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(DataFlex) OneDrive -- Upload Large Files with an Upload SessionSee more OneDrive ExamplesDemonstrates how to upload large files with an upload session. See OneDrive Upload Session for more general information. Note: This example requires Chilkat v9.5.0.97 or greater.
Use ChilkatAx-win32.pkg Procedure Test Boolean iSuccess Handle hoJson Handle hoHttp String sUrl Variant vResp Handle hoResp Handle hoJsonSession Integer iFragSize String sLocalFilePath Handle hoFac Integer iFileSize Integer iNumFragments Integer i Handle hoUploadUrl Variant vReq Handle hoReq Handle hoSbOffset Handle hoSbNumBytes Handle hoSbRange Integer iBytesRemaining Integer iChunkSize Integer iExpectedStatusCode Integer iNumReplaced String sTemp1 String sTemp2 Integer iTemp1 Boolean bTemp1 // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // This example uses the OAuth client credentials flow. // See How to Create an Azure App Registration for OAuth 2.0 Client Credentials // Use your client ID, client secret, and tenant ID in the following lines Get Create (RefClass(cComChilkatJsonObject)) To hoJson If (Not(IsComObjectCreated(hoJson))) Begin Send CreateComObject of hoJson End Get ComUpdateString Of hoJson "client_id" "2871da2c-8176-4b7f-869b-2311aa82e743" To iSuccess Get ComUpdateString Of hoJson "client_secret" "2hu9Q~r5QuryUcEkNbg1btLtnfU1VUXzhSCG6brH" To iSuccess Get ComUpdateString Of hoJson "scope" "https://graph.microsoft.com/.default" To iSuccess Get ComUpdateString Of hoJson "token_endpoint" "https://login.microsoftonline.com/114d7ed6-71bf-4dbe-a866-748364121bf2/oauth2/v2.0/token" To iSuccess Get Create (RefClass(cComChilkatHttp)) To hoHttp If (Not(IsComObjectCreated(hoHttp))) Begin Send CreateComObject of hoHttp End Get ComEmit Of hoJson To sTemp1 Set ComAuthToken Of hoHttp To sTemp1 // ---------------------------------------------------------------------------- // Step 1: Create an upload session // To begin a large file upload, your app must first request a new upload session. This creates a // temporary storage location where the bytes of the file will be saved until the complete file is uploaded. // Once the last byte of the file has been uploaded the upload session is completed and the final file is shown // in the destination folder. // Send the following POST to create an upload session: // If not using "me", then the path should be /v1.0/users/{id | userPrincipalName}/... // POST /v1.0/users/{user_id}/drive/root:/{path_to_item}:/createUploadSession Get ComSetUrlVar Of hoHttp "path_to_item" "/somefolder/big.zip" To iSuccess Get ComSetUrlVar Of hoHttp "user_id" "4fe732c3-322e-4a6b-b729-2fd1eb5c6104" To iSuccess Move "https://graph.microsoft.com/v1.0/users/{$user_id}/drive/root:/{$path_to_item}:/createUploadSession" To sUrl Get ComPostJson2 Of hoHttp sUrl "application/json" "{}" To vResp If (IsComObject(vResp)) Begin Get Create (RefClass(cComChilkatHttpResponse)) To hoResp Set pvComObject Of hoResp To vResp End Get ComLastMethodSuccess Of hoHttp To bTemp1 If (bTemp1 <> True) Begin Get ComLastErrorText Of hoHttp To sTemp1 Showln sTemp1 Procedure_Return End // If successful, a 200 status code is returned, with the session details (in JSON format). Get Create (RefClass(cComChilkatJsonObject)) To hoJsonSession If (Not(IsComObjectCreated(hoJsonSession))) Begin Send CreateComObject of hoJsonSession End Set ComEmitCompact Of hoJsonSession To False Get ComBodyStr Of hoResp To sTemp1 Get ComLoad Of hoJsonSession sTemp1 To iSuccess Get ComStatusCode Of hoResp To iTemp1 If (iTemp1 <> 200) Begin Get ComEmit Of hoJsonSession To sTemp1 Showln sTemp1 Get ComStatusCode Of hoResp To iTemp1 Showln "Response status = " iTemp1 Send Destroy of hoResp Procedure_Return End Send Destroy of hoResp Get ComEmit Of hoJsonSession To sTemp1 Showln sTemp1 // A sample response: // { // "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#microsoft.graph.uploadSession", // "uploadUrl": "https://api.onedrive.com/rup/3a33fceb9b74cc15/eyJSZXNvdXJjZUlEI ... 65yDYUiS3JTDnnhqCHxw", // "expirationDateTime": "2017-06-11T12:40:23.239Z", // "nextExpectedRanges": [ // "0-" // ] // } // // ---------------------------------------------------------------------------- // Step 2: Upload Data in Segments (a.k.a. Fragments or Chunks) // Microsoft states this requirement: Use a fragment size that is a multiple of 320 KiB (320 * 1024 bytes). // Failing to use a fragment size that is a multiple of 320 KiB can result in large file transfers failing after the // last fragment is uploaded. (Note: This is a detail imposed by Microsoft's OneDrive server-side implementation.) Move (320 * 1024) To iFragSize Move "qa_data/zips/big.zip" To sLocalFilePath // Upload the file big.zip in 320KiB segments. // Note: The FileSize method returns a signed 32-bit integer. If the file is potentially larger than 2GB, call FileSizeStr instead to return // the size of the file as a string, then convert to an integer value. Get Create (RefClass(cComCkFileAccess)) To hoFac If (Not(IsComObjectCreated(hoFac))) Begin Send CreateComObject of hoFac End Get ComFileSize Of hoFac sLocalFilePath To iFileSize // Open the file to get the number of fragments. Get ComOpenForRead Of hoFac sLocalFilePath To iSuccess If (iSuccess = False) Begin Get ComLastErrorText Of hoFac To sTemp1 Showln sTemp1 Procedure_Return End Get ComGetNumBlocks Of hoFac iFragSize To iNumFragments Send ComFileClose To hoFac Move 0 To i Showln "fileSize = " iFileSize Showln "numFragments = " iNumFragments Get Create (RefClass(cComChilkatUrl)) To hoUploadUrl If (Not(IsComObjectCreated(hoUploadUrl))) Begin Send CreateComObject of hoUploadUrl End Get ComStringOf Of hoJsonSession "uploadUrl" To sTemp1 Get ComParseUrl Of hoUploadUrl sTemp1 To iSuccess Set ComEmitCompact Of hoJson To False Get Create (RefClass(cComChilkatHttpRequest)) To hoReq If (Not(IsComObjectCreated(hoReq))) Begin Send CreateComObject of hoReq End Set ComHttpVerb Of hoReq To "PUT" Get ComPathWithQueryParams Of hoUploadUrl To sTemp1 Set ComPath Of hoReq To sTemp1 Set ComContentType Of hoReq To "application/octet-stream" Get Create (RefClass(cComChilkatStringBuilder)) To hoSbOffset If (Not(IsComObjectCreated(hoSbOffset))) Begin Send CreateComObject of hoSbOffset End Get Create (RefClass(cComChilkatStringBuilder)) To hoSbNumBytes If (Not(IsComObjectCreated(hoSbNumBytes))) Begin Send CreateComObject of hoSbNumBytes End Get Create (RefClass(cComChilkatStringBuilder)) To hoSbRange If (Not(IsComObjectCreated(hoSbRange))) Begin Send CreateComObject of hoSbRange End // IMPORTANT: The uploadUrl is a temporary URL to be used to upload the fragment. // It requires no authentication (because the URL itself could only have been obtained from an authenticated // request to start the upload session). Therefore, do not allow the upload URL to be publicly seen, // otherwise anybody could upload to your OneDrive. Set ComAuthToken Of hoHttp To "" Move iFileSize To iBytesRemaining While (i < iNumFragments) // The success response code for intermediate chunks is 202, // whereas the final chunk will have a 201 success response where // the response body is the JSON DriveItem. Move iFragSize To iChunkSize Move 202 To iExpectedStatusCode If (iBytesRemaining < iChunkSize) Begin Move iBytesRemaining To iChunkSize Move 201 To iExpectedStatusCode End Showln " this chunkSize = " iChunkSize // Indicate the fragment in the local file to be streamed in the upload. Send ComClear To hoSbOffset Get ComAppendInt Of hoSbOffset (i * iFragSize) To iSuccess Send ComClear To hoSbNumBytes Get ComAppendInt Of hoSbNumBytes iChunkSize To iSuccess Get ComGetAsString Of hoSbOffset To sTemp1 Get ComGetAsString Of hoSbNumBytes To sTemp2 Get ComStreamChunkFromFile Of hoReq sLocalFilePath sTemp1 sTemp2 To iSuccess // The Content-Range header field must be set for this fragment. For example: // Content-Range: bytes 0-25/128 Get ComSetString Of hoSbRange "bytes start-end/fileSize" To iSuccess Get ComReplaceI Of hoSbRange "start" (i * iFragSize) To iNumReplaced Get ComReplaceI Of hoSbRange "end" (i * iFragSize + iChunkSize - 1) To iNumReplaced Get ComReplaceI Of hoSbRange "fileSize" iFileSize To iNumReplaced Get ComGetAsString Of hoSbRange To sTemp1 Send ComAddHeader To hoReq "Content-Range" sTemp1 Get ComGetAsString Of hoSbRange To sTemp1 Showln " this content-range: " sTemp1 Get ComHost Of hoUploadUrl To sTemp1 Get pvComObject of hoReq to vReq Get ComSynchronousRequest Of hoHttp sTemp1 443 True vReq To vResp If (IsComObject(vResp)) Begin Get Create (RefClass(cComChilkatHttpResponse)) To hoResp Set pvComObject Of hoResp To vResp End Get ComLastMethodSuccess Of hoHttp To bTemp1 If (bTemp1 <> True) Begin Get ComLastErrorText Of hoHttp To sTemp1 Showln sTemp1 Procedure_Return End Get ComBodyStr Of hoResp To sTemp1 Get ComLoad Of hoJson sTemp1 To iSuccess // A 202 response status code indicates success. Get ComStatusCode Of hoResp To iTemp1 If (iTemp1 <> iExpectedStatusCode) Begin Get ComEmit Of hoJson To sTemp1 Showln sTemp1 Get ComStatusCode Of hoResp To iTemp1 Showln "Response status = " iTemp1 Send Destroy of hoResp Procedure_Return End Send Destroy of hoResp Get ComEmit Of hoJson To sTemp1 Showln sTemp1 Showln "---- Chunk " i " uploaded ----" Move (iBytesRemaining - iChunkSize) To iBytesRemaining Move (i + 1) To i Loop Showln "data uploaded." // ---------------------------------------------------------------------------- // Sample output for the above session: // { // "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#microsoft.graph.uploadSession", // "uploadUrl": "https://api.onedrive.com/rup/3a33fceb9b74cc15/eyJSZXNvd ... QoKK2iuh1A", // "expirationDateTime": "2017-06-11T14:04:45.438Z", // "nextExpectedRanges": [ // "0-" // ] // } // // fileSize = 1366807 // numFragments = 5 // this chunkSize = 327680 // this content-range: bytes 0-327679/1366807 // { // "expirationDateTime": "2017-06-11T14:04:45.438Z", // "nextExpectedRanges": [ // "327680-1366806" // ] // } // // ---- Chunk 0 uploaded ---- // this chunkSize = 327680 // this content-range: bytes 327680-655359/1366807 // { // "expirationDateTime": "2017-06-11T14:04:45.438Z", // "nextExpectedRanges": [ // "655360-1366806" // ] // } // // ---- Chunk 1 uploaded ---- // this chunkSize = 327680 // this content-range: bytes 655360-983039/1366807 // { // "expirationDateTime": "2017-06-11T14:04:45.438Z", // "nextExpectedRanges": [ // "983040-1366806" // ] // } // // ---- Chunk 2 uploaded ---- // this chunkSize = 327680 // this content-range: bytes 983040-1310719/1366807 // { // "expirationDateTime": "2017-06-11T14:04:45.438Z", // "nextExpectedRanges": [ // "1310720-1366806" // ] // } // // ---- Chunk 3 uploaded ---- // this chunkSize = 56087 // this content-range: bytes 1310720-1366806/1366807 // { // "createdBy": { // "application": { // "displayName": "Chilkat", // "id": "441c9990" // }, // "user": { // "id": "3a33fceb9b74cc15" // } // }, // "createdDateTime": "2017-06-04T14:04:47.247Z", // "cTag": "aYzozQTMzRkNFQjlCNzRDQzE1ITQ4NjguMjU3", // "eTag": "aM0EzM0ZDRUI5Qjc0Q0MxNSE0ODY4LjA", // "id": "3A33FCEB9B74CC15!4868", // "lastModifiedBy": { // "application": { // "displayName": "Chilkat", // "id": "441c9990" // }, // "user": { // "id": "3a33fceb9b74cc15" // } // }, // "lastModifiedDateTime": "2017-06-04T14:04:47.247Z", // "name": "big.zip", // "parentReference": { // "driveId": "3a33fceb9b74cc15", // "id": "3A33FCEB9B74CC15!4862", // "name": "someFolder", // "path": "/drive/root:/someFolder" // }, // "size": 1366807, // "webUrl": "https://1drv.ms/u/s!ABXMdJvr_DM6pgQ", // "file": { // "hashes": { // "sha1Hash": "252059AA13004220DB912B97D4D3FF9599CCD8D9" // }, // "mimeType": "application/zip" // }, // "fileSystemInfo": { // "createdDateTime": "2017-06-04T14:04:47.246Z", // "lastModifiedDateTime": "2017-06-04T14:04:47.246Z" // }, // "tags": [ // ], // "lenses": [ // ] // } // // Response status = 201 End_Procedure |
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