src/metadata/GraphManager.ps1
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# Copyright 2018, Adam Edwards # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. . (import-script GraphCache) ScriptClass GraphManager { static { $cache = $null function __initialize { $this.cache = new-so GraphCache # Start an asynchronous load of the metadata unless this is disabled # This is only meant for user interactive sessions and should be # disabled if this module is used in background jobs if ( ! (get-variable -scope script -name '__poshgraph_no_auto_metadata' -erroraction silentlycontinue) ) { write-verbose "Asynchronously updating Graph metadata" UpdateGraph ($::.GraphContext |=> GetCurrent) } else { write-verbose "Found __poshgraph_no_auto_metadata variable, skipping Graph metadata update" } } function UpdateGraph($context, $metadata = $null, $wait = $false, $force = $false) { __GetGraph ($context |=> GetEndpoint) $context.version $metadata $wait $force $true | out-null $uriCache = $context |=> GetState uriCache if ( $uriCache ) { $uriCache.Clear() # Need to change this to handle async retrieval of new graph } } function GetMetadataStatus($context) { $this.cache |=> GetMetadataStatus $context.connection.GraphEndpoint.Graph $context.version } function GetGraph($context, $metadata = $null, $force = $false) { __GetGraph ($context |=> GetEndpoint) $context.version $metadata $true $force } function __GetGraph($endpoint, $apiVersion, $metadata, $wait = $false, $force = $false, $forceupdate = $false) { if ( $Force ) { $this.cache |=> CancelPendingGraph $endpoint $apiVersion } if ( $wait -and ! $forceupdate ) { $this.cache |=> GetGraph $endpoint $apiVersion $metadata } else { $asyncResult = $this.cache |=> GetGraphAsync $endpoint $apiVersion $metadata if ( $wait ) { $this.cache |=> WaitForGraphAsync $asyncResult } else { $asyncResult } } } } } $::.GraphManager |=> __initialize |