Public/Send-SlackMessage.ps1
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function Send-SlackMessage { <# .SYNOPSIS Send a Slack message .DESCRIPTION Send a Slack message You can use the parameters here to build the message, or provide a SlackMessage created with New-SlackMessage .PARAMETER Token Token to use for the Slack API Default value is the value set by Set-PSSlackConfig This takes precedence over Uri .PARAMETER Uri Uri to use for an incoming webhook Default value is the value set by Set-PSSlackConfig If Token is set, this is ignored .PARAMETER Proxy Proxy server to use Default value is the value set by Set-PSSlackConfig .PARAMETER SlackMessage A SlackMessage created by New-SlackMessage .PARAMETER Channel Channel, private group, or IM channel to send message to. Can be an encoded ID, or a name. .PARAMETER Text Text of the message to send See formatting spec for more information. https://api.slack.com/docs/formatting .PARAMETER Username Set your bot's user name. If using a Token, must be used in conjunction with as_user set to false, otherwise ignored See authorship details: https://api.slack.com/methods/chat.postMessage#authorship .PARAMETER IconUrl URL to an image to use as the icon for this message. If using a Token, must be used in conjunction with as_user set to false, otherwise ignored. See authorship details: https://api.slack.com/methods/chat.postMessage#authorship .PARAMETER IconEmoji Emoji to use as the icon for this message. Overrides icon_url. Must be used in conjunction with as_user set to false, otherwise ignored .PARAMETER AsUser Use true to post the message as the authed user, instead of as a bot. Defaults to false. See authorship details: https://api.slack.com/methods/chat.postMessage#authorship .PARAMETER LinkNames Find and link channel names and usernames. .PARAMETER Parse Change how messages are treated. Defaults to none If set to full, channels like #general and usernames like @bob will be linkified. More details here: https://api.slack.com/docs/formatting#linking_to_channels_and_users .PARAMETER UnfurlLinks Use true to enable unfurling of primarily text-based content. .PARAMETER UnfurlMedia Use false to disable unfurling of media content. .PARAMETER Attachments Optional rich structured message attachments. Provide one or more hash tables created using New-SlackMessageAttachment See attachments spec https://api.slack.com/docs/attachments .EXAMPLE # This example shows a crudely crafted message without any attachments, # using parameters from Send-SlackMessage to construct the message. #Previously set up Uri from https://<YOUR TEAM>.slack.com/apps/A0F7XDUAZ $Uri = "Some incoming webhook uri from Slack" Send-SlackMessage -Uri $Uri ` -Channel '@wframe' ` -Parse full ` -Text 'Hello @wframe, join me in #devnull!' # Send a message to @wframe (not a channel), parsing the text to linkify usernames and channels .EXAMPLE # This is a simple example illustrating some common options # when constructing a message attachment # giving you a richer message $Token = 'A token. maybe from https://api.slack.com/docs/oauth-test-tokens' New-SlackMessageAttachment -Color $_PSSlackColorMap.red ` -Title 'The System Is Down' ` -TitleLink https://www.youtube.com/watch?v=TmpRs7xN06Q ` -Text 'Please Do The Needful' ` -Pretext 'Everything is broken' ` -AuthorName 'SCOM Bot' ` -AuthorIcon 'http://ramblingcookiemonster.github.io/images/tools/wrench.png' ` -Fallback 'Your client is bad' | New-SlackMessage -Channel '@wframe' ` -IconEmoji :bomb: | Send-SlackMessage -Token $Token # Create a message attachment with details about an alert # Attach this to a slack message sending to the devnull channel # Send the newly created message using a token .EXAMPLE # This example demonstrates that you can chain new attachments # together to form a multi-attachment message $Token = 'A token. maybe from https://api.slack.com/docs/oauth-test-tokens' New-SlackMessageAttachment -Color $_PSSlackColorMap.red ` -Title 'The System Is Down' ` -TitleLink https://www.youtube.com/watch?v=TmpRs7xN06Q ` -Text 'Everybody panic!' ` -Pretext 'Everything is broken' ` -Fallback 'Your client is bad' | New-SlackMessageAttachment -Color $_PSSlackColorMap.orange ` -Title 'The Other System Is Down' ` -TitleLink https://www.youtube.com/watch?v=TmpRs7xN06Q ` -Text 'Please Do The Needful' ` -Fallback 'Your client is bad' | New-SlackMessage -Channel '@wframe' ` -IconEmoji :bomb: ` -AsUser ` -Username 'SCOM Bot' | Send-SlackMessage -Token $Token # Create an attachment, create another attachment, # add these to a message, # and send with a token .EXAMPLE # This example illustrates a pattern where you might # want to send output from a script; you might # include errors, successful items, or other output # Pretend we're in a script, and caught an exception of some sort $Fail = [pscustomobject]@{ samaccountname = 'bob' operation = 'Remove privileges' status = "An error message" timestamp = (Get-Date).ToString() } # Create an array from the properties in our fail object $Fields = @() foreach($Prop in $Fail.psobject.Properties.Name) { $Fields += @{ title = $Prop value = $Fail.$Prop short = $true } } $Token = 'A token. maybe from https://api.slack.com/docs/oauth-test-tokens' # Construct and send the message! New-SlackMessageAttachment -Color $_PSSlackColorMap.orange ` -Title 'Failed to process account' ` -Fields $Fields ` -Fallback 'Your client is bad' | New-SlackMessage -Channel 'devnull' | Send-SlackMessage -Uri $uri # We build up a pretend error object, and send each property to a 'Fields' array # Creates an attachment with the fields from our error # Creates a message fromthat attachment and sents it with a uri .NOTES ON AUTHORIZATION: We don't get fancy with ParameterSets. Here's a breakdown of how we pick Uri or Token: Parameters are used before Set-PSSlackConfig settings Tokens are used before Uri Examples: Uri parameter specified, token exists in Set-PSSlackConfig: Uri is used Uri and token exist in Set-PSSlackConfig: token is used Token and Uri parameters are specified: Token is used ON OUTPUT: The Slack API and Incoming Webhook alter the output Send-SlackMessage will provide. If you use a Uri for an Incoming Webhook, Slack will return a string: "ok" if the call succeeded An error string if something went wrong If you use a token, we get a bit more detail back: ok : True channel : D0ST7FE6Q ts : 1463254594.000027 message : @{text=; username=Slack API Tester; icons=; attachments=System.Object[]; type=message;... link : ArchiveUri.From.Set-PSSlackConfig/D0ST7FE6Q/p1463254594000027 If you use a token and things don't go so well, the OK field will not be true: ok error -- ----- False channel_not_found .FUNCTIONALITY Slack #> [cmdletbinding(DefaultParameterSetName = 'SlackMessage')] param ( [Parameter()] [ValidateNotNullOrEmpty()] [string]$Token = $Script:PSSlack.Token, [Parameter()] [ValidateNotNullOrEmpty()] [string]$Uri = $Script:PSSlack.Uri, [Parameter()] [ValidateNotNullOrEmpty()] [string]$Proxy = $Script:PSSlack.Proxy, [PSTypeName('PSSlack.Message')] [parameter(ParameterSetName = 'SlackMessage', ValueFromPipeline = $True)] $SlackMessage, $Channel, [parameter(ParameterSetName = 'Param', ValueFromPipelineByPropertyName = $True, Position = 1)] $Text, [parameter(ParameterSetName = 'Param', ValueFromPipelineByPropertyName = $True)] $Username, [parameter(ParameterSetName = 'Param', ValueFromPipelineByPropertyName = $True)] $IconUrl, [parameter(ParameterSetName = 'Param', ValueFromPipelineByPropertyName = $True)] $IconEmoji, [parameter(ParameterSetName = 'Param', ValueFromPipelineByPropertyName = $True)] [switch]$AsUser, [parameter(ParameterSetName = 'Param', ValueFromPipelineByPropertyName = $True)] [switch]$LinkNames, [parameter(ParameterSetName = 'Param', ValueFromPipelineByPropertyName = $True)] [validateset('full','none')] [string]$Parse = 'none', [parameter(ParameterSetName = 'Param', ValueFromPipelineByPropertyName = $True)] [validateset($True, $False)] [bool]$UnfurlLinks, [parameter(ParameterSetName = 'Param', ValueFromPipelineByPropertyName = $True)] [validateset($True, $False)] [bool]$UnfurlMedia, [parameter(ParameterSetName = 'Param', ValueFromPipelineByPropertyName = $True)] [PSTypeName('PSSlack.MessageAttachment')] [System.Collections.Hashtable[]]$Attachments ) begin { Write-Debug "Send-SlackMessage Bound parameters: $($PSBoundParameters | Out-String)`nParameterSetName $($PSCmdlet.ParameterSetName)" $Messages = @() $ProxyParam = @{} if($Proxy) { $ProxyParam.Proxy = $Proxy } } process { if($PSCmdlet.ParameterSetName -eq 'Param') { $body = @{ } switch ($psboundparameters.keys) { 'channel' {$body.channel = $channel } 'text' {$body.text = $text} 'username' {$body.username = $username} 'asuser' {$body.as_user = $AsUser} 'iconurl' {$body.icon_url = $iconurl} 'iconemoji' {$body.icon_emoji = $iconemoji} 'linknames' {$body.link_names = 1} 'parse' {$body.parse = $Parse} 'UnfurlLinks' {$body.unfurl_links = $UnfurlLinks} 'UnfurlMedia' {$body.unfurl_media = $UnfurlMedia} 'attachments' {$body.attachments = $Attachments} } $Messages += $Body } else { foreach($Message in $SlackMessage) { $Messages += $SlackMessage } } } end { foreach($Message in $Messages) { if($Token -or ($Script:PSSlack.Token -and -not $Uri)) { if($Message.attachments) { $Message.attachments = ConvertTo-Json -InputObject @($Message.attachments) -Depth 4 -Compress } Write-Verbose "Send-SlackApi -Body $($Message | Format-List | Out-String)" $response = Send-SlackApi @ProxyParam -Method chat.postMessage -Body $Message -Token $Token if ($response.ok) { $link = "$($Script:PSSlack.ArchiveUri)/$($response.channel)/p$($response.ts -replace '\.')" $response | Add-Member -MemberType NoteProperty -Name link -Value $link } $response } elseif($Uri -or $Script:PSSlack.Uri) { $json = ConvertTo-Json -Depth 4 -Compress -InputObject $Message Invoke-RestMethod @ProxyParam -Method Post -Body $json -Uri $Uri } else { Throw 'No Uri or Token specified. Specify a Uri or Token in the parameters or via Set-PSSlackConfig' } } } } |