I am trying to show the pricing for EC2 instance as a description simply a Tag, I have created a mapping for each instance type and price. But i want to show the price price while creating the stack just on parameter section. I am updating the default value as-
"Price": {
"Description": "Price per hr for the EC2 instances",
"Type": "String",
"Default": "{ "Fn::FindInMap" : [ "Pricing" , { "Ref" : "InstanceType" },"Price"]}"
}
but it is not working , as the Default Value takes String.
Is there any other approach ?
Its not possible, here is what i found from the AWS docs
The value for the description declaration must be a literal string that is between 0 and 1024 bytes in length. You cannot use a parameter or function to specify the description
Reference:
https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/template-description-structure.html
Related
I have a Get Metadata activity which get all child items under a blob container. There are both files and folders but i just need files. So in a filter activity which filter for only items of type = file. This is what I got from the filter activity:
Output
{
"ItemsCount": 4,
"FilteredItemsCount": 3,
"Value": [
{
"name": "BRAND MAPPING.csv",
"type": "File"
},
{
"name": "ChinaBIHRA.csv",
"type": "File"
},
{
"name": "ChinaBIHRA.csv_20201021121500",
"type": "File"
}
]
}
So there is an array of 3 objects being returned. Each object has a name and type properties. I want just the names to be fed to a store procedure activity as a parameter. I have used this expression to try to get a comma separated list as the parameter.
#join(activity('Filter1').output.Value.name, ',')
and got this error:
The expression 'join(activity('Filter1').output.Value.name, ',')' cannot be evaluated because property 'name' cannot be selected. Array elements can only be selected using an integer index.
So how can I achieve this?
You can create For Each activity after Filter activity. Within For Each activity, append file name.
Step:
1.create two variable.
2.Setting of For Each activity
3.Setting of Append Variable activity within For Each activity
4.Setting of Set variable
Use the below codeblock instead
#concat('''',join(json(replace(replace(replace(replace(string(
activity('Filter1').output.Value)
,',"type":"File"','')
,'"name":','')
,'{','')
,'}','')),''','''),'''')
This would forego the use of multiple activities, and you can use the existing framework that you have.
We are using Orion Context Broker as our database.
Recently, We have meet an requirement that user want to find a City by name of this City container a keyword.
For example:
We have city name likes this. Hanoi, Madrid, London, Barcelona, Paris, Lyon.
If user type: "on", we should show Lyon, London.
The city object like this.
{
"type": "City",
"isPattern": "false",
"id": "city1",
"attributes": [
{
"name": "name",
"type": "string",
"value": "London"
}
]
}
So I am wondering if any queryContext filtering can help us to sort out this case.
I have done some research and there is no good sounds on this.
Many thanks.
You can use idPattern in GET /v2/entities which value is a regular expression. Thus the following query:
GET /v2/entities?idPattern=on
should return any City with the "on" substring in its id.
EDIT: if you want to apply a pattern to the value of some attribute, then you have to use q query parameter and the ~= NGSIv2 Simple Query Operator. Something like this:
GET /v2/entities?q=colour~=or
I have figured out that we use ~= operation to do that.
Please see the follow quote.
Match pattern: ~=. The value matches a given pattern, expressed as a regular expression, e.g. color~=ow. For an entity to match, it must contain the target property (color) and the target property value must match the string in the right-hand side, 'ow' in this example (brown and yellow would match, black and white would not). This operation is only valid for target properties of type string.
http://telefonicaid.github.io/fiware-orion/api/v2/stable/
Section: Simple Query Language
Many thanks.
Using the FIWARE PointOfInterest data model I would like to filter by POI category which is an array. For instance
http://130.206.118.244:1027/v2/entities?type=PointOfInterest&options=keyValues&attrs=name,category&limit=100&q=category=="311"
having as entity instances something like
{
"id": "Museum-f85a8c66d617c23d33847f8110341a29",
"type": "PointOfInterest",
"name": "The Giant Squid Centre",
"category":
[
"311"
]
},
{
"id": "Museum-611f228f42c7fbfa4bd58bad94455055",
"type": "PointOfInterest",
"name": "Museo Extremeño e Iberoamericano de Arte Contemporáneo",
"category":
[
"311"
]
},
Looking to the NGSIv2 specification it seems that works in the way you mention:
Single element, e.g. temperature==40. For an entity to match, it must contain the target property (temperature) and the target property value must be the query value (40) (or include the value, in case the target property value is an array).
I mean, in particular the part that says:
...or include the value, in case the target property value is an array.
I'm very new to MongoDB, i tell you sorry for this question but i have a problem to understand how to create a document that can contain a value with different "type:
My document can contain data like this:
// Example ONE
{
"customer" : "aCustomer",
"type": "TYPE_ONE",
"value": "Value here"
}
// Example TWO
{
"customer": "aCustomer",
"type": "TYPE_TWO",
"value": {
"parameter1": "value for parameter one",
"parameter2": "value for parameter two"
}
}
// Example THREE
{
"customer": "aCustomer",
"type": "TYPE_THREE",
"value": {
"anotherParameter": "another value",
{
"someParameter": "value for some parameter",
...
}
}
}
Customer field will be even present, the type can be different (TYPE_ONE, TYPE_TWO and so on), based on the TYPE the value can be a string, an object, an array etc.
Looking this example, i should create three kind of collections (one for type) or the same collection (for example, a collection named "measurements") can contain differend kind of value on the field "value" ?
Trying some insert in my DB instance i dont get any error (i'm able to insert object, string and array on property value), but i would like to know if is the correct way...
I come from RDBMS, i'm a bit confused right now.. thanks a lot for your support.
You can find the answer here https://docs.mongodb.com/drivers/use-cases/product-catalog
MongoDB's dynamic schema means that each need not conform to the same schema.
As I create entities in an Orion server, I can search by ID, as flat or using regular expressions:
http://<localhost>:1026/v1/queryContext
Content:
{
"entities": [
{
"type": "Sensor",
"isPattern": "true",
"id": "sensor_1.*"
}
],
"attributes": ["temperature","humidity"]
}
In the above example I'd get all objects of type "Sensor" whose ID starts with "sensor_1", and their attributes "temperature" and "humidity". I wonder if there is any way that would allow me to search by specific attribute value, for example to get those sensors whose humidity is over "60.2", or this selection must be done over the retrieved data queried by ID.
Not in the current Orion version (0.19.0) but it will be possible in the future. Have a look to the attribute::<name> filter with the = operator in this document.