telemetry.internal.backends.chrome_inspector.devtools_client_backend | index telemetry/internal/backends/chrome_inspector/devtools_client_backend.py

`# Copyright 2014 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.`

Modules
`` |  |
telemetry.internal.backends.browser_backend telemetry.internal.platform.tracing_agent.chrome_tracing_agent telemetry.internal.platform.tracing_agent.chrome_tracing_devtools_manager telemetry.decorators | telemetry.internal.backends.chrome_inspector.devtools_http telemetry.core.exceptions telemetry.internal.backends.chrome_inspector.inspector_backend telemetry.internal.backends.chrome_inspector.inspector_websocket | logging telemetry.internal.backends.chrome_inspector.memory_backend re socket | sys telemetry.timeline.trace_data telemetry.internal.backends.chrome_inspector.tracing_backend telemetry.internal.backends.chrome_inspector.websocket

Classes
`` |  | __builtin__.object DevToolsClientBackend telemetry.core.exceptions.Error(exceptions.Exception) TabNotFoundError
class DevToolsClientBackend(__builtin__.object)
`` | `An object that communicates with Chrome's devtools. This class owns a map of InspectorBackends. It is responsible for creating them and destroying them.`
| Methods defined here: ActivateTab(self, tab_id, timeout) `Activates the tab with the given id. Raises: devtools_http.DevToolsClientConnectionError TabNotFoundError` Close(self) CloseTab(self, tab_id, timeout) `Closes the tab with the given id. Raises: devtools_http.DevToolsClientConnectionError TabNotFoundError` DumpMemory(self, timeout=30) `Dumps memory. Returns: GUID of the generated dump if successful, None otherwise. Raises: TracingTimeoutException: If more than |timeout| seconds has passed since the last time any data is received. TracingUnrecoverableException: If there is a websocket error. TracingUnexpectedResponseException: If the response contains an error or does not contain the expected result.` GetChromeBranchNumber(*args, **kwargs) GetUpdatedInspectableContexts(self) `Returns an updated instance of _DevToolsContextMapBackend.` GetUrl(self, tab_id) `Returns the URL of the tab with |tab_id|, as reported by devtools. Raises: devtools_http.DevToolsClientConnectionError` IsAlive(self) `Whether the DevTools server is available and connectable.` IsChromeTracingSupported(self) IsInspectable(self, tab_id) `Whether the tab with |tab_id| is inspectable, as reported by devtools. Raises: devtools_http.DevToolsClientConnectionError` RequestNewTab(self, timeout) `Creates a new tab. Returns: A JSON string as returned by DevTools. Example: { "description": "", "devtoolsFrontendUrl": "/devtools/inspector.html?ws=host:port/devtools/page/id-string", "id": "id-string", "title": "Page Title", "type": "page", "url": "url", "webSocketDebuggerUrl": "ws://host:port/devtools/page/id-string" } Raises: devtools_http.DevToolsClientConnectionError` SetMemoryPressureNotificationsSuppressed(self, suppressed, timeout=30) `Enable/disable suppressing memory pressure notifications. Args: suppressed: If true, memory pressure notifications will be suppressed. timeout: The timeout in seconds. Raises: MemoryTimeoutException: If more than |timeout| seconds has passed since the last time any data is received. MemoryUnrecoverableException: If there is a websocket error. MemoryUnexpectedResponseException: If the response contains an error or does not contain the expected result.` SimulateMemoryPressureNotification(self, pressure_level, timeout=30) `Simulate a memory pressure notification. Args: pressure level: The memory pressure level of the notification ('moderate' or 'critical'). timeout: The timeout in seconds. Raises: MemoryTimeoutException: If more than |timeout| seconds has passed since the last time any data is received. MemoryUnrecoverableException: If there is a websocket error. MemoryUnexpectedResponseException: If the response contains an error or does not contain the expected result.` StartChromeTracing(self, trace_options, custom_categories=None, timeout=10) `Args: trace_options: An tracing_options.TracingOptions instance. custom_categories: An optional string containing a list of comma separated categories that will be traced instead of the default category set. Example: use "webkit,cc,disabled-by-default-cc.debug" to trace only those three event categories.` StopChromeTracing(self, trace_data_builder, timeout=30) __init__(self, devtools_port, remote_devtools_port, app_backend) `Creates a new DevToolsClientBackend. A DevTools agent must exist on the given devtools_port. Args: devtools_port: The port to use to connect to DevTools agent. remote_devtools_port: In some cases (e.g., app running on Android device, devtools_port is the forwarded port on the host platform. We also need to know the remote_devtools_port so that we can uniquely identify the DevTools agent. app_backend: For the app that contains the DevTools agent.` Data descriptors defined here: __dict__ `dictionary for instance variables (if defined)` __weakref__ `list of weak references to the object (if defined)` is_tracing_running remote_port support_startup_tracing supports_overriding_memory_pressure_notifications supports_tracing
class TabNotFoundError(telemetry.core.exceptions.Error)
`` |  | Method resolution order: TabNotFoundError telemetry.core.exceptions.Error exceptions.Exception exceptions.BaseException __builtin__.object Methods inherited from telemetry.core.exceptions.Error: AddDebuggingMessage(self, msg) `Adds a message to the description of the exception. Many Telemetry exceptions arise from failures in another application. These failures are difficult to pinpoint. This method allows Telemetry classes to append useful debugging information to the exception. This method also logs information about the location from where it was called.` __init__(self, msg='') __str__(self) Data descriptors inherited from telemetry.core.exceptions.Error: __weakref__ `list of weak references to the object (if defined)` Data and other attributes inherited from exceptions.Exception: __new__ = <built-in method __new__ of type object> `T.__new__(S, ...) -> a new object with type S, a subtype of T` Methods inherited from exceptions.BaseException: __delattr__(...) `x.__delattr__('name') <==> del x.name` __getattribute__(...) `x.__getattribute__('name') <==> x.name` __getitem__(...) `x.__getitem__(y) <==> x[y]` __getslice__(...) `x.__getslice__(i, j) <==> x[i:j] Use of negative indices is not supported.` __reduce__(...) __repr__(...) `x.__repr__() <==> repr(x)` __setattr__(...) `x.__setattr__('name', value) <==> x.name = value` __setstate__(...) __unicode__(...) Data descriptors inherited from exceptions.BaseException: __dict__ args message

Functions
`` |  | IsDevToolsAgentAvailable(port, app_backend) `Returns True if a DevTools agent is available on the given port.`

Data
`` |  | BROWSER_INSPECTOR_WEBSOCKET_URL = 'ws://127.0.0.1:%i/devtools/browser'