up with with existing code in urls.py
- Add unit tests to ensure status and url are returned on failure
* Make datacenter as alias and optional
* Add folder param to place datastore cluster in specific folder
* Updated examples
* Updated tests
Fixes: #48010
Signed-off-by: Abhijeet Kasurde <akasurde@redhat.com>
* Quick and dirty attempt to handle eapi error
* Well this should probably change
* Hopefully this works correctly?
* Fix check_rc handling with httpapi
* Add tests that should hopefully cover the error
* Fix warnings
* Improve tests
* initial commit
* Fix typo in integration test which caused an assertion to fail
* Updated integration testing
* Fix Ansible Sanity Errors
* Changed version added to 2.8 from 2.9
* added from __future__ import absolute_import, division, print_function
__metaclass__ = type
Ensure `wait_condition`s with `Status: Unknown` actually
complete
Return k8s object after wait rather than k8s object before
wait when object is patched.
* [docker] images: add support for lookup by sha256 digest
Signed-off-by: Jakob Ackermann <das7pad@outlook.com>
* [tests] docker image by digest: work on a minimal test case
Signed-off-by: Jakob Ackermann <das7pad@outlook.com>
* [docker] group branch conditions per lookup
Co-Authored-By: Felix Fontein <felix@fontein.de>
* [misc] add a news fragment for the added digest lookup for docker images
Signed-off-by: Jakob Ackermann <das7pad@outlook.com>
* Allow python_requirements_facts to cope with packages with dashes
```
python_requirements_facts:
dependencies:
- kubernetes-validate
```
should work as expected
* Ensure tests run for python_requirements_facts
* azure_rm_azurefirewall
* a few updates
* fixed mistake
* updated docs, fixed syntax
* updated priority
* use checkmode for idempotence test, as it's very long
* fix check mode
* Attempt to handle just mode trunk properly
* Add test for trunk-only config and clean up tests
* Add missing eapi tests and remove references to provider as we do not test local
* Unchanged requests now return the original data
* Add changelog fragment
* Add integration tests for returned data for meraki_network
* Add integration tests for returned data
* Improve idempoetent output
- Make MX l3 rules always show default rule
- Add integration tests
* Add integration tests for returned data on meraki_network
* Improved idempotency in a few modules and improved tests
* Add waiter for AWSRegional
* Add support for WAF Regional
* Add support for regional waf web acl
* Remove set_trace, pep formatting
* Add paginator for regional_waf
* Change name of param for waf_regional
This is more in line with how AWS refers to the service. Additional
changes made to how client is called. Used ternary to reduce if
statements
* Change parameter name to waf_regional
* Add support for removal waf regional condition
* Change parameter from cloudfront to waf_regional
* Added state: absent waf rule
* Remove set_trace
* Add integration tests for waf regional
* WIP: adding region parameter to tests
* Add support for waf facts module
* Add region to waf regional integration tests
* Update security policy for waf regional testing
* Add type to documentation for waf_regional param
* Rewrite much of the execution of meraki_switchport
- Previous versions had problems with idempotency and allowed_vlans
* Modified payload creation
- Parameter map is used
- propsed is created using .copy()
- Much cleaner this way
* Add whitespace for lint
* Add bugfix snippet for changelog
* Adds a new vmware module to support getting the folders and their paths within a datacenter
* Add integration tests
* Bump version added
* Refactor integration test
* Improve grammar in docs
* auth_key parameter is required
- This will have to change when httpapi is implemented
* Add integration test
* Add assertion
* Enable VLANs on network
* Add required for auth_key
It is possible we are using a different username then 'ansible' for
testing junos. By using ansible_user_id, this should be a more dynamic
check.
Signed-off-by: Paul Belanger <pabelanger@redhat.com>
* Fixed error handling in github_issue module
Due to recent changes in github3.py library module stopped working.
This fix adds extra error handling for new changes in library.
Fixes: #39627
Signed-off-by: Abhijeet Kasurde <akasurde@redhat.com>
* Check version
Signed-off-by: Abhijeet Kasurde <akasurde@redhat.com>
* Refactor github_issue
Signed-off-by: Abhijeet Kasurde <akasurde@redhat.com>
* Change S3 bucket urls to new method as per #56124
* duplicate / and dded changelog fragment
* Revert "duplicate / and dded changelog fragment"
This reverts commit b89d5cbe6d.
* duplicate /
* Rewrite vmware_portgroup module
* support check mode
* VLAN ID isn't required anymore
* VLAN ID 0 (no tagging) is the default
* Options match values in vSphere Client and vmware_vswitch module
* Policy override is configured properly
* VMware: vmware_portgroup updates
Ensure the module still work with the ESXi where CustomFieldsManager
does not exist.
From: https://www.vmware.com/support/developer/converter-sdk/conv60_apireference/vim.CustomFieldsManager.html
The CustomFieldsManager object is used to add and remove custom fields to
managed entities.
The custom fields values set on managed entities are available through the
customValue property and through the summary objects for VirtualMachine
and HostSystem. They are not available directly through this managed object.
This functionality is only available through VirtualCenter.
Fixes: #56071
The use of the `hostvars[esxi1].ansible_host` was attempt to use
different hostname and IP address. But it's actually the source of
more problems.
VMware expects to be able to resolvable the host name. This means, that
if someone wants to run the test-suite, s/he needs to use a DNS or
update the `/etc/hosts` files on the different hosts.
* nxos_switchport: remove deprecated test target files
* Remove tests for nxos_ip_interface, nxos_portchannel; update nxos_interface
- `nxos_ip_interface` and `nxos_portchannnel` tests have been removed
- `nxos_interface` now uses current module `nxos_l3_interface` instead of `nxos_ip_interface`
* nxos_vpc:Fix idempotency issues with multiple attributes
Several attributes were causing idempotency problems on various platforms:
- `auto_recovery`
- This command can be disabled on certain platforms and will nvgen as `no auto-recovery`
- When enabled it has an additional optional-keyword for changing the `reload-delay` timer value
- This was addressed by adding a new attribute `auto_recovery_reload_delay` to handle setting the timer value
- This new attribute is mutually exclusive with `auto_recovery`
- `/show run vpc/show run vpc all/`
- Changed the command that gets state to `all` so that it could differentiate between `auto-recovery` and `auto-recovery reload-delay`
- This change resulted in also changing some attribute handling withing `get_vpc`, since some attributes like `peer_gw` relied on presence of the config to determine state true or false. With `all` the config is always there so these attrs must specifically check for `'no '` in the string.
- `delay_restore`
- This command has two additional, optional keywords that exist on some platforms and not others.
- New attrs:
- `delay_restore_interface_vlan`
- `delay_restore_orphan_port`
- Modified the `sanity` test to include the new attributes and to fix the platform issues.
- Bugfix Pull Request
`modules/network/nxos/nxos_vpc.py`
- Validated `nxos_vpc` `sanity` test on these platforms, all are now 100% Pass: N35, N3K, N3K-F, N6K, N7K, N9K, N9K-F
- TBD: Future work is needed to add support for `peer_gw_exclude_gw` timers. This could be addressed in the same way as the `auto_recovery_reload_delay` changes included here.
* lint fix
* Add 'version_added' tags for new options
* nxos_snmp_user: platform fixes for get_snmp_user
snmp user output behavior varies quite a bit for the different nxos platforms and required several workarounds:
- N5K/N6k
- These platforms do not support structured output for `show snmp user`.
- The current code lands in an `except` clause when the output is not structured; so I added a new `get_non_structured_snmp_user` method to scrape the state from the regular cli output if it's present.
- N9K-F
- The `group` data in the JSON output is different for this platform; it has a different key (just `group` instead of `TABLE_groups` or `group_names`) and it is not indexed
- For a single group the value is a string, for multiple groups it's a list
- sanity
- N5K/N6K/N9K-F platforms will reject `no snmp user <name> <role>` when it's the last role defined for the user.
- workaround is to use `nxos_user` to remove the user
- Changes validated on:
- `N3K, N3K-F, N35, N6K, N7K, N9K, N9K-F`
- `6.0(2)A8`
- `7.0(3)I2, 7.0(3)I4, 7.0(3)I5, 7.0(3)I6, 7.0(3)I7`
- `7.3(2)D1`
- `7.3(3)N1, 7.3(4)N1`
- `8.3(2)`
- `9.2(2), 9.2(3)`
* fix lint warning
* Same api client can be used for other service as well
* Incorporated Review comments. Modified Category and Guest Fact modules which are also dependent on vmware_rest_client module util
* Adding Integration Tests for vmware_rest_client changes
* Changes to incroporate changes in vcsim testware
* Change to get vm name to attach the tag
* Alter tests to pass
* Change diff_against to make changed work again
* Add another diff_against
* Expose supports_sessions across all EOS connection types
* Change session warning to failure
* supports_sessions needs to be a method to survive the rpc boundary
* Alter tests to match
It is possible the EOS appliance doesn't have an IP address on the
management1 interface, instead just check we have found that interface.
Signed-off-by: Paul Belanger <pabelanger@redhat.com>
* sysctl will now return an error if the value is invalid
sysctl can fail to set a value even if it returns an exit status 0. More
details: https://bugzilla.redhat.com/show_bug.cgi?id=1264080. Because of
this in case of an invalid value or a read-only file system, sysctl
module would return OK, even though it didn't set anything. To be sure
that sysctl correctly applied the changes we also need to check the
output of stderr.
* Run sysctl with LANG=C
Because we are parsing sysctl stderr we need to make sure that errors
are persistent across different system language settings.
* Add changelog fragment for sysctl
- Created `sanity.yaml` to contain all of the tests previously kept in separate files
- Removed `cli` and `nxapi` test directories
- Tested on current supported platforms and versions: `N3K,N6K,N7K,N9K,N3K-F,N9K-F`
* remove deprecated get_md5 from stat
fixes#55309
* removed get_md5 from tests involving stat
* keep get_md5 but hide it
* rst it
* ammended comment
* ws
* added ignore for hidden md5
* Make ansible adhoc work with include_role
Fix logic condition so that include_role works
without
```
ERROR! 'async_val' is not a valid attribute for a IncludeRole
The error appears to be in 'None': line 0, column 0, but may
be elsewhere in the file depending on the exact syntax problem.
(could not open file to display line)
```
* Add include_role test for adhoc
* nxos_snmp_traps: fix 'group: all' for N35 platforms
- `group: all` attempts to enable traps for all features defined in the module's `feature_list`
- `N35` platforms do not support `snmp-server enable traps bfd`; so removing `bfd` from the `feature_list` for that platform
- Minor cleanup in `sanity.yaml` test file
* whitespace lint fix
* Fixes Netconf_config single parameter bug
Fixes 56022
fixed get_config to not require multiple parameters to just run a backup
* Add Integration test for netconf_config
Associated with #56022
tests backup through netconf only using one parameter.
* Added debug to the begin and end of file
* Fix formatting of save config. #56022
* removed blank line at end: #56022
* add vmware_evc_mode module
* alter result message for absent/absent
* Apply suggestions from code review
Co-Authored-By: CastawayEGR <36353334+CastawayEGR@users.noreply.github.com>
* add idempotency test
* change result dict to evc_mode_msg
* refactor to use pyvmomi class
* fix update to only process task on update
* minimize update code
* add single quotes around vars to match other code
* pass datacenter to cluster find
* add check_mode to disable test
This gives us a little more structure to our console logs, which make it
easier for machines / humans to parse. It will be helpful once the
ansible network team starts importing this data into elastic-recheck.
Signed-off-by: Paul Belanger <pabelanger@redhat.com>
This has been broken for some time, but only noticed recently. Because
vyos_command isn't supported on ansible_connection=local, update our
testing to account for that.
Signed-off-by: Paul Belanger <pabelanger@redhat.com>
Felix Fontein