We are looking to write a C# function that can return the connection string for an EventHub in our application.
We understand that there is a PowerShell Get-AzEventHubNamespaceKey that can do it, but looking for a C# equivalent.
Any suggestions welcome.
MrHappyhead
To help anybody else out there looking for something like this, it is possible to use the Azure.Management.% namespaces.
For example for an EventHub:
EventHubManagementClient eventHubClient = new EventHubManagementClient(tokenCredentials);
You can then use
AccessKeys accessKeys = await eventHubClient.Namespaces.ListKeysAsync(resourceGroup, eventHubNamespace,authorisationRuleName);
It is better to use the Namespaces as opposed to eventhubs, because the former provides connection strings in the scenario that you are using Geo DR - e.g. you can obtain the Primary/Secondary alias connection strings.
Related
I am trying to build a where clause for an ArcGIS layer query in the ArcGIS JavaScript API. All the examples I can find (including in where documentation) encourage you to do things like this:
query.where = "NAME = '" + stateName + "'";
I find this surprising, because it seems like we are encouraged to write code that's susceptible to SQL injection bugs. This is especially important to me because my "stateName" is entirely not in my control. It's raw user input.
It looks like the library supports query parameterization via the parameterValues property, however I can find no examples on how to use it, or how to format my query so that it uses parameter values. Not even the documentation contains any examples.
So how do we create properly parameterized queries?
Side note: I recognize it's probably the server administrator's job to prevent bad queries from causing harm, however half the reason I'm asking this is also purely to avoid bugs and improperly parsed queries.
According to ESRI, the parameterValues property is only for using Query Layers. It's not for this context.
So the answer is, no, you can't use proper SQL parameterization when you're simply running a query on a layer.
The best way I have found to make your queries at least a little bit more bulletproof is to use code like this:
function sanitizeParameter(value) {
// We need to escape single quotes to avoid messing up SQL syntax.
// So all ' characters need to become ''
return value.split("'").join("''")
}
query.where = "NAME = '" + sanitizeParameter(stateName) + "'";
Using ServiceStack version 4.0.40.
I am trying get RedisSentinel to use the RedisManagerPool instead of the
PooledRedisClientManager so it will allow clients above the client pool size.
I see this in the docs to set this...
sentinel.RedisManagerFactory = (master,slaves) => new RedisManagerPool(master);
I'm not sure how to use this. Do I pass in the master host name? What if I don't know which is master because of a previous failover? I can't sentinel.start() to find out which is master because it will start with the PooledRedisClientManager, which isn't what I want.
Or, do I pass in the sentinel hosts? RedisManagerPool takes a list of hosts, I can pass in the sentinel hosts, but I cannot set it to sentinel.RedisManagerFactory as RedisManagerFactory is not convertible to RedisManagerPool.
I think I am missing something simple here. Any help appreciated.
UPDATE
As per mythz's comment below, this isn't available in version 4.0.40 of ServiceStack. But you can use;
sential.RedisManagerFactory.FactoryFn = (master, slaves) => new RedisManagerPool(master);
Thanks
This is literally the config you need to use to change RedisSentinel to use RedisManagerPool:
sentinel.RedisManagerFactory = (master,slaves) =>
new RedisManagerPool(master);
You don’t need to pass anything else, the master host argument uses the lambda argument.
I am building a REST API which connects to a NEO4J instance. I am using the koa-neo4j library as the basis (https://github.com/assister-ai/koa-neo4j-starter-kit). I am a beginner at all these technologies but thanks to some help from this forum I have the basic functionality working. For example the below code allows me to create a new node with the label "metric" and set the name and dateAdded propertis.
URL:
/metric?metricName=Test&dateAdded=2/21/2017
index.js
app.defineAPI({
method: 'POST',
route: '/api/v1/imm/metric',
cypherQueryFile: './src/api/v1/imm/metric/createMetric.cyp'
});
createMetric.cyp"
CREATE (n:metric {
name: $metricName,
dateAdded: $dateAdded
})
return ID(n) as id
However, I am struggling to know how I can approach more complicated examples. How can I handle situations when I don't know how many properties will be added when creating a new node beforehand or when I want to create multiple nodes in a single post statement. Ideally I would like to be able to pass something like JSON as part of the POST which would contain all of the nodes, labels and properties that I want to create. Is something like this possible? I tried using the below Cypher query and passing a JSON string in the POST body but it didn't work.
UNWIND $props AS properties
CREATE (n:metric)
SET n = properties
RETURN n
Would I be better off switching tothe Neo4j Rest API instead of the BOLT protocol and the KOA-NEO4J framework. From my research I thought it was better to use BOLT but I want to have a Rest API as the middle layer between my front and back end so I am willing to change over if this will be easier in the longer term.
Thanks for the help!
Your Cypher syntax is bad in a couple of ways.
UNWIND only accepts a collection as its argument, not a string.
SET n = properties is only legal if properties is a map, not a string.
This query should work for creating a single node (assuming that $props is a map containing all the properties you want to store with the newly created node):
CREATE (n:metric $props)
RETURN n
If you want to create multiple nodes, then this query (essentially the same as yours) should work (but only if $prop_collection is a collection of maps):
UNWIND $prop_collection AS props
CREATE (n:metric)
SET n = props
RETURN n
I too have faced difficulties when trying to pass complex types as arguments to neo4j, this has to do with type conversions between js and cypher over bolt and there is not much one could do except for filing an issue in the official neo4j JavaScript driver repo. koa-neo4j uses the official driver under the hood.
One way to go about such scenarios in koa-neo4j is using JavaScript to manipulate the arguments before sending to Cypher:
https://github.com/assister-ai/koa-neo4j#preprocess-lifecycle
Also possible to further manipulate the results of a Cypher query using postProcess lifecycle hook:
https://github.com/assister-ai/koa-neo4j#postprocess-lifecycle
I recently realized that DocumentDB supports stand alone update operations via ReplaceDocumentAsync.
I've replaced the Upsert operation below with the Replace operation.
var result = _client
.UpsertDocumentAsync(_collectionUri, docObject)
.Result;
So this is now:
var result = _client
.ReplaceDocumentAsnyc(_collectionUri, docObject)
.Result;
However, now I get the exception:
Microsoft.Azure.Documents.BadRequestException : ResourceType Document is unexpected.
ActivityId: b1b2fd71-3029-4d0d-bd5d-87d8d0a2fc95
No idea why, upsert and replace are of the same vein and the object is the same that worked for upsert, so I would expect it to work without problems.
All help appreciated.
Thanks
Update: Have tried to implement this using the SelfLink approach, and it works for Replace, but selflink does not work with Upsert. The behavior is quite confusing. I don't like that I have to build a self link in code using string concatenation.
I'm afraid that building the selflink with string concatenation is your only option here because ReplaceDocument(...) requires a link to the document. You show a link to the collection in your example. It won't suck the id out and find the document as you might wish.
The NPM module, documentdb-utils, has library functions for building these links but it's just using string concatenation. I have seen an equivalent library for .NET but I can't remember where. Maybe it was in an Azure example or even in the SDK now.
You can build a document link for a replace using the UriFactory helper class:
var result = _client
.ReplaceDocumentAsync(UriFactory.CreateDocumentUri(databaseId, collectionId, docObject.Id), docObject)
.Result;
Unfortunately it's not very intuitive, as Larry has already pointed out, but a replace expects a document to already be there, while an upsert is what it says on the tin. Two different use-cases, I would say.
In order to update a document, you need to provide the Collection Uri. If you provide the Document Uri it returns the following:
ResourceType Document is unexpected.
Maybe the _collectionUri is a Document Uri, the assignment should look like this:
_collectionUri = UriFactory.CreateDocumentCollectionUri(DatabaseName, CollectionName);
Is it possible to apply a function like LookUpRows or Lookup to an array created with BuildRowSetFromString?
I have this:
SET #rowSet = BuildRowSetFromString(#ItemsString2, '|')
I'd like to know if there's a function on which I can do:
SET #var = LookupRows(#rowSet, ITEM_ID, ... )
I am trying already using a FOR loop. I want to know if there's a function that can do this.
No. I wish.
Best bet would be to use arrays in Server-Side JavaScript or possibly GTL.
If you want to over-engineer it, you can use XML and XPATH to do some array functions in AMPScript. I've written up a use-case with examples here on my personal blog.
Also, there is a lot more SFMC dicussion going on over in http://salesforce.stackexchange.com.