Commit Graph

93 Commits

Author SHA1 Message Date
Alexander Weaver
a00879ae21
Alerting: Refactor store to not export its own interface for InstanceStore, delete dead dependency injection (#55772)
* Add consumer-side store interface to state manager

* Remove dead dependency

* Delete dead dependency in API struct

* Delete store-layer InstanceStore interface

* Move fake for state's InstanceStore interface to state package
2022-09-26 13:55:05 -05:00
George Robinson
bad4f7fec5
Alerting: Change screenshots to use components (#55156)
* Alerting: Change screenshots to use components

This commit changes screenshots to use a number of components instead of a set of functional wrappers.

It moves the uploading of screenshots from the screenshot package to the image package so we can re-use the same code for both uploading screenshots and server-side images; SingleFlight from the screenshot package to the image package so we can use it for both taking and uploading the screenshot, where as before it was used just for taking the screenshot; and it also removes the use of a cache because we know that screenshots can be taken at most once per tick of the scheduler.
2022-09-21 10:25:07 +01:00
Sofia Papagiannaki
754eea20b3
Chore: SQL store split for annotations (#55089)
* Chore: SQL store split for annotations

* Apply suggestion from code review
2022-09-19 10:54:37 +03:00
Marcus Efraimsson
87afd9cadc
Plugins: Remove various custom headers logic (#54146)
Removes various custom headers logic sprinkled around in the backend. 
It should automatically be applied to outgoing HTTP requests via the 
CustomHeadersMiddleware.
This also removes decryption of SecureJSONData to populate custom 
headers in ngalert which seemed to have caused a ton of CPU usage.
2022-08-26 11:56:10 +02:00
Karl Persson
5a1b9d2283
RBAC: Remove DeclareFixedRoles wrapper on Access control and inject service (#54153)
* RBAC: Remove DeclareFixedRoles wrapper on Access control and inject service when needed
2022-08-26 09:59:34 +02:00
Yuriy Tseretyan
5fb778814c
Alerting: Update rules version when folder title is updated (#53013)
* remove support for bus from scheduler
* rename event to FolderTitleUpdated and fire only if title has changed
* add method to increase version of all rules that belong to a folder
* update ngalert service to subscribe to folder title change event call data store and update scheduler
* add tests
2022-08-01 19:28:38 -04:00
Jean-Philippe Quéméner
50ae42130b
Alerting: take datasources as external alertmanagers into consideration (#52534) 2022-07-20 16:50:49 +02:00
Yuriy Tseretyan
6e1e4a4215
Alerting: Update DbStore to use disabled orgs from the config (#52156)
* update DbStore to use UnifiedAlerting settings
* remove disabled orgs from scheduler and use config in db store instead
* remove test
2022-07-15 14:13:30 -04:00
idafurjes
17ec9cac83
Add delete user from other services/stores (#51912)
* Remove user from preferences, stars, orguser, team member

* Fix lint

* Add Delete user from org and dashboard acl

* Delete user from user auth

* Add DeleteUser to quota

* Add test files and adjust user auth store

* Rename package in wire for user auth

* Import Quota Service interface in other services

* do the same in tests

* fix lint tests

* Fix tests

* Add some tests

* Rename InsertUser and DeleteUser to InsertOrgUser and DeleteOrgUser

* Rename DeleteUser to DeleteByUser in quota

* changing a method name in few additional places

* Fix in other places

* Fix lint

* Fix tests

* Rename DeleteOrgUser to DeleteUserFromAll

* Update pkg/services/org/orgimpl/org_test.go

Co-authored-by: Emil Tullstedt <emil.tullstedt@grafana.com>

* Update pkg/services/preference/prefimpl/inmemory_test.go

Co-authored-by: Emil Tullstedt <emil.tullstedt@grafana.com>

* Rename Acl to ACL

* Fix wire after merge with main

* Move test to uni test

Co-authored-by: Emil Tullstedt <emil.tullstedt@grafana.com>
2022-07-15 18:06:44 +02:00
Alexander Weaver
2d7389c34d
Alerting: Provisioning API respects global rule quota (#52180)
* Inject interface for quota service and create mock

* Check quota and return 403 if limit exceeded

* Implement tests for quota being exceeded
2022-07-13 17:36:17 -05:00
Yuriy Tseretyan
429ed4b4ee
remove unused orgStore from scheduler (#52157) 2022-07-13 10:34:35 -04:00
Yuriy Tseretyan
a6b1090879
Alerting: refactor scheduler and separate notification logic (#48144)
* Introduce AlertsRouter in the sender package, and move all fields and methods related to notifications out of the scheduler to this router.
* Introduce a new interface AlertsSender in the schedule package and replace calls of anonymous function `notify` inside the ruleRoutine to calling methods of that interface.
* Rename interface Scheduler in api package to ExternalAlertmanagerProvider, and replace scheduler with AlertRouter as struct that implements the interface.
2022-07-12 15:13:04 -04:00
Matthew Jacobson
28dd413c1d
Alerting: Add config disabled_labels to disable reserved labels (#51832)
* Alerting: Add config disabled_labels to disable reserved labels

[unified_alerting.reserved_labels]
disabled_labels

* Replace IsGrafanaFolderDisabled with more generic IsReservedLabelDisabled

* Simplify SchedulerCfg by including UnifiedAlertingSettings
2022-07-11 12:41:40 -04:00
Alexander Weaver
fce283d73e
Alerting: Add method to reset notification policy tree back to the default (#51934)
* Define route and run codegen

* Wire up HTTP layer

* Update API layer and test fakes

* Implement reset of policy tree

* Implement service layer test and authorization bindings

* API layer testing

* Be more specific when injecting settings
2022-07-08 16:23:18 -05:00
Yuriy Tseretyan
94e709fdcb
Alerting: Simplify eval.Evaluator interface (#51463)
* remove ExpressionService from argument list of Evaluator's methods
2022-06-27 17:40:44 -04:00
Yuriy Tseretyan
4b42cd3c1d
Alerting: State manager to use clock (#51219)
* manager to use clock, to be able to mock real time
2022-06-22 12:18:42 -04:00
Yuriy Tseretyan
157c12211d
Alerting: State manager to use tick time to determine stale states (#50991)
* use correct stale timestamp
* calculate stale using tick time instead of time.now

* remove unused dependency on sql store
2022-06-22 00:16:53 +02:00
Matthew Jacobson
5dee2ed24c
Alerting: Add first Grafana reserved label grafana_folder (#50262)
* Alerting: Add first Grafana reserved label g_label

g_label holds the title of the folder container the alert. The intention of this label
is to use it as part of the new default notification policy groupBy.

* Add nil check on updateRule labels map

* Disable gocyclo lint on schedule.ruleRoutine

will remove later in a separate refactoring PR to reduce complexity.

* Address doc suggestions

* Update g_folder for rules in folder when folder title changes

* Remove global bus in FolderService

* Modify tests to fit new common g_folder label

* Add changelog entry

* Fix merge conflicts

* Switch GrafanaReservedLabelPrefix from `g_` to `grafana_`
2022-06-17 13:10:49 -04:00
Jean-Philippe Quéméner
cf684ed38f
Alerting: bump rule version when updating rule group interval (#50295)
* Alerting: move group update to alert rule service

* rename validateAlertRuleInterval to validateRuleGroupInterval

* init baseinterval correctly

* add seconds suffix

* extract validation function for reusability

* add context to err message
2022-06-09 09:28:32 +02:00
gotjosh
0cde283505
Alerting: Logs should not be capitalized and the errors key should be "err" (#50333)
* Alerting: decapitalize log lines and use "err" as the key for errors

Found using (logger|log).(Warn|Debug|Info|Error)\([A-Z] and (logger|log).(Warn|Debug|Info|Error)\(.+"error"
2022-06-07 19:54:23 +02:00
Jean-Philippe Quéméner
81d360529b
Alerting: Provisioning API - Alert rules (#47930) 2022-06-02 14:48:53 +02:00
Kristin Laemmert
debbb8d59d
sqlstore: finish removing Find and SearchDashboards (#49347)
* chore: replace artisnal FakeDashboardService with generated mock

Maintaining a handcrafted FakeDashboardService is not sustainable now that we are in the process of moving the dashboard-related functions out of sqlstore.

* sqlstore: finish removing Find and SearchDashboards

Find and SearchDashboards were previously copied into the dashboard service. This commit completes that work, removing Find and SearchDashboards from the sqlstore and updating callers to use the dashboard service.

* dashboards: remove SearchDashboards from Store interface

SearchDashboards is a wrapper around FindDashboard that transforms the results, so it's been moved out of the Store entirely and the functionality moved into the Dashboard Service's search implementation.

The database tests depended heavily on the transformation, so I added testSearchDashboards, a copy of search dashboards, instead of (heavily) refactoring all the tests.
2022-05-24 09:24:55 -04:00
Joe Blubaugh
687e79538b
Alerting: Add a general screenshot service and alerting-specific image service. (#49293)
This commit adds a pkg/services/screenshot package for taking and uploading screenshots of Grafana dashboards. It supports taking screenshots of both dashboards and individual panels within a dashboard, using the rendering service.

The screenshot package has the following services, most of which can be composed:

BrowserScreenshotService (Takes screenshots with headless Chrome)
CachableScreenshotService (Caches screenshots taken with another service such as BrowserScreenshotService)
NoopScreenshotService (A no-op screenshot service for tests)
SingleFlightScreenshotService (Prevents duplicate screenshots when taking screenshots of the same dashboard or panel in parallel)
ScreenshotUnavailableService (A screenshot service that returns ErrScreenshotsUnavailable)
UploadingScreenshotService (A screenshot service that uploads taken screenshots)

The screenshot package does not support wire dependency injection yet. ngalert constructs its own version of the service. See https://github.com/grafana/grafana/issues/49296

This PR also adds an ImageScreenshotService to ngAlert. This is used to take screenshots with a screenshotservice and then store their location reference for use by alert instances and notifiers.
2022-05-22 22:33:49 +08:00
Gilles De Mey
1d18b5ccd3
Alerting: inject dashboardService in to AlertNG (#49139) 2022-05-18 11:04:17 +02:00
Kristin Laemmert
1df340ff28
backend/services: Move GetDashboard from sqlstore to dashboard service (#48971)
* rename folder to match package name
* backend/sqlstore: move GetDashboard into DashboardService

This is a stepping-stone commit which copies the GetDashboard function - which lets us remove the sqlstore from the interfaces in dashboards - without changing any other callers.
* checkpoint: moving GetDashboard calls into dashboard service
* finish refactoring api tests for dashboardService.GetDashboard
2022-05-17 14:52:22 -04:00
Alexander Weaver
9af30f6570
Alerting: Provisioning GET routes for mute timings (#49044)
* Define GET routes and run codegen

* Wire up forked and non-generated API

* Implement and wire

* Tests, authorization

* Fix linter error
2022-05-17 13:42:48 -05:00
Jean-Philippe Quéméner
9e21e4d1c1
Alerting: indicate whether an alertrule is provisioned (#48458) 2022-04-28 21:27:34 +02:00
Alexander Weaver
735822e48a
Alerting: Add provisioning GET routes for message templates (#48367)
* Template service

* Add GET routes and implement them

* Generate mock for persist layer

* Unit tests for reading templates

* Set up composition root and get integration tests working

* Fix prealloc issue

* Extract setup boilerplate

* Update AuthorizationTest

* Rebase and resolve

* Fix linter error
2022-04-28 13:51:57 -05:00
Alexander Weaver
8310789ef1
Indicate whether routes are provisioned when GETting Alertmanager configuration (#47857)
* Test composition simplification from last PR

* Policies use proper API model everywhere

* Expose policy provenance in API, miss some dep injection

* Complete injection

* fix args

* Tests for provenance value

* Extract test helpers so tests are very readable

* Single source adapter struct that was copied in 3 places

* Drop redundant test

* Resolve merge conflicts on changelog
2022-04-22 11:57:56 -05:00
Alexander Weaver
758364e78b
Alerting: Refactor GET/POST alerting config routes to be more extensible (#47229)
* Refactor GET am config to be extensible

* Extract post config route

* Fix tests

* Remove temporary duplication

* Fix broken test due to layer shift

* Fix duplicated error message

* Properly return 400 on config rejection

* Revert weird half method extraction

* Move things to notifier package and avoid redundant interface

* Simplify documentation

* Split encryption service and depend on minimal abstractions

* Properly initialize things all the way up to the composition root

* Encryption -> Crypto

* Address misc feedback

* Missing docstring

* Few more simple polish improvements

* Unify on MultiOrgAlertmanager. Discover bug in existing test

* Fix rebase conflicts

* Misc feedback, renames, docs

* Access crypto hanging off MultiOrgAlertmanager rather than having a separate API to initialize
2022-04-14 13:06:21 -05:00
Jean-Philippe Quéméner
388ecb4037
Alerting: Provisioning API - Contact points (#47197) 2022-04-13 22:15:55 +02:00
Alexander Weaver
dde0b93cf1
Alerting: Provisioning API - Notification Policies (#46755)
* Base-line API for provisioning notification policies

* Wire API up, some simple tests

* Return provenance status through API

* Fix missing call

* Transactions

* Clarity in package dependencies

* Unify receivers in definitions

* Fix issue introduced by receiver change

* Drop unused internal test implementation

* FGAC hooks for provisioning routes

* Polish, swap names

* Asserting on number of exposed routes

* Don't bubble up updated object

* Integrate with new concurrency token feature in store

* Back out duplicated changes

* Remove redundant tests

* Regenerate and create unit tests for API layer

* Integration tests for auth

* Address linter errors

* Put route behind toggle

* Use alternative store API and fix feature toggle in tests

* Fixes, polish

* Fix whitespace

* Re-kick drone

* Rename services to provisioning
2022-04-05 16:48:51 -05:00
Yuriy Tseretyan
51114527dc
Alerting: handle folder permissions when fine-grained access enabled (#47035)
* Use alert:create action for folder search with edit permissions. This matches the action that is used to query dashboards (the update will be addressed later)
* Update rule store to use FindDashboards instead of folder service to list folders the user has access to view alerts. Folder service does not support query type and additional filters. 
* Do not check whether the user can save to folder if FGAC is enabled because it is checked on API level.
2022-04-01 19:33:26 -04:00
Yuriy Tseretyan
c42d2e6f5d
Alerting: Add support for fine-grained access to alerting APIs (#46561) 2022-03-16 09:36:58 -04:00
Yuriy Tseretyan
468def0c00
Alerting: fixed roles for fine-grained access control (#46553)
* move alerting actions to accesscontrol to avoid cycledeps
* define new actions and fixed roles for alerting
* add folder permission to alert reader role
2022-03-15 14:30:32 -04:00
Alexander Weaver
92716cb602
Alerting: Create abstraction for launching transactions and refactor existing transaction management to use it (#46216)
* Remove InTransaction from RuleStore and make it its own interface

* Ensure that ctx-based is clear from name

* Resolve merge conflicts

* Refactor tests to work in terms of the introduced abstraction rather than concrete dbstore
2022-03-15 11:48:42 -05:00
Yuriy Tseretyan
f7894db99c
Alerting: declare authorization actions, scopes and roles for fine-grained access (#45748)
* add actions, roles and route mapping for rule permission
* add instance\notification actions
* do not declare alerting roles if no feature flag is set (temporary)
2022-03-08 09:22:16 -05:00
Yuriy Tseretyan
e44ea3d589
Alerting: Rename setting AlertForDuration to DefaultRuleEvaluationInterval (#45569)
* fix AlertForDuration to DefaultRuleEvaluationInterval

Co-authored-by: Alexander Weaver <weaver.alex.d@gmail.com>
2022-02-18 10:05:06 -05:00
Selene
d5b98772ed
Dashboards: Refactor service to make it injectable by wire (#44588)
* Add providers to folder and dashboard services

* Refactor folder and dashboard services

* Move store implementation to its own file due wire cannot allow us to cast to SQLStore

* Add store in some places and more missing dependencies

* Bad merge fix

* Remove old functions from tests and few fixes

* Fix provisioning

* Remove store from http server and some test fixes

* Test fixes

* Fix dashboard and folder tests

* Fix library tests

* Fix provisioning tests

* Fix plugins manager tests

* Fix alert and org users tests

* Refactor service package and more test fixes

* Fix dashboard_test tets

* Fix api tests

* Some lint fixes

* Fix lint

* More lint :/

* Move dashboard integration tests to dashboards service and fix dependencies

* Lint + tests

* More integration tests fixes

* Lint

* Lint again

* Fix tests again and again anda again

* Update searchstore_test

* Fix goimports

* More go imports

* More imports fixes

* Fix lint

* Move UnprovisionDashboard function into dashboard service and remove bus

* Use search service instead of bus

* Fix test

* Fix go imports

* Use nil in tests
2022-02-16 14:15:44 +01:00
Yuriy Tseretyan
095ea44e97
Alerting: Move BaseInterval and MinInterval to UnifiedAlerting config (#45107)
* use base interval if legacy value is less than the base interval
2022-02-11 16:13:49 -05:00
George Robinson
a9399ab3cd
Alerting: Add context.Context to RuleStore (#45004)
Alerting: Add context.Context to RuleStore
2022-02-08 08:52:03 +00:00
idafurjes
7a23700e1a
Remove unused GetDashboard method (#44890)
* Remove unused GetDashboard method

* Uncomment test

* Fix dashboard service integration test

* Remove comment
2022-02-04 17:21:06 +01:00
George Robinson
9df43abbb5
Fix evaluation of alert rules for datasources with custom headers (#44862)
* Fix evaluation of alert rules for datasources with custom headers

* Fix unit tests

* Fix integration tests

* Evaluator fields should be package private
2022-02-04 14:56:37 +01:00
Serge Zaitsev
84a5910e56
Chore: Remove bus from ngalert (#44465)
* pass notification service down to the notifiers

* add ns to all notifiers

* remove bus from ngalert notifiers

* use smaller interfaces for notificationservice

* attempt to fix the tests

* remove unused struct field

* simplify notification service mock

* trying to resolve issues in the tests

* make linter happy

* make linter even happier

* linter, you are annoying
2022-01-26 16:42:40 +01:00
Ryan McKinley
2754e4fdf0
Expressions: use datasource model from the query (#41376)
* refactor datasource loading

* refactor datasource loading

* pass uid

* use dscache in alerting to get DS

* remove expr/translate pacakge

* remove dup injection entry

* fix DS type on metrics endpoint, remove SQL DS lookup inside SSE

* update test and adapter

* comment fix

* Make eval run as admin when getting datasource info

Co-authored-by: Marcus Efraimsson <marcus.efraimsson@gmail.com>

* fmt and comment

* remove unncessary/redundant code

Co-authored-by: Kyle Brandt <kyle@grafana.com>
Co-authored-by: Marcus Efraimsson <marcus.efraimsson@gmail.com>
Co-authored-by: Santiago <santiagohernandez.1997@gmail.com>
2021-12-16 13:51:46 -03:00
Armand Grillet
6523486122
Alerting: Make Unified Alerting enabled by default for those who do not use legacy alerting (#42200)
* update AlertingEnabled and UnifiedAlertingSettings.Enabled to be pointers
* add a pseudo migration to fix the AlertingEnabled and UnifiedAlertingSettings.Enabled if the latter is not defined
* update the default configuration file to make default value for both 'enabled' flags be undefined

Misc
* update Migrator to expose DB engine. This is needed for a ualert migration to access the database while the list of migrations is created.
* add more verbose failure when migrations do not match

Co-authored-by: gotjosh <josue@grafana.com>
Co-authored-by: Yuriy Tseretyan <yuriy.tseretyan@grafana.com>
Co-authored-by: gillesdemey <gilles.de.mey@gmail.com>
2021-11-24 14:56:07 -05:00
Marcus Efraimsson
baab021fec
Chore: Refactor usage of legacy data contracts (#41218)
Refactor usage of legacy data contracts. Moves legacy data contracts 
to pkg/tsdb/legacydata package.
Refactor pkg/expr to be a proper service/dependency that can be provided 
to wire to remove some unneeded dependencies to SSE in ngalert and other places.
Refactor pkg/expr to not use the legacydata,RequestHandler and use 
backend.QueryDataHandler instead.
2021-11-10 11:52:16 +01:00
Tania B
5652bde447
Encryption: Use secrets service (#40251)
* Use secrets service in pluginproxy

* Use secrets service in pluginxontext

* Use secrets service in pluginsettings

* Use secrets service in provisioning

* Use secrets service in authinfoservice

* Use secrets service in api

* Use secrets service in sqlstore

* Use secrets service in dashboardshapshots

* Use secrets service in tsdb

* Use secrets service in datasources

* Use secrets service in alerting

* Use secrets service in ngalert

* Break cyclic dependancy

* Refactor service

* Break cyclic dependancy

* Add FakeSecretsStore

* Setup Secrets Service in sqlstore

* Fix

* Continue secrets service refactoring

* Fix cyclic dependancy in sqlstore tests

* Fix secrets service references

* Fix linter errors

* Add fake secrets service for tests

* Refactor SetupTestSecretsService

* Update setting up secret service in tests

* Fix missing secrets service in multiorg_alertmanager_test

* Use fake db in tests and sort imports

* Use fake db in datasources tests

* Fix more tests

* Fix linter issues

* Attempt to fix plugin proxy tests

* Pass secrets service to getPluginProxiedRequest in pluginproxy tests

* Fix pluginproxy tests

* Revert using secrets service in alerting and provisioning

* Update decryptFn in alerting migration

* Rename defaultProvider to currentProvider

* Use fake secrets service in alert channels tests

* Refactor secrets service test helper

* Update setting up secrets service in tests

* Revert alerting changes in api

* Add comments

* Remove secrets service from background services

* Convert global encryption functions into vars

* Revert "Convert global encryption functions into vars"

This reverts commit 498eb19859.

* Add feature toggle for envelope encryption

* Rename toggle

Co-authored-by: Emil Tullstedt <emil.tullstedt@grafana.com>
Co-authored-by: Joan López de la Franca Beltran <joanjan14@gmail.com>
2021-11-04 18:47:21 +02:00
Joan López de la Franca Beltran
722c414fef
Encryption: Refactor securejsondata.SecureJsonData to stop relying on global functions (#38865)
* Encryption: Add support to encrypt/decrypt sjd

* Add datasources.Service as a proxy to datasources db operations

* Encrypt ds.SecureJsonData before calling SQLStore

* Move ds cache code into ds service

* Fix tlsmanager tests

* Fix pluginproxy tests

* Remove some securejsondata.GetEncryptedJsonData usages

* Add pluginsettings.Service as a proxy for plugin settings db operations

* Add AlertNotificationService as a proxy for alert notification db operations

* Remove some securejsondata.GetEncryptedJsonData usages

* Remove more securejsondata.GetEncryptedJsonData usages

* Fix lint errors

* Minor fixes

* Remove encryption global functions usages from ngalert

* Fix lint errors

* Minor fixes

* Minor fixes

* Remove securejsondata.DecryptedValue usage

* Refactor the refactor

* Remove securejsondata.DecryptedValue usage

* Move securejsondata to migrations package

* Move securejsondata to migrations package

* Minor fix

* Fix integration test

* Fix integration tests

* Undo undesired changes

* Fix tests

* Add context.Context into encryption methods

* Fix tests

* Fix tests

* Fix tests

* Trigger CI

* Fix test

* Add names to params of encryption service interface

* Remove bus from CacheServiceImpl

* Add logging

* Add keys to logger

Co-authored-by: Emil Tullstedt <emil.tullstedt@grafana.com>

* Add missing key to logger

Co-authored-by: Emil Tullstedt <emil.tullstedt@grafana.com>

* Undo changes in markdown files

* Fix formatting

* Add context to secrets service

* Rename decryptSecureJsonData to decryptSecureJsonDataFn

* Name args in GetDecryptedValueFn

* Add template back to NewAlertmanagerNotifier

* Copy GetDecryptedValueFn to ngalert

* Add logging to pluginsettings

* Fix pluginsettings test

Co-authored-by: Tania B <yalyna.ts@gmail.com>
Co-authored-by: Emil Tullstedt <emil.tullstedt@grafana.com>
2021-10-07 17:33:50 +03:00
Santiago
562cd9e44e
Alerting template functions (#39261)
* Alerting: (wip) add template funcs

* Alerting: (wip) numeric template functions

* Alerting: (wip) template functions

* Test for the "args" function

* Alerting: (wip) Documentation for template functions

* Alerting: template functions - refactor

* code review changes

* disable linter error

* Use Prometheus implementation of TemplateExpander

* Update docs/sources/alerting/unified-alerting/alerting-rules/create-grafana-managed-rule.md

Co-authored-by: achatterjee-grafana <70489351+achatterjee-grafana@users.noreply.github.com>

* change templateCaptureValue to support using template functions

* Update pkg/services/ngalert/state/template.go

Co-authored-by: gotjosh <josue.abreu@gmail.com>

* Test and documentation added for reReplaceAll template function

* complete missing functions, documentation and tests

* Use the alert instance's evaluation time for expanding the template

* strvalue graphlink and tablelink functions

* delete duplicate test

* make strvalue return an empty string

Co-authored-by: achatterjee-grafana <70489351+achatterjee-grafana@users.noreply.github.com>
Co-authored-by: gotjosh <josue.abreu@gmail.com>
2021-10-04 15:04:37 -03:00