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2 changes: 1 addition & 1 deletion
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.../IncomingMessages.Infrastructure/MessageParsers/BaseParsers/Xml/MessageHeaderExtractor.cs
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124 changes: 124 additions & 0 deletions
124
source/IncomingMessages.Infrastructure/MessageParsers/BaseParsers/Xml/SchemaExtractor.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,124 @@ | ||
| // Copyright 2020 Energinet DataHub A/S | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License2"); | ||
| // 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. | ||
|
|
||
| using System.Xml; | ||
| using System.Xml.Schema; | ||
| using Energinet.DataHub.EDI.BuildingBlocks.Domain.Models; | ||
| using Energinet.DataHub.EDI.IncomingMessages.Domain.Validation.ValidationErrors; | ||
| using Energinet.DataHub.EDI.IncomingMessages.Infrastructure.Schemas.Cim.Xml; | ||
|
|
||
| namespace Energinet.DataHub.EDI.IncomingMessages.Infrastructure.MessageParsers.BaseParsers.Xml; | ||
|
|
||
| public static class SchemaExtractor | ||
| { | ||
| public static async Task<(XmlSchema? Schema, string? Namespace, IncomingMarketMessageParserResult? ParserResult)> GetXmlSchemaAsync( | ||
| IIncomingMarketMessageStream incomingMarketMessageStream, | ||
| string rootElement, | ||
| CimXmlSchemaProvider schemaProvider, | ||
| CancellationToken cancellationToken) | ||
| { | ||
| string? @namespace = null; | ||
| IncomingMarketMessageParserResult? parserResult = null; | ||
| XmlSchema? xmlSchema = null; | ||
| try | ||
| { | ||
| @namespace = GetNamespace(incomingMarketMessageStream, rootElement); | ||
| var version = GetVersion(@namespace); | ||
| var businessProcessType = BusinessProcessType(@namespace); | ||
| xmlSchema = await schemaProvider.GetSchemaAsync<XmlSchema>(businessProcessType, version, cancellationToken) | ||
| .ConfigureAwait(true); | ||
|
|
||
| if (xmlSchema is null) | ||
| { | ||
| parserResult = new IncomingMarketMessageParserResult( | ||
| new InvalidBusinessReasonOrVersion(businessProcessType, version)); | ||
| } | ||
| } | ||
| catch (XmlException exception) | ||
| { | ||
| parserResult = InvalidXmlFailure(exception); | ||
| } | ||
| catch (ObjectDisposedException objectDisposedException) | ||
| { | ||
| parserResult = InvalidXmlFailure(objectDisposedException); | ||
| } | ||
| catch (IndexOutOfRangeException indexOutOfRangeException) | ||
| { | ||
| parserResult = InvalidXmlFailure(indexOutOfRangeException); | ||
| } | ||
|
|
||
| return (xmlSchema, @namespace, parserResult); | ||
| } | ||
|
|
||
| private static IncomingMarketMessageParserResult InvalidXmlFailure( | ||
| Exception exception) | ||
| { | ||
| return new IncomingMarketMessageParserResult( | ||
| InvalidMessageStructure.From(exception)); | ||
| } | ||
|
|
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| private static string GetNamespace(IIncomingMarketMessageStream marketMessage, string rootElement) | ||
| { | ||
| ArgumentNullException.ThrowIfNull(marketMessage); | ||
|
|
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| var settings = new XmlReaderSettings | ||
| { | ||
| Async = true, | ||
| IgnoreWhitespace = true, | ||
| IgnoreComments = true, | ||
| }; | ||
|
|
||
| using var reader = XmlReader.Create(marketMessage.Stream, settings); | ||
| while (reader.Read()) | ||
| { | ||
| if (reader.NodeType == XmlNodeType.Element && reader.Name.Contains(rootElement)) | ||
| { | ||
| return reader.NamespaceURI; | ||
| } | ||
| } | ||
|
|
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| throw new XmlException($"Namespace for element '{rootElement}' not found."); | ||
| } | ||
|
|
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| private static string BusinessProcessType(string @namespace) | ||
| { | ||
| ArgumentNullException.ThrowIfNull(@namespace); | ||
| var split = SplitNamespace(@namespace); | ||
| if (split.Length < 6) | ||
| { | ||
| throw new XmlException($"Invalid namespace format"); | ||
| } | ||
|
|
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| return split[3]; | ||
| } | ||
|
|
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| private static string GetVersion(string @namespace) | ||
| { | ||
| ArgumentNullException.ThrowIfNull(@namespace); | ||
| var split = SplitNamespace(@namespace); | ||
| if (split.Length < 5) | ||
| { | ||
| throw new XmlException($"Invalid namespace format"); | ||
| } | ||
|
|
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| var version = split[4] + "." + split[5]; | ||
| return version; | ||
| } | ||
|
|
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| private static string[] SplitNamespace(string @namespace) | ||
| { | ||
| ArgumentNullException.ThrowIfNull(@namespace); | ||
| return @namespace.Split(':'); | ||
| } | ||
| } |
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