Objective-C
Objective-C
Azure Storage: List Blobs
See more Azure Cloud Storage Examples
Azure Storage Blob Service REST API: Sample code to fetch the list of blobs in the specified container.Chilkat Objective-C Downloads
#import <CkoRest.h>
#import <CkoAuthAzureStorage.h>
#import <NSString.h>
#import <CkoXml.h>
#import <CkoDateTime.h>
#import <CkoDtObj.h>
BOOL success = NO;
// Azure Blob Service Example: List the blobs in a specified container.
// See also: https://msdn.microsoft.com/en-us/library/azure/dd135734.aspx
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
CkoRest *rest = [[CkoRest alloc] init];
// Connect to the Azure Storage Blob Service
BOOL bTls = YES;
int port = 443;
BOOL bAutoReconnect = YES;
// In this example, the storage account name is "chilkat".
success = [rest Connect: @"chilkat.blob.core.windows.net" port: [NSNumber numberWithInt: port] tls: bTls autoReconnect: bAutoReconnect];
if (success == NO) {
NSLog(@"%@",rest.LastErrorText);
return;
}
// Provide Azure Cloud credentials for the REST call.
CkoAuthAzureStorage *azAuth = [[CkoAuthAzureStorage alloc] init];
azAuth.AccessKey = @"AZURE_ACCESS_KEY";
// The account name used here should match the 1st part of the domain passed in the call to Connect (above).
azAuth.Account = @"chilkat";
azAuth.Scheme = @"SharedKey";
azAuth.Service = @"Blob";
// This causes the "x-ms-version: 2021-08-06" header to be automatically added.
azAuth.XMsVersion = @"2021-08-06";
success = [rest SetAuthAzureStorage: azAuth];
// Note: The application does not need to explicitly set the following
// headers: x-ms-date, Authorization. These headers
// are automatically set by Chilkat.
// The expected success response is a 200 response status code with an XML response body.
// In this example, we are listing the blobs in the container named "mycontainer".
NSString *responseStr = [rest FullRequestNoBody: @"GET" uriPath: @"/mycontainer?restype=container&comp=list"];
if (rest.LastMethodSuccess == NO) {
NSLog(@"%@",rest.LastErrorText);
return;
}
// When successful, the Azure Storage service will respond with a 200 response status code,
// with an XML response body.
if ([rest.ResponseStatusCode intValue] != 200) {
// Examine the request/response to see what happened.
NSLog(@"%@%d",@"response status code = ",[rest.ResponseStatusCode intValue]);
NSLog(@"%@%@",@"response status text = ",rest.ResponseStatusText);
NSLog(@"%@%@",@"response header: ",rest.ResponseHeader);
NSLog(@"%@%@",@"response body (if any): ",responseStr);
NSLog(@"%@",@"---");
NSLog(@"%@%@",@"LastRequestStartLine: ",rest.LastRequestStartLine);
NSLog(@"%@%@",@"LastRequestHeader: ",rest.LastRequestHeader);
return;
}
// Load the XML response for parsing.
// An example of the response XML is shown below.
CkoXml *xml = [[CkoXml alloc] init];
success = [xml LoadXml: responseStr];
NSLog(@"%@",[xml GetXml]);
// Let's iterate over the blobs...
CkoDateTime *lastMod = [[CkoDateTime alloc] init];
int numBlobs = [[xml NumChildrenAt: @"Blobs"] intValue];
int i = 0;
CkoDtObj *dt = [[CkoDtObj alloc] init];
while (i < numBlobs) {
NSLog(@"%@%d%@",@"---- Blob ",i,@" ----");
xml.I = [NSNumber numberWithInt: i];
NSLog(@"%@%@",@"Name: ",[xml GetChildContent: @"Blobs|Blob[i]|Name"]);
NSLog(@"%@%@",@"Content-Length: ",[xml GetChildContent: @"Blobs|Blob[i]|Properties|Content-Length"]);
NSLog(@"%@%@",@"Content-Type: ",[xml GetChildContent: @"Blobs|Blob[i]|Properties|Content-Type"]);
NSLog(@"%@%@",@"Content-MD5: ",[xml GetChildContent: @"Blobs|Blob[i]|Properties|Content-MD5"]);
NSLog(@"%@%@",@"BlobType: ",[xml GetChildContent: @"Blobs|Blob[i]|Properties|BlobType"]);
NSLog(@"%@%@",@"LeaseStatus: ",[xml GetChildContent: @"Blobs|Blob[i]|Properties|LeaseStatus"]);
[lastMod SetFromRfc822: [xml GetChildContent: @"Blobs|Blob[i]|Properties|Last-Modified"]];
[lastMod ToDtObj: YES dtObj: dt];
NSLog(@"%@%d%@%d%@%d",@"Last-Modified YMD: ",[dt.Year intValue],@",",[dt.Month intValue],@",",[dt.Day intValue]);
i = i + 1;
}
NSLog(@"%@",@"-------------------------");
// Use the ChilkatPath method to get information for a specific blob:
// For example, let's say we want the Last-Modified date/time for
// the blob named "helloWorld.txt"
NSString *lastModStr = [xml ChilkatPath: @"/C/Name,helloWorld.txt|..|Properties|Last-Modified|*"];
NSLog(@"%@%@",@"helloWorld.txt Last-Modified: ",lastModStr);
NSLog(@"%@",@"Success.");
// <?xml version="1.0" encoding="utf-8" ?>
// <EnumerationResults ServiceEndpoint="https://chilkat.blob.core.windows.net/" ContainerName="test">
// <Blobs>
// <Blob>
// <Name>hamletC.xml</Name>
// <Properties>
// <Last-Modified>Mon, 02 May 2016 23:50:30 GMT</Last-Modified>
// <Etag>0x8D372E48B6D323A</Etag>
// <Content-Length>279658</Content-Length>
// <Content-Type>application/octet-stream</Content-Type>
// <Content-Encoding />
// <Content-Language />
// <Content-MD5>4E6prI9haw81xadSLeEj3Q==</Content-MD5>
// <Cache-Control />
// <Content-Disposition>attachment; filename="hamletC.xml"</Content-Disposition>
// <BlobType>BlockBlob</BlobType>
// <LeaseStatus>unlocked</LeaseStatus>
// <LeaseState>available</LeaseState>
// </Properties>
// </Blob>
// <Blob>
// <Name>helloWorld.txt</Name>
// <Properties>
// <Last-Modified>Mon, 02 May 2016 15:21:55 GMT</Last-Modified>
// <Etag>0x8D3729D7EE38299</Etag>
// <Content-Length>12</Content-Length>
// <Content-Type>application/octet-stream</Content-Type>
// <Content-Encoding />
// <Content-Language />
// <Content-MD5>7Qdih1MuhjZehB6Sv8UNjA==</Content-MD5>
// <Cache-Control />
// <Content-Disposition>attachment; filename="helloWorld.txt"</Content-Disposition>
// <BlobType>BlockBlob</BlobType>
// <LeaseStatus>unlocked</LeaseStatus>
// <LeaseState>available</LeaseState>
// </Properties>
// </Blob>
// <Blob>
// <Name>thisIsATest.txt</Name>
// <Properties>
// <Last-Modified>Tue, 03 May 2016 00:22:13 GMT</Last-Modified>
// <Etag>0x8D372E8F9B2A62E</Etag>
// <Content-Length>1600</Content-Length>
// <Content-Type>application/octet-stream</Content-Type>
// <Content-Encoding />
// <Content-Language />
// <Content-MD5>FhgUXYfePg2ItsraPmz0Xg==</Content-MD5>
// <Cache-Control />
// <Content-Disposition>attachment; filename="thisIsATest.txt"</Content-Disposition>
// <BlobType>BlockBlob</BlobType>
// <LeaseStatus>unlocked</LeaseStatus>
// <LeaseState>available</LeaseState>
// </Properties>
// </Blob>
// </Blobs>
// <NextMarker />
// </EnumerationResults>
//