public interface AWSLogs
You can use Amazon CloudWatch Logs to monitor, store, and access your log files from Amazon Elastic Compute Cloud (Amazon EC2) instances, Amazon CloudTrail, or other sources. You can then retrieve the associated log data from CloudWatch Logs using the Amazon CloudWatch console, the CloudWatch Logs commands in the AWS CLI, the CloudWatch Logs API, or the CloudWatch Logs SDK.
You can use CloudWatch Logs to:
Monitor Logs from Amazon EC2 Instances in Real-time: You can use CloudWatch Logs to monitor applications and systems using log data. For example, CloudWatch Logs can track the number of errors that occur in your application logs and send you a notification whenever the rate of errors exceeds a threshold you specify. CloudWatch Logs uses your log data for monitoring; so, no code changes are required. For example, you can monitor application logs for specific literal terms (such as "NullReferenceException") or count the number of occurrences of a literal term at a particular position in log data (such as "404" status codes in an Apache access log). When the term you are searching for is found, CloudWatch Logs reports the data to a Amazon CloudWatch metric that you specify.
Monitor Amazon CloudTrail Logged Events: You can create alarms in Amazon CloudWatch and receive notifications of particular API activity as captured by CloudTrail and use the notification to perform troubleshooting.
Archive Log Data: You can use CloudWatch Logs to store your log data in highly durable storage. You can change the log retention setting so that any log events older than this setting are automatically deleted. The CloudWatch Logs agent makes it easy to quickly send both rotated and non-rotated log data off of a host and into the log service. You can then access the raw log data when you need it.
Modifier and Type | Field and Description |
---|---|
static String |
ENDPOINT_PREFIX
The region metadata service name for computing region endpoints.
|
Modifier and Type | Method and Description |
---|---|
CancelExportTaskResult |
cancelExportTask(CancelExportTaskRequest cancelExportTaskRequest)
Cancels an export task if it is in
PENDING or
RUNNING state. |
CreateExportTaskResult |
createExportTask(CreateExportTaskRequest createExportTaskRequest)
Creates an
ExportTask which allows you to efficiently export
data from a Log Group to your Amazon S3 bucket. |
CreateLogGroupResult |
createLogGroup(CreateLogGroupRequest createLogGroupRequest)
Creates a new log group with the specified name.
|
CreateLogStreamResult |
createLogStream(CreateLogStreamRequest createLogStreamRequest)
Creates a new log stream in the specified log group.
|
DeleteDestinationResult |
deleteDestination(DeleteDestinationRequest deleteDestinationRequest)
Deletes the destination with the specified name and eventually disables
all the subscription filters that publish to it.
|
DeleteLogGroupResult |
deleteLogGroup(DeleteLogGroupRequest deleteLogGroupRequest)
Deletes the log group with the specified name and permanently deletes all
the archived log events associated with it.
|
DeleteLogStreamResult |
deleteLogStream(DeleteLogStreamRequest deleteLogStreamRequest)
Deletes a log stream and permanently deletes all the archived log events
associated with it.
|
DeleteMetricFilterResult |
deleteMetricFilter(DeleteMetricFilterRequest deleteMetricFilterRequest)
Deletes a metric filter associated with the specified log group.
|
DeleteRetentionPolicyResult |
deleteRetentionPolicy(DeleteRetentionPolicyRequest deleteRetentionPolicyRequest)
Deletes the retention policy of the specified log group.
|
DeleteSubscriptionFilterResult |
deleteSubscriptionFilter(DeleteSubscriptionFilterRequest deleteSubscriptionFilterRequest)
Deletes a subscription filter associated with the specified log group.
|
DescribeDestinationsResult |
describeDestinations()
Simplified method form for invoking the DescribeDestinations operation.
|
DescribeDestinationsResult |
describeDestinations(DescribeDestinationsRequest describeDestinationsRequest)
Returns all the destinations that are associated with the AWS account
making the request.
|
DescribeExportTasksResult |
describeExportTasks(DescribeExportTasksRequest describeExportTasksRequest)
Returns all the export tasks that are associated with the AWS account
making the request.
|
DescribeLogGroupsResult |
describeLogGroups()
Simplified method form for invoking the DescribeLogGroups operation.
|
DescribeLogGroupsResult |
describeLogGroups(DescribeLogGroupsRequest describeLogGroupsRequest)
Returns all the log groups that are associated with the AWS account
making the request.
|
DescribeLogStreamsResult |
describeLogStreams(DescribeLogStreamsRequest describeLogStreamsRequest)
Returns all the log streams that are associated with the specified log
group.
|
DescribeMetricFiltersResult |
describeMetricFilters(DescribeMetricFiltersRequest describeMetricFiltersRequest)
Returns all the metrics filters associated with the specified log group.
|
DescribeSubscriptionFiltersResult |
describeSubscriptionFilters(DescribeSubscriptionFiltersRequest describeSubscriptionFiltersRequest)
Returns all the subscription filters associated with the specified log
group.
|
FilterLogEventsResult |
filterLogEvents(FilterLogEventsRequest filterLogEventsRequest)
Retrieves log events, optionally filtered by a filter pattern from the
specified log group.
|
ResponseMetadata |
getCachedResponseMetadata(AmazonWebServiceRequest request)
Returns additional metadata for a previously executed successful request,
typically used for debugging issues where a service isn't acting as
expected.
|
GetLogEventsResult |
getLogEvents(GetLogEventsRequest getLogEventsRequest)
Retrieves log events from the specified log stream.
|
PutDestinationResult |
putDestination(PutDestinationRequest putDestinationRequest)
Creates or updates a
Destination . |
PutDestinationPolicyResult |
putDestinationPolicy(PutDestinationPolicyRequest putDestinationPolicyRequest)
Creates or updates an access policy associated with an existing
Destination . |
PutLogEventsResult |
putLogEvents(PutLogEventsRequest putLogEventsRequest)
Uploads a batch of log events to the specified log stream.
|
PutMetricFilterResult |
putMetricFilter(PutMetricFilterRequest putMetricFilterRequest)
Creates or updates a metric filter and associates it with the specified
log group.
|
PutRetentionPolicyResult |
putRetentionPolicy(PutRetentionPolicyRequest putRetentionPolicyRequest)
Sets the retention of the specified log group.
|
PutSubscriptionFilterResult |
putSubscriptionFilter(PutSubscriptionFilterRequest putSubscriptionFilterRequest)
Creates or updates a subscription filter and associates it with the
specified log group.
|
void |
setEndpoint(String endpoint)
Overrides the default endpoint for this client
("https://logs.us-east-1.amazonaws.com").
|
void |
setRegion(Region region)
An alternative to
setEndpoint(String) , sets the regional
endpoint for this client's service calls. |
void |
shutdown()
Shuts down this client object, releasing any resources that might be held
open.
|
TestMetricFilterResult |
testMetricFilter(TestMetricFilterRequest testMetricFilterRequest)
Tests the filter pattern of a metric filter against a sample of log event
messages.
|
static final String ENDPOINT_PREFIX
void setEndpoint(String endpoint)
Callers can pass in just the endpoint (ex:
"logs.us-east-1.amazonaws.com") or a full URL, including the protocol
(ex: "https://logs.us-east-1.amazonaws.com"). If the protocol is not
specified here, the default protocol from this client's
ClientConfiguration
will be used, which by default is HTTPS.
For more information on using AWS regions with the AWS SDK for Java, and a complete list of all available endpoints for all AWS services, see: http://developer.amazonwebservices.com/connect/entry.jspa?externalID= 3912
This method is not threadsafe. An endpoint should be configured when the client is created and before any service requests are made. Changing it afterwards creates inevitable race conditions for any service requests in transit or retrying.
endpoint
- The endpoint (ex: "logs.us-east-1.amazonaws.com") or a full URL,
including the protocol (ex:
"https://logs.us-east-1.amazonaws.com") of the region specific AWS
endpoint this client will communicate with.void setRegion(Region region)
setEndpoint(String)
, sets the regional
endpoint for this client's service calls. Callers can use this method to
control which AWS region they want to work with.
By default, all service endpoints in all regions use the https protocol.
To use http instead, specify it in the ClientConfiguration
supplied at construction.
This method is not threadsafe. A region should be configured when the client is created and before any service requests are made. Changing it afterwards creates inevitable race conditions for any service requests in transit or retrying.
region
- The region this client will communicate with. See
Region.getRegion(com.amazonaws.regions.Regions)
for
accessing a given region. Must not be null and must be a region
where the service is available.Region.getRegion(com.amazonaws.regions.Regions)
,
Region.createClient(Class,
com.amazonaws.auth.AWSCredentialsProvider, ClientConfiguration)
,
Region.isServiceSupported(String)
CancelExportTaskResult cancelExportTask(CancelExportTaskRequest cancelExportTaskRequest)
Cancels an export task if it is in PENDING
or
RUNNING
state.
cancelExportTaskRequest
- InvalidParameterException
- Returned if a parameter of the request is incorrectly specified.ResourceNotFoundException
- Returned if the specified resource does not exist.InvalidOperationException
- Returned if the operation is not valid on the specified resourceServiceUnavailableException
- Returned if the service cannot complete the request.CreateExportTaskResult createExportTask(CreateExportTaskRequest createExportTaskRequest)
Creates an ExportTask
which allows you to efficiently export
data from a Log Group to your Amazon S3 bucket.
This is an asynchronous call. If all the required information is
provided, this API will initiate an export task and respond with the task
Id. Once started, DescribeExportTasks
can be used to get the
status of an export task. You can only have one active (
RUNNING
or PENDING
) export task at a time, per
account.
You can export logs from multiple log groups or multiple time ranges to the same Amazon S3 bucket. To separate out log data for each export task, you can specify a prefix that will be used as the Amazon S3 key prefix for all exported objects.
createExportTaskRequest
- InvalidParameterException
- Returned if a parameter of the request is incorrectly specified.LimitExceededException
- Returned if you have reached the maximum number of resources that
can be created.OperationAbortedException
- Returned if multiple requests to update the same resource were in
conflict.ServiceUnavailableException
- Returned if the service cannot complete the request.ResourceNotFoundException
- Returned if the specified resource does not exist.ResourceAlreadyExistsException
- Returned if the specified resource already exists.CreateLogGroupResult createLogGroup(CreateLogGroupRequest createLogGroupRequest)
Creates a new log group with the specified name. The name of the log group must be unique within a region for an AWS account. You can create up to 500 log groups per account.
You must use the following guidelines when naming a log group:
createLogGroupRequest
- InvalidParameterException
- Returned if a parameter of the request is incorrectly specified.ResourceAlreadyExistsException
- Returned if the specified resource already exists.LimitExceededException
- Returned if you have reached the maximum number of resources that
can be created.OperationAbortedException
- Returned if multiple requests to update the same resource were in
conflict.ServiceUnavailableException
- Returned if the service cannot complete the request.CreateLogStreamResult createLogStream(CreateLogStreamRequest createLogStreamRequest)
Creates a new log stream in the specified log group. The name of the log stream must be unique within the log group. There is no limit on the number of log streams that can exist in a log group.
You must use the following guidelines when naming a log stream:
createLogStreamRequest
- InvalidParameterException
- Returned if a parameter of the request is incorrectly specified.ResourceAlreadyExistsException
- Returned if the specified resource already exists.ResourceNotFoundException
- Returned if the specified resource does not exist.ServiceUnavailableException
- Returned if the service cannot complete the request.DeleteDestinationResult deleteDestination(DeleteDestinationRequest deleteDestinationRequest)
Deletes the destination with the specified name and eventually disables all the subscription filters that publish to it. This will not delete the physical resource encapsulated by the destination.
deleteDestinationRequest
- InvalidParameterException
- Returned if a parameter of the request is incorrectly specified.ResourceNotFoundException
- Returned if the specified resource does not exist.OperationAbortedException
- Returned if multiple requests to update the same resource were in
conflict.ServiceUnavailableException
- Returned if the service cannot complete the request.DeleteLogGroupResult deleteLogGroup(DeleteLogGroupRequest deleteLogGroupRequest)
Deletes the log group with the specified name and permanently deletes all the archived log events associated with it.
deleteLogGroupRequest
- InvalidParameterException
- Returned if a parameter of the request is incorrectly specified.ResourceNotFoundException
- Returned if the specified resource does not exist.OperationAbortedException
- Returned if multiple requests to update the same resource were in
conflict.ServiceUnavailableException
- Returned if the service cannot complete the request.DeleteLogStreamResult deleteLogStream(DeleteLogStreamRequest deleteLogStreamRequest)
Deletes a log stream and permanently deletes all the archived log events associated with it.
deleteLogStreamRequest
- InvalidParameterException
- Returned if a parameter of the request is incorrectly specified.ResourceNotFoundException
- Returned if the specified resource does not exist.OperationAbortedException
- Returned if multiple requests to update the same resource were in
conflict.ServiceUnavailableException
- Returned if the service cannot complete the request.DeleteMetricFilterResult deleteMetricFilter(DeleteMetricFilterRequest deleteMetricFilterRequest)
Deletes a metric filter associated with the specified log group.
deleteMetricFilterRequest
- InvalidParameterException
- Returned if a parameter of the request is incorrectly specified.ResourceNotFoundException
- Returned if the specified resource does not exist.OperationAbortedException
- Returned if multiple requests to update the same resource were in
conflict.ServiceUnavailableException
- Returned if the service cannot complete the request.DeleteRetentionPolicyResult deleteRetentionPolicy(DeleteRetentionPolicyRequest deleteRetentionPolicyRequest)
Deletes the retention policy of the specified log group. Log events would not expire if they belong to log groups without a retention policy.
deleteRetentionPolicyRequest
- InvalidParameterException
- Returned if a parameter of the request is incorrectly specified.ResourceNotFoundException
- Returned if the specified resource does not exist.OperationAbortedException
- Returned if multiple requests to update the same resource were in
conflict.ServiceUnavailableException
- Returned if the service cannot complete the request.DeleteSubscriptionFilterResult deleteSubscriptionFilter(DeleteSubscriptionFilterRequest deleteSubscriptionFilterRequest)
Deletes a subscription filter associated with the specified log group.
deleteSubscriptionFilterRequest
- InvalidParameterException
- Returned if a parameter of the request is incorrectly specified.ResourceNotFoundException
- Returned if the specified resource does not exist.OperationAbortedException
- Returned if multiple requests to update the same resource were in
conflict.ServiceUnavailableException
- Returned if the service cannot complete the request.DescribeDestinationsResult describeDestinations(DescribeDestinationsRequest describeDestinationsRequest)
Returns all the destinations that are associated with the AWS account making the request. The list returned in the response is ASCII-sorted by destination name.
By default, this operation returns up to 50 destinations. If there are
more destinations to list, the response would contain a
nextToken
value in the response body. You can
also limit the number of destinations returned in the response by
specifying the limit
parameter in the request.
describeDestinationsRequest
- InvalidParameterException
- Returned if a parameter of the request is incorrectly specified.ServiceUnavailableException
- Returned if the service cannot complete the request.DescribeDestinationsResult describeDestinations()
DescribeExportTasksResult describeExportTasks(DescribeExportTasksRequest describeExportTasksRequest)
Returns all the export tasks that are associated with the AWS account
making the request. The export tasks can be filtered based on
TaskId
or TaskStatus
.
By default, this operation returns up to 50 export tasks that satisfy the
specified filters. If there are more export tasks to list, the response
would contain a nextToken
value in the response
body. You can also limit the number of export tasks returned in the
response by specifying the limit
parameter in
the request.
describeExportTasksRequest
- InvalidParameterException
- Returned if a parameter of the request is incorrectly specified.ServiceUnavailableException
- Returned if the service cannot complete the request.DescribeLogGroupsResult describeLogGroups(DescribeLogGroupsRequest describeLogGroupsRequest)
Returns all the log groups that are associated with the AWS account making the request. The list returned in the response is ASCII-sorted by log group name.
By default, this operation returns up to 50 log groups. If there are more
log groups to list, the response would contain a
nextToken
value in the response body. You can
also limit the number of log groups returned in the response by
specifying the limit
parameter in the request.
describeLogGroupsRequest
- InvalidParameterException
- Returned if a parameter of the request is incorrectly specified.ServiceUnavailableException
- Returned if the service cannot complete the request.DescribeLogGroupsResult describeLogGroups()
DescribeLogStreamsResult describeLogStreams(DescribeLogStreamsRequest describeLogStreamsRequest)
Returns all the log streams that are associated with the specified log group. The list returned in the response is ASCII-sorted by log stream name.
By default, this operation returns up to 50 log streams. If there are
more log streams to list, the response would contain a
nextToken
value in the response body. You can
also limit the number of log streams returned in the response by
specifying the limit
parameter in the request.
This operation has a limit of five transactions per second, after which
transactions are throttled.
describeLogStreamsRequest
- InvalidParameterException
- Returned if a parameter of the request is incorrectly specified.ResourceNotFoundException
- Returned if the specified resource does not exist.ServiceUnavailableException
- Returned if the service cannot complete the request.DescribeMetricFiltersResult describeMetricFilters(DescribeMetricFiltersRequest describeMetricFiltersRequest)
Returns all the metrics filters associated with the specified log group. The list returned in the response is ASCII-sorted by filter name.
By default, this operation returns up to 50 metric filters. If there are
more metric filters to list, the response would contain a
nextToken
value in the response body. You can
also limit the number of metric filters returned in the response by
specifying the limit
parameter in the request.
describeMetricFiltersRequest
- InvalidParameterException
- Returned if a parameter of the request is incorrectly specified.ResourceNotFoundException
- Returned if the specified resource does not exist.ServiceUnavailableException
- Returned if the service cannot complete the request.DescribeSubscriptionFiltersResult describeSubscriptionFilters(DescribeSubscriptionFiltersRequest describeSubscriptionFiltersRequest)
Returns all the subscription filters associated with the specified log group. The list returned in the response is ASCII-sorted by filter name.
By default, this operation returns up to 50 subscription filters. If
there are more subscription filters to list, the response would contain a
nextToken
value in the response body. You can
also limit the number of subscription filters returned in the response by
specifying the limit
parameter in the request.
describeSubscriptionFiltersRequest
- InvalidParameterException
- Returned if a parameter of the request is incorrectly specified.ResourceNotFoundException
- Returned if the specified resource does not exist.ServiceUnavailableException
- Returned if the service cannot complete the request.FilterLogEventsResult filterLogEvents(FilterLogEventsRequest filterLogEventsRequest)
Retrieves log events, optionally filtered by a filter pattern from the
specified log group. You can provide an optional time range to filter the
results on the event timestamp
. You can limit
the streams searched to an explicit list of
logStreamNames
.
By default, this operation returns as much matching log events as can fit
in a response size of 1MB, up to 10,000 log events, or all the events
found within a time-bounded scan window. If the response includes a
nextToken
, then there is more data to search,
and the search can be resumed with a new request providing the nextToken.
The response will contain a list of
searchedLogStreams
that contains information
about which streams were searched in the request and whether they have
been searched completely or require further pagination. The
limit
parameter in the request. can be used to
specify the maximum number of events to return in a page.
filterLogEventsRequest
- InvalidParameterException
- Returned if a parameter of the request is incorrectly specified.ResourceNotFoundException
- Returned if the specified resource does not exist.ServiceUnavailableException
- Returned if the service cannot complete the request.GetLogEventsResult getLogEvents(GetLogEventsRequest getLogEventsRequest)
Retrieves log events from the specified log stream. You can provide an
optional time range to filter the results on the event
timestamp
.
By default, this operation returns as much log events as can fit in a
response size of 1MB, up to 10,000 log events. The response will always
include a nextForwardToken
and a
nextBackwardToken
in the response body. You can
use any of these tokens in subsequent
GetLogEvents
requests to paginate through
events in either forward or backward direction. You can also limit the
number of log events returned in the response by specifying the
limit
parameter in the request.
getLogEventsRequest
- InvalidParameterException
- Returned if a parameter of the request is incorrectly specified.ResourceNotFoundException
- Returned if the specified resource does not exist.ServiceUnavailableException
- Returned if the service cannot complete the request.PutDestinationResult putDestination(PutDestinationRequest putDestinationRequest)
Creates or updates a Destination
. A destination encapsulates
a physical resource (such as a Kinesis stream) and allows you to
subscribe to a real-time stream of log events of a different account,
ingested through PutLogEvents
requests.
Currently, the only supported physical resource is a Amazon Kinesis
stream belonging to the same account as the destination.
A destination controls what is written to its Amazon Kinesis stream
through an access policy. By default, PutDestination does not set any
access policy with the destination, which means a cross-account user will
not be able to call PutSubscriptionFilter
against this
destination. To enable that, the destination owner must call
PutDestinationPolicy
after PutDestination.
putDestinationRequest
- InvalidParameterException
- Returned if a parameter of the request is incorrectly specified.OperationAbortedException
- Returned if multiple requests to update the same resource were in
conflict.ServiceUnavailableException
- Returned if the service cannot complete the request.PutDestinationPolicyResult putDestinationPolicy(PutDestinationPolicyRequest putDestinationPolicyRequest)
Creates or updates an access policy associated with an existing
Destination
. An access policy is an IAM policy document that is used to authorize claims to register a
subscription filter against a given destination.
putDestinationPolicyRequest
- InvalidParameterException
- Returned if a parameter of the request is incorrectly specified.OperationAbortedException
- Returned if multiple requests to update the same resource were in
conflict.ServiceUnavailableException
- Returned if the service cannot complete the request.PutLogEventsResult putLogEvents(PutLogEventsRequest putLogEventsRequest)
Uploads a batch of log events to the specified log stream.
Every PutLogEvents request must include the
sequenceToken
obtained from the response of the
previous request. An upload in a newly created log stream does not
require a sequenceToken
.
The batch of events must satisfy the following constraints:
timestamp
.putLogEventsRequest
- InvalidParameterException
- Returned if a parameter of the request is incorrectly specified.InvalidSequenceTokenException
DataAlreadyAcceptedException
ResourceNotFoundException
- Returned if the specified resource does not exist.OperationAbortedException
- Returned if multiple requests to update the same resource were in
conflict.ServiceUnavailableException
- Returned if the service cannot complete the request.PutMetricFilterResult putMetricFilter(PutMetricFilterRequest putMetricFilterRequest)
Creates or updates a metric filter and associates it with the specified
log group. Metric filters allow you to configure rules to extract metric
data from log events ingested through
PutLogEvents
requests.
The maximum number of metric filters that can be associated with a log group is 100.
putMetricFilterRequest
- InvalidParameterException
- Returned if a parameter of the request is incorrectly specified.ResourceNotFoundException
- Returned if the specified resource does not exist.OperationAbortedException
- Returned if multiple requests to update the same resource were in
conflict.LimitExceededException
- Returned if you have reached the maximum number of resources that
can be created.ServiceUnavailableException
- Returned if the service cannot complete the request.PutRetentionPolicyResult putRetentionPolicy(PutRetentionPolicyRequest putRetentionPolicyRequest)
Sets the retention of the specified log group. A retention policy allows you to configure the number of days you want to retain log events in the specified log group.
putRetentionPolicyRequest
- InvalidParameterException
- Returned if a parameter of the request is incorrectly specified.ResourceNotFoundException
- Returned if the specified resource does not exist.OperationAbortedException
- Returned if multiple requests to update the same resource were in
conflict.ServiceUnavailableException
- Returned if the service cannot complete the request.PutSubscriptionFilterResult putSubscriptionFilter(PutSubscriptionFilterRequest putSubscriptionFilterRequest)
Creates or updates a subscription filter and associates it with the
specified log group. Subscription filters allow you to subscribe to a
real-time stream of log events ingested through
PutLogEvents
requests and have them delivered
to a specific destination. Currently, the supported destinations are:
Destination
)
belonging to a different account, for cross-account delivery.Currently there can only be one subscription filter associated with a log group.
putSubscriptionFilterRequest
- InvalidParameterException
- Returned if a parameter of the request is incorrectly specified.ResourceNotFoundException
- Returned if the specified resource does not exist.OperationAbortedException
- Returned if multiple requests to update the same resource were in
conflict.LimitExceededException
- Returned if you have reached the maximum number of resources that
can be created.ServiceUnavailableException
- Returned if the service cannot complete the request.TestMetricFilterResult testMetricFilter(TestMetricFilterRequest testMetricFilterRequest)
Tests the filter pattern of a metric filter against a sample of log event messages. You can use this operation to validate the correctness of a metric filter pattern.
testMetricFilterRequest
- InvalidParameterException
- Returned if a parameter of the request is incorrectly specified.ServiceUnavailableException
- Returned if the service cannot complete the request.void shutdown()
ResponseMetadata getCachedResponseMetadata(AmazonWebServiceRequest request)
Response metadata is only cached for a limited period of time, so if you need to access this extra diagnostic information for an executed request, you should use this method to retrieve it as soon as possible after executing a request.
request
- The originally executed request.Copyright © 2016. All rights reserved.