How to use Microsoft.Extensions.Logging.ILogger as class variable in Azure FunctionApp?
1
Question :
How to declare a ILogger as class variable and use them for logging ?
*NOTES : *
I need to develop Azure Function App where TraceWritter is used as default.
While writting UnitTest, TraceWritter is difficult. Instead iam using ILogger.In funtion app , iam passing the log variable to all methods from Initial RUN Method. ( This is not the right way to do this. )
I need to declare ILogger as a class Variable and use them in all places.
so , How to do this.
Sample Code
public class addClass
{
// private static ILogger LOGGER = ---???----- // I need to declare here.
private void add(ILogger log) // Iam using like this. This is not rite way of programming to pass to all methods.
{
int a = 10;
int b=4;
log.LogInformation((a+b));
}
private void addM() // Using the class variable.
{
int a = 10;
int b = 4;
log.LogInformation((a+b));
}
}
Help me out of this. Thanks in advance.
c#
azure azure-functions asked Nov 23 '18 at 5:10
SivabalakrishnanSivabalakrishnan
7812
add a comment |
1
Question :
How to declare a ILogger as class variable and use them for logging ?
*NOTES : *
I need to develop Azure Function App where TraceWritter is used as default.
While writting UnitTest, TraceWritter is difficult. Instead iam using ILogger.In funtion app , iam passing the log variable to all methods from Initial RUN Method. ( This is not the right way to do this. )
I need to declare ILogger as a class Variable and use them in all places.
so , How to do this.
Sample Code
public class addClass
{
// private static ILogger LOGGER = ---???----- // I need to declare here.
private void add(ILogger log) // Iam using like this. This is not rite way of programming to pass to all methods.
{
int a = 10;
int b=4;
log.LogInformation((a+b));
}
private void addM() // Using the class variable.
{
int a = 10;
int b = 4;
log.LogInformation((a+b));
}
}
Help me out of this. Thanks in advance.
c#
azure azure-functions asked Nov 23 '18 at 5:10
SivabalakrishnanSivabalakrishnan
7812
Could you please try initialize the ILogger in the constructor of addClass? like below:ILogger logger; public AddClass(ILogger logger){this.logger = logger;}
– Ivan Yang
Nov 23 '18 at 5:34
ILoggeris an interface, you need an instance of a class that implementsILogger. Presumably that class is calledLogger, so your commented line would be something likeprivate static ILogger LOGGER = new Logger(/*parameters*/);You can then callLOGGER.LogInformation("log message");in any method within the class. Note although your comment says "Using the class variable",logis not a class variable it is a local variable withinadd()and not accessible inaddM.
– iakobski
Nov 23 '18 at 7:34
Ya , I have done this way . But how to unit test this function ? When I write unit-test case , it says "LOG contains null value " . @IvanYang
– Sivabalakrishnan
Nov 23 '18 at 9:46
private static ILogger LOGGER = new Logger(/*parameters*/); I cant get this. @iakobski
– Sivabalakrishnan
Nov 23 '18 at 9:47
can you share some simple demo code? in function and unit test?
– Ivan Yang
Nov 23 '18 at 10:08
add a comment |
1
1
1
1
Question :
How to declare a ILogger as class variable and use them for logging ?
*NOTES : *
I need to develop Azure Function App where TraceWritter is used as default.
While writting UnitTest, TraceWritter is difficult. Instead iam using ILogger.In funtion app , iam passing the log variable to all methods from Initial RUN Method. ( This is not the right way to do this. )
I need to declare ILogger as a class Variable and use them in all places.
so , How to do this.
Sample Code
public class addClass
{
// private static ILogger LOGGER = ---???----- // I need to declare here.
private void add(ILogger log) // Iam using like this. This is not rite way of programming to pass to all methods.
{
int a = 10;
int b=4;
log.LogInformation((a+b));
}
private void addM() // Using the class variable.
{
int a = 10;
int b = 4;
log.LogInformation((a+b));
}
}
Help me out of this. Thanks in advance.
c#
azure azure-functions asked Nov 23 '18 at 5:10
SivabalakrishnanSivabalakrishnan
7812
Question :
How to declare a ILogger as class variable and use them for logging ?
*NOTES : *
I need to develop Azure Function App where TraceWritter is used as default.
While writting UnitTest, TraceWritter is difficult. Instead iam using ILogger.In funtion app , iam passing the log variable to all methods from Initial RUN Method. ( This is not the right way to do this. )
I need to declare ILogger as a class Variable and use them in all places.
so , How to do this.
Sample Code
public class addClass
{
// private static ILogger LOGGER = ---???----- // I need to declare here.
private void add(ILogger log) // Iam using like this. This is not rite way of programming to pass to all methods.
{
int a = 10;
int b=4;
log.LogInformation((a+b));
}
private void addM() // Using the class variable.
{
int a = 10;
int b = 4;
log.LogInformation((a+b));
}
}
Help me out of this. Thanks in advance.
c#
azure azure-functions c#
azure azure-functions asked Nov 23 '18 at 5:10
SivabalakrishnanSivabalakrishnan
7812
asked Nov 23 '18 at 5:10
SivabalakrishnanSivabalakrishnan
7812
asked Nov 23 '18 at 5:10
SivabalakrishnanSivabalakrishnan
7812
asked Nov 23 '18 at 5:10
SivabalakrishnanSivabalakrishnan
7812
asked Nov 23 '18 at 5:10
SivabalakrishnanSivabalakrishnan
7812
7812
Could you please try initialize the ILogger in the constructor of addClass? like below:ILogger logger; public AddClass(ILogger logger){this.logger = logger;}
– Ivan Yang
Nov 23 '18 at 5:34
ILoggeris an interface, you need an instance of a class that implementsILogger. Presumably that class is calledLogger, so your commented line would be something likeprivate static ILogger LOGGER = new Logger(/*parameters*/);You can then callLOGGER.LogInformation("log message");in any method within the class. Note although your comment says "Using the class variable",logis not a class variable it is a local variable withinadd()and not accessible inaddM.
– iakobski
Nov 23 '18 at 7:34
Ya , I have done this way . But how to unit test this function ? When I write unit-test case , it says "LOG contains null value " . @IvanYang
– Sivabalakrishnan
Nov 23 '18 at 9:46
private static ILogger LOGGER = new Logger(/*parameters*/); I cant get this. @iakobski
– Sivabalakrishnan
Nov 23 '18 at 9:47
can you share some simple demo code? in function and unit test?
– Ivan Yang
Nov 23 '18 at 10:08
add a comment |
Could you please try initialize the ILogger in the constructor of addClass? like below:ILogger logger; public AddClass(ILogger logger){this.logger = logger;}
– Ivan Yang
Nov 23 '18 at 5:34
ILoggeris an interface, you need an instance of a class that implementsILogger. Presumably that class is calledLogger, so your commented line would be something likeprivate static ILogger LOGGER = new Logger(/*parameters*/);You can then callLOGGER.LogInformation("log message");in any method within the class. Note although your comment says "Using the class variable",logis not a class variable it is a local variable withinadd()and not accessible inaddM.
– iakobski
Nov 23 '18 at 7:34
Ya , I have done this way . But how to unit test this function ? When I write unit-test case , it says "LOG contains null value " . @IvanYang
– Sivabalakrishnan
Nov 23 '18 at 9:46
private static ILogger LOGGER = new Logger(/*parameters*/); I cant get this. @iakobski
– Sivabalakrishnan
Nov 23 '18 at 9:47
can you share some simple demo code? in function and unit test?
– Ivan Yang
Nov 23 '18 at 10:08
Could you please try initialize the ILogger in the constructor of addClass? like below:
ILogger logger; public AddClass(ILogger logger){this.logger = logger;}– Ivan Yang
Nov 23 '18 at 5:34
Could you please try initialize the ILogger in the constructor of addClass? like below:
ILogger logger; public AddClass(ILogger logger){this.logger = logger;}– Ivan Yang
Nov 23 '18 at 5:34
ILogger is an interface, you need an instance of a class that implements ILogger. Presumably that class is called Logger, so your commented line would be something like private static ILogger LOGGER = new Logger(/*parameters*/); You can then call LOGGER.LogInformation("log message"); in any method within the class. Note although your comment says "Using the class variable", log is not a class variable it is a local variable within add() and not accessible in addM.– iakobski
Nov 23 '18 at 7:34
ILogger is an interface, you need an instance of a class that implements ILogger. Presumably that class is called Logger, so your commented line would be something like private static ILogger LOGGER = new Logger(/*parameters*/); You can then call LOGGER.LogInformation("log message"); in any method within the class. Note although your comment says "Using the class variable", log is not a class variable it is a local variable within add() and not accessible in addM.– iakobski
Nov 23 '18 at 7:34
Ya , I have done this way . But how to unit test this function ? When I write unit-test case , it says "LOG contains null value " . @IvanYang
– Sivabalakrishnan
Nov 23 '18 at 9:46
Ya , I have done this way . But how to unit test this function ? When I write unit-test case , it says "LOG contains null value " . @IvanYang
– Sivabalakrishnan
Nov 23 '18 at 9:46
private static ILogger LOGGER = new Logger(/*parameters*/); I cant get this. @iakobski
– Sivabalakrishnan
Nov 23 '18 at 9:47
private static ILogger LOGGER = new Logger(/*parameters*/); I cant get this. @iakobski
– Sivabalakrishnan
Nov 23 '18 at 9:47
can you share some simple demo code? in function and unit test?
– Ivan Yang
Nov 23 '18 at 10:08
can you share some simple demo code? in function and unit test?
– Ivan Yang
Nov 23 '18 at 10:08
add a comment |
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Could you please try initialize the ILogger in the constructor of addClass? like below:
ILogger logger; public AddClass(ILogger logger){this.logger = logger;}– Ivan Yang
Nov 23 '18 at 5:34
ILoggeris an interface, you need an instance of a class that implementsILogger. Presumably that class is calledLogger, so your commented line would be something likeprivate static ILogger LOGGER = new Logger(/*parameters*/);You can then callLOGGER.LogInformation("log message");in any method within the class. Note although your comment says "Using the class variable",logis not a class variable it is a local variable withinadd()and not accessible inaddM.– iakobski
Nov 23 '18 at 7:34
Ya , I have done this way . But how to unit test this function ? When I write unit-test case , it says "LOG contains null value " . @IvanYang
– Sivabalakrishnan
Nov 23 '18 at 9:46
private static ILogger LOGGER = new Logger(/*parameters*/); I cant get this. @iakobski
– Sivabalakrishnan
Nov 23 '18 at 9:47
can you share some simple demo code? in function and unit test?
– Ivan Yang
Nov 23 '18 at 10:08