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You interact with a pipe by making calls to REST endpoints. This topic describes the Snowpipe REST API for defining the list of files to ingest and fetching reports of the load history.
Snowflake also provides Java and Python APIs that simplify working with the Snowpipe REST API.
In this Topic:
Data File Ingestion¶
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The Snowpipe API provides a REST endpoint for defining the list of files to ingest.
Endpoint: insertFiles
¶
Informs Snowflake about the files to be ingested into a table. A successful response from this endpoint means that Snowflake has recorded the list of files to add to the table. It does not necessarily mean the files have been ingested. For more details, see the response codes below.
In most cases, Snowflake inserts fresh data into the target table within a few minutes.
method
POST
post url
https://{account}.snowflakecomputing.com/v1/data/pipes/{pipeName}/insertFiles?requestId={requestId}
post body
A JSON object with the following attributes:
Attribute | Required | Description |
---|---|---|
account | Yes | Name of your account (provided by Snowflake). |
pipeName | Yes | Case-sensitive, fully-qualified pipe name. For example, myDatabase.mySchema.myPipe . |
requestId | No | String used to track requests through the system. We recommend providing a random string with each request, e.g. a UUID. |
content-type
text/plain
application/json
header fields
Accepts:
text/plain
or application/json
Authorization: BEARER <jwt_token>
- For
text/plain
, the contents are the list of path names, one per line. - For
application/json
, an example payload is:
Note that if you follow our recommended best practices by partitioning your data in the stage using logical, granular paths, the path values in the payload include the complete paths to the staged files.
Note
- The post can contain at most 5000 files.
- Each file path given must be <= 1024 bytes long when serialized as UTF-8.
response body
Response Codes:
- 200 — Success. Files added to the queue of files to ingest.
- 400 — Failure. Invalid request due to an invalid format, or limit exceeded.
- 404 — Failure.
pipeName
not recognized. - 429 — Failure. Request rate limit exceeded.
- 500 — Failure. Internal error occurred.
Response Payload: Free marriage license forms.
With a success code (200), the response is a JSON document containing the requestId and status. For some errors, the JSON document includes details about the error.
Load History Reports¶
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The Snowpipe API provides REST endpoints for fetching load reports.
Endpoint: insertReport
¶
Retrieves a report of files submitted via
insertFiles
whose contents were recently ingested into a table. Note that for large files, this may only be part of the file.Note the following limitations for this endpoint:
- The 10,000 most recent events are retained.
- Events are retained for a maximum of 10 minutes.
An event occurs when data from a file submitted via
insertFiles
has been committed to the table and is available to queries. The insertReport
endpoint can be thought of like the UNIX command tail. By calling this command repeatedly, it is possible to see the full history of events on a pipe over time. Note that the command must be called often enough to not miss events. How often depends on the rate files are sent to insertFiles
.method
GET
get url
https://<account>.snowflakecomputing.com/v1/data/pipes/<pipeName>/insertReport?requestId=<requestId>&beginMark=<beginMark>
header fields
Accept: text/plain or application/json
Authorization : BEARER <jwt_token>
get body
A JSON object with the following attributes:
Attribute | Required | Description |
---|---|---|
account | Yes | Name assigned to your account by Snowflake. In the URL you received from Snowflake, your account name is the first segment in the domain (e.g. xy12345 in https://xy12345.snowflakecomputing.com ). |
pipeName | Yes | Case-sensitive, fully-qualified pipe name. For example, myDatabase.mySchema.myPipe . |
requestId | No | String used to track requests through the system. We recommend providing a random string with each request, e.g. a UUID. |
beginMark | No | Marker, returned by a previous call to insertReport , that can be used to reduce the number of repeated events seen when repeatedly calling insertReport . Note that this is a hint, and repeated events may occasionally still be returned. |
response body
Response Codes:
- 200 — Success. Report returned.
- 400 — Failure. Invalid request due to an invalid format, or limit exceeded.
- 404 — Failure.
pipeName
not recognized. - 429 — Failure. Request rate limit exceeded.
- 500 — Failure. Internal error occurred.
Response Payload:
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A success response (200) contains information about files that have recently been added to the table. Note that this report may only represent a portion of a large file.
For example:
Response Fields:
Field | Type | Description |
---|---|---|
pipe | String | The fully-qualified name of the pipe. |
completeResult | Boolean | false if an event was missed between the supplied beginMark and the first event in this report history. Otherwise, true . |
nextBeginMark | String | beginMark to use on the next request to avoid seeing duplicate records. Note that this value is a hint. Duplicates can still occasionally occur. |
files | Array | An array of JSON objects, one object for each file that is part of the history response. |
String | The file path relative to the stage location. | |
String | Either the stage ID (internal stage) or the S3 bucket (external stage) defined in the pipe. | |
Long | File size, in bytes. | |
String | Time that this file was received for processing. Format is ISO-8601 in UTC time zone. | |
String | Time that data from this file was last inserted into the table. Format is ISO-8601 in UTC time zone. | |
Long | Number of rows inserted into the target table from the file. | |
Long | Number of rows parsed from the file. Rows with errors may be skipped. | |
Integer | Number of errors seen in the file | |
Integer | Number of errors allowed in the file before it is considered failed (based on ON_ERROR copy option). | |
String | Error message for the first error encountered in this file. | |
Long | Line number of the first error. | |
Long | Character position of the first error. | |
String | Column name where the first error occurred. | |
String | General error describing why the file was not processed. | |
Boolean | Indicates whether the file was completely processed successfully. | |
String | Load status for the file: | |
| ||
| ||
| ||
|
[1] Values are only supplied for these fields when files include errors.
Endpoint: loadHistoryScan
¶
Fetches a report about ingested files whose contents have been added to table. Note that for large files, this may only be part of the file. This endpoint differs from
insertReport
in that it views the history between two points in time. There is a maximum of 10,000 items returned, but multiple calls can be issued to cover the desired time range.Important
This endpoint is rate limited to avoid excessive calls. To help avoid exceeding the rate limit (error code 429), we recommend relying more heavily on
insertReport
than loadHistoryScan
. When calling loadHistoryScan
, specify the most narrow time range that includes a set of data loads. For example, reading the last 10 minutes of history every 8 minutes would work well. Trying to read the last 24 hours of history every minute will result in 429 errors indicating a rate limit has been reached. The rate limits are designed to allow each history record to be read a handful of times.For a more comprehensive view, without these limits, Snowflake provides an Information Schema table function, COPY_HISTORY, that returns the load history of a pipe or table.
method
GET
get url
https://{account}.snowflakecomputing.com/v1/data/pipes/{pipeName}/loadHistoryScan?startTimeInclusive=<startTime>&endTimeExclusive=<endTime>&requestId=<requestId>
header fields
Accept: text/plain or application/json
Authorization : BEARER <jwt_token>
get body
A JSON object with the following attributes:
Attribute | Required | Description |
---|---|---|
account | Yes | Name assigned to your account by Snowflake. In the URL you received from Snowflake, your account name is the first segment in the domain (e.g. xy12345 in https://xy12345.snowflakecomputing.com ). |
pipeName | Yes | Case-sensitive, fully-qualified pipe name. For example, myDatabase.mySchema.myPipe . |
startTimeInclusive Denver ii screening manual 2017. The authors concluded that a suspect Denver II “should lead to careful monitoring and rescreening unless provider or parental concern suggests the need for immediate referral.” Among children 18–72 months old, the prevalence of abnormality was 0.43 and the positive predictive value of the Denver II was 0.77, negative predictive value of 0.89, sensitivity 0.86, and specificity of 0.81. | Yes | Timestamp in ISO-8601 format. Start of the time range to retrieve load history data. |
endTimeExclusive | No | Timestamp in ISO-8601 format. End of the time range to retrieve load history data. If omitted, then CURRENT_TIMESTAMP() is used as the end of the range. |
requestId | No | String used to track requests through the system. We recommend providing a random string with each request (e.g. a UUID). |
response body
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Response Codes:
- 200 — Success. Load History scan results are returned.
- 400 — Failure. Invalid request due to an invalid format, or limit exceeded.
- 404 — Failure.
pipeName
not recognized. - 429 — Failure. Request rate limit exceeded.
- 500 — Failure. Internal error occurred.
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Response Payload:
A success response (200) contains information about files that have recently been added to the table. Note that this report may only represent a portion of a large file.
For example:
Response Fields:
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Field | Type | Description |
---|---|---|
pipe | String | Fully-qualified name of the pipe. |
completeResult | Boolean | false if the report is incomplete (i.e. the number of entries in the specified time range exceeds the 10,000 entry limit). If false , the user can specify the current rangeEndTime value as the startTimeInclusive value for the next request to proceed to the next set of entries. |
startTimeInclusive | String | Starting timestamp (in ISO-8601 format) provided in the request. |
endTimeExclusive | String | Ending timestamp (in ISO-8601 format) provided in the request. |
rangeStartTime | String | Timestamp (in ISO-8601 format) of the oldest entry in the files included in the response. |
rangeEndTime | String | Timestamp (in ISO-8601 format) of the latest entry in the files included in the response. |
files | Array | An array of JSON objects, one object for each file that is part of the history response. Within the array, the response fields are the same as those returned in the insertReport response. |