Abstract: Disclosed techniques relate to tracing a subsidiary thread of a web page application. In an example, a method includes providing a web page application to a web browser. The method further includes creating, from the web page application, a global tracer configured to log tracing data for the web page application and a span. The method further includes instantiating, from the web page application, a wrapper for a subsidiary thread. The wrapper is configured to execute shim code before executing the subsidiary thread. The method further includes passing, from the wrapper to the shim code, configuration data of the global tracer. The method further includes creating a subsidiary tracer from the shim code and the configuration data. The subsidiary tracer configured to log tracing data for the subsidiary thread and a thread span.

Abstract: Disclosed systems relate to propagating tracing across a distributed software application. In an example, an application logs tracing data for a web page from an original server. The application determines, at the web browser, that the web page from the original server requires a request to an external server outside a domain of the original server. The application interrogates the external server to determine whether the external server allows tracing headers in requests. The application updates an allow list, at the web browser, to indicate that the external server allows tracing headers in requests from the original server. The application injects a tracing header in the request based on a result of the interrogation. The application sends, from the web browser to the external server, the request with the tracing header. The external server is configured to log tracing data based on the tracing header.

Abstract: Disclosed systems relate to propagating tracing across a distributed software application. In an example, an application logs tracing data for a web page from an original server. The application determines, at the web browser, that the web page from the original server requires a request to an external server outside a domain of the original server. The application interrogates the external server to determine whether the external server allows tracing headers in requests. The application updates an allow list, at the web browser, to indicate that the external server allows tracing headers in requests from the original server. The application injects a tracing header in the request based on a result of the interrogation. The application sends, from the web browser to the external server, the request with the tracing header. The external server is configured to log tracing data based on the tracing header.

Abstract: Disclosed systems relate to automatically instrumenting a web application for tracing. In an example, a method includes providing a web page application to a web browser on a client device. The web page application includes a tracer application. The method further includes detecting a start of the web page application and instantiating tracer application. The tracer application is configured to log tracing data for the web page application. The method further includes detecting an event initiated by interaction with the web page application. The method further includes automatically logging a start of a span based on the detection, the logging associating the span with the tracer application. The method further includes executing operations corresponding to the event. The method further includes automatically logging an end of the span based upon a completion of the operations corresponding to the event.

Abstract: Disclosed techniques relate to automatically instrumenting a web application. In an aspect, a method identifies that a web application includes an event that is triggered by a user interaction. The method associates the event with a tracer that is configured to log tracing information based on an execution of a first set of operations caused by the event and to obtain a first measurement of performance of a first span. The method identifies, in the code, that the execution of a first set of operations causes a request to be made to a server. The method associates the request with the tracer. The tracer is configured to log tracing information based on an execution of a second set of operations caused by the request and to obtain a second measurement of performance of a second span that is a child span of the first span.

Abstract: Disclosed systems relate to automatically instrumenting a web application for tracing. In an example, a method includes providing a web page application to a web browser on a client device. The web page application includes a tracer application. The method further includes detecting a start of the web page application and instantiating tracer application. The tracer application is configured to log tracing data for the web page application. The method further includes detecting an event initiated by interaction with the web page application. The method further includes automatically logging a start of a span based on the detection, the logging associating the span with the tracer application. The method further includes executing operations corresponding to the event. The method further includes automatically logging an end of the span based upon a completion of the operations corresponding to the event.

Abstract: Disclosed techniques relate to tracing a subsidiary thread of a web page application. In an example, a method includes providing a web page application to a web browser. The method further includes creating, from the web page application, a global tracer configured to log tracing data for the web page application and a span. The method further includes instantiating, from the web page application, a wrapper for a subsidiary thread. The wrapper is configured to execute shim code before executing the subsidiary thread. The method further includes passing, from the wrapper to the shim code, configuration data of the global tracer. The method further includes creating a subsidiary tracer from the shim code and the configuration data. The subsidiary tracer configured to log tracing data for the subsidiary thread and a thread span.

Abstract: Disclosed techniques relate to automatically instrumenting a web application. In an aspect, a method identifies that a web application includes an event that is triggered by a user interaction. The method associates the event with a tracer that is configured to log tracing information based on an execution of a first set of operations caused by the event and to obtain a first measurement of performance of a first span. The method identifies, in the code, that the execution of a first set of operations causes a request to be made to a server. The method associates the request with the tracer. The tracer is configured to log tracing information based on an execution of a second set of operations caused by the request and to obtain a second measurement of performance of a second span that is a child span of the first span.

Abstract: Disclosed techniques relate to tracing a subsidiary thread of a web page application. In an example, a method includes providing a web page application to a web browser. The method further includes creating, from the web page application, a global tracer configured to log tracing data for the web page application and a span. The method further includes instantiating, from the web page application, a wrapper for a subsidiary thread. The wrapper is configured to execute shim code before executing the subsidiary thread. The method further includes passing, from the wrapper to the shim code, configuration data of the global tracer. The method further includes creating a subsidiary tracer from the shim code and the configuration data. The subsidiary tracer configured to log tracing data for the subsidiary thread and a thread span.

Abstract: Disclosed techniques relate to automatically instrumenting a web application. In an aspect, a method identifies that a web application includes an event that is triggered by a user interaction. The method associates the event with a tracer that is configured to log tracing information based on an execution of a first set of operations caused by the event and to obtain a first measurement of performance of a first span. The method identifies, in the code, that the execution of a first set of operations causes a request to be made to a server. The method associates the request with the tracer. The tracer is configured to log tracing information based on an execution of a second set of operations caused by the request and to obtain a second measurement of performance of a second span that is a child span of the first span.

Abstract: Disclosed techniques relate to automatically instrumenting a web application. In an aspect, a method identifies that a web application includes an event that is triggered by a user interaction. The method associates the event with a tracer that is configured to log tracing information based on an execution of a first set of operations caused by the event and to obtain a first measurement of performance of a first span. The method identifies, in the code, that the execution of a first set of operations causes a request to be made to a server. The method associates the request with the tracer. The tracer is configured to log tracing information based on an execution of a second set of operations caused by the request and to obtain a second measurement of performance of a second span that is a child span of the first span.

Abstract: Disclosed techniques relate to automatically instrumenting a web application. In an aspect, a method identifies that a web application includes an event that is triggered by a user interaction. The method associates the event with a tracer that is configured to log tracing information based on an execution of a first set of operations caused by the event and to obtain a first measurement of performance of a first span. The method identifies, in the code, that the execution of a first set of operations causes a request to be made to a server. The method associates the request with the tracer. The tracer is configured to log tracing information based on an execution of a second set of operations caused by the request and to obtain a second measurement of performance of a second span that is a child span of the first span.

Abstract: Disclosed techniques relate to automatically instrumenting a web application. In an aspect, a method identifies that a web application includes an event that is triggered by a user interaction. The method associates the event with a tracer that is configured to log tracing information based on an execution of a first set of operations caused by the event and to obtain a first measurement of performance of a first span. The method identifies, in the code, that the execution of a first set of operations causes a request to be made to a server. The method associates the request with the tracer. The tracer is configured to log tracing information based on an execution of a second set of operations caused by the request and to obtain a second measurement of performance of a second span that is a child span of the first span.

Abstract: Disclosed techniques relate to tracing a subsidiary thread of a web page application. In an example, a method includes providing a web page application to a web browser on a client device. The method further includes creating, from the web page application, a global tracer configured to log tracing data for the web page application and a span. The method further includes instantiating, from the web page application, a wrapper for a subsidiary thread. The wrapper is configured to execute shim code before executing the subsidiary thread. The method further includes passing, from the wrapper to the shim code, configuration data of the global tracer. The method further includes creating a subsidiary tracer from the shim code and the configuration data.

Abstract: Disclosed systems relate to automatically instrumenting a web application for tracing. In an example, a method includes providing a web page application to a web browser on a client device. The web page application includes a tracer application. The method further includes detecting a start of the web page application and instantiating tracer application. The tracer application is configured to log tracing data for the web page application. The method further includes detecting an event initiated by interaction with the web page application. The method further includes automatically logging a start of a span based on the detection, the logging associating the span with the tracer application. The method further includes executing operations corresponding to the event. The method further includes automatically logging an end of the span based upon a completion of the operations corresponding to the event.

Abstract: Disclosed systems relate to propagating tracing across a distributed software application. In an example, an application logs tracing data for a web page from an original server. The application determines, at the web browser, that the web page from the original server requires a request to an external server outside a domain of the original server. The application interrogates the external server to determine whether the external server allows tracing headers in requests. The application updates an allow list, at the web browser, to indicate that the external server allows tracing headers in requests from the original server. The application injects a tracing header in the request based on a result of the interrogation. The application sends, from the web browser to the external server, the request with the tracing header. The external server is configured to log tracing data based on the tracing header.

Abstract: A system that pushes active data to a client receives a first request for a page that includes active data from the client. The active data includes a component and a corresponding model for a data source of the component. The system determines if the model is active and if so, instantiates an encoder that corresponds to the component. The system queries the model for the active data and renders a user interface representation of the data. The system then returns a response to the request with the user interface representation.

Abstract: A system that pushes active data to a client receives a first request for a page that includes active data from the client. The active data includes a component and a corresponding model for a data source of the component. The system determines if the model is active and if so, instantiates an encoder that corresponds to the component. The system queries the model for the active data and renders a user interface representation of the data. The system then returns a response to the request with the user interface representation.