# Working with Bulk APIs

#### Steven M. Mortimer

#### 2020-07-12

## Using the Bulk API

First, load the {salesforcer} and {dplyr} packages and login, if needed.

    library(dplyr, warn.conflicts = FALSE)
    library(salesforcer)
    sf_auth()

For really large inserts, updates, deletes, upserts, and queries you can just add `api_type = "Bulk 1.0"` to most functions to get the benefits of using the Bulk API instead of the SOAP or REST APIs. The change you have to make from using the REST API to the Bulk 1.0 API as simple as adding `api_type="Bulk 1.0"` to your function arguments. First, let’s build a `tbl_df` with two new records to be created.

    n <- 4
    prefix <- paste0("Bulk-", as.integer(runif(1,1,100000)), "-")
    new_contacts <- tibble(FirstName = rep("Test", n),
                           LastName = paste0("Contact-Create-", 1:n),
                           My_External_Id__c=paste0(prefix, letters[1:n]))

There are some differences in the way the REST API returns response information vs. the Bulk 1.0 API. However, the changes in Salesforce are exactly the same for these two calls.

    # REST
    rest_created_records <- sf_create(new_contacts[1:2,],
                                      object_name="Contact",
                                      api_type="REST")
    rest_created_records
    #> # A tibble: 2 x 2
    #>   id                 success
    #>   <chr>              <lgl>
    #> 1 0033s000014AlCJAA0 TRUE
    #> 2 0033s000014AlCKAA0 TRUE

    # Bulk
    bulk_created_records <- sf_create(new_contacts[3:4,],
                                      object_name="Contact",
                                      api_type="Bulk 1.0")
    bulk_created_records
    #> # A tibble: 2 x 4
    #>   Id                 Success Created Error
    #>   <chr>              <lgl>   <lgl>   <lgl>
    #> 1 0033s000014AlCOAA0 TRUE    TRUE    NA
    #> 2 0033s000014AlCPAA0 TRUE    TRUE    NA

## A Complete Bulk API Workflow

To show a more lengthy example of using the Bulk 1.0 API, below is a workflow of that creates 2 records, queries them, and deletes them. This is just an example. Typically, you’d want to use the Bulk APIs over the REST or SOAP APIs when dealing with over 10,000 records.

    object <- "Contact"
    created_records <- sf_create(new_contacts, object_name=object, api_type="Bulk 1.0")
    created_records
    #> # A tibble: 2 x 4
    #>   Id                 Success Created Error
    #>   <chr>              <lgl>   <lgl>   <lgl>
    #> 1 0033s000014AlCTAA0 TRUE    TRUE    NA
    #> 2 0033s000014AlCUAA0 TRUE    TRUE    NA

    # query bulk
    my_soql <- sprintf("SELECT Id,
                               FirstName,
                               LastName
                        FROM Contact
                        WHERE Id in ('%s')",
                       paste0(created_records$Id , collapse="','"))

    queried_records <- sf_query(my_soql, object_name=object, api_type="Bulk 1.0")
    queried_records
    #> # A tibble: 2 x 3
    #>   Id                 FirstName LastName
    #>   <chr>              <chr>     <chr>
    #> 1 0033s000014AlCTAA0 Test      Contact-Create-1
    #> 2 0033s000014AlCUAA0 Test      Contact-Create-2

    # delete bulk
    deleted_records <- sf_delete(queried_records$Id, object_name=object, api_type="Bulk 1.0")
    deleted_records
    #> # A tibble: 2 x 4
    #>   Id                 Success Created Error
    #>   <chr>              <lgl>   <lgl>   <lgl>
    #> 1 0033s000014AlCTAA0 TRUE    FALSE   NA
    #> 2 0033s000014AlCUAA0 TRUE    FALSE   NA

## Query Limitations

There is one limitation to Bulk queries is that it does not support the following operations or structures of SOQL:

- COUNT
- ROLLUP
- SUM
- GROUP BY CUBE
- OFFSET
- Nested SOQL queries
- Relationship fields
- Compound address fields
- Compound geolocation fields

## Using the Bulk 2.0 API

Salesforce has more recently introduced the Bulk 2.0 API which is supposed to be faster and have a more consistent JSON/REST based API than the Bulk 1.0 API. In some cases I have noticed that the ordering of the result records will differ from the order of the input data because the data is batched and processed asynchronously. by Salesforce instead of R. However, The Bulk 2.0 API returns every single field that was included in the call so if you have an identifying key your dataset, then it should not be a problem to join on that key with your original data to bring in the newly assigned Salesforce Id that is generated when the record was created in Salesforce. However, I have find it just seems wasteful to transfer all of the field information back after the query and have not found a significant performance improvement between the Bulk 1.0 and Bulk 2.0. Finally, note that the status field names (“Success”, “Created”, “Error”) are different from the Bulk 2.0 API.

    n <- 20
    prefix <- paste0("Bulk-", as.integer(runif(1,1,100000)), "-")
    new_contacts <- tibble(FirstName = rep("Test", n),
                           LastName = paste0("Contact-Create-", 1:n),
                           test_number__c = 1:n,
                           My_External_Id__c=paste0(prefix, letters[1:n]))

    created_records_v1 <- sf_create(new_contacts[1:10,],
                                    object_name = "Contact",
                                    api_type = "Bulk 1.0")
    created_records_v1
    #> # A tibble: 10 x 4
    #>   Id                 Success Created Error
    #>   <chr>              <lgl>   <lgl>   <lgl>
    #> 1 0033s000014AlC5AAK TRUE    TRUE    NA
    #> 2 0033s000014AlC6AAK TRUE    TRUE    NA
    #> 3 0033s000014AlC7AAK TRUE    TRUE    NA
    #> 4 0033s000014AlC8AAK TRUE    TRUE    NA
    #> 5 0033s000014AlCYAA0 TRUE    TRUE    NA
    #> # … with 5 more rows

    created_records_v2 <- sf_create(new_contacts[11:20,],
                                    object_name = "Contact",
                                    api_type = "Bulk 2.0")
    created_records_v2
    #> # A tibble: 10 x 7
    #>   sf__Id sf__Created sf__Error FirstName LastName My_External_Id_…
    #>   <chr>  <lgl>       <lgl>     <chr>     <chr>    <chr>
    #> 1 0033s… TRUE        NA        Test      Contact… Bulk-45620-k
    #> 2 0033s… TRUE        NA        Test      Contact… Bulk-45620-l
    #> 3 0033s… TRUE        NA        Test      Contact… Bulk-45620-m
    #> 4 0033s… TRUE        NA        Test      Contact… Bulk-45620-n
    #> 5 0033s… TRUE        NA        Test      Contact… Bulk-45620-o
    #> # … with 5 more rows, and 1 more variable: test_number__c <dbl>

## Performance Benchmarks for Bulk Queries

Below is a simple performance benchmark between the Bulk 1.0 and Bulk 2.0 APIs for a small query. In general, the Bulk 2.0 should be faster. One potential reason for the implementation in R to be faster is that the entire recordset is parsed at once from a downloaded CSV of the results when using the Bulk 1.0 API. The Bulk 2.0 retrieves the same data in large batches (typically 50,000 records at a time). I would encourage users to experiment to see what works best in their Salesforce Org.

    soql <- "SELECT Id, Name FROM Contact"
    bulk1_query <- function(){sf_query(soql, "Contact", api_type="Bulk 1.0")}
    bulk2_query <- function(){sf_query(soql, api_type="Bulk 2.0")} # Bulk 2.0 doesn't need object name

    res <- microbenchmark::microbenchmark(
      bulk1_query(),
      bulk2_query(),
      times=8,
      unit = "s"
    )
    res
    #> Unit: seconds
    #>           expr      min       lq     mean   median       uq      max neval
    #>  bulk1_query() 8.097592 8.345906 8.952017 8.531014 9.089109 11.58649     8
    #>  bulk2_query() 6.792107 6.972790 7.181035 7.162938 7.387852  7.60901     8

    suppressWarnings(suppressMessages(
      ggplot2::autoplot(res) +
        ggplot2::scale_y_continuous(name="Time [seconds]", n.breaks=6)
    ))