Dynamic file error when file previously did not exist

[shirdekel]

Prework

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Description

When running my plan, I get the following error:

> make(the_plan)
Error in if (trigger_format_file(target, meta, config)) { : 
  missing value where TRUE/FALSE needed

I know that it comes from a dynamic file target (with static branching), that the file (in this case a directory, actually) previously didn't exist, and that the error is fixed when I change the target name. When I investigate the error (at trigger_format_file()), the issue seems to be that that hash_old <- meta_old$format_file_hash evaluates to NA, in turn because meta_old$format_file_hash is NA. Unfortunately I've been struggling to create a reprex, because I don't know enough about the internals of drake to work out how to get to meta_old. And also the below example works, even though the file doesn't exist:

library(drake)

plan <- 
  drake_plan(
  x = target(
    file.path(tempdir(), "x"),
    target = "file"
  )
)

make(plan)
#> ℹ Consider drake::r_make() to improve robustness.
#> ▶ target x

^{Created on 2020-09-22 by the reprex package (v0.3.0)}

Session info

devtools::session_info()
#> ─ Session info ───────────────────────────────────────────────────────────────
#>  setting  value                       
#>  version  R version 4.0.2 (2020-06-22)
#>  os       macOS Mojave 10.14.6        
#>  system   x86_64, darwin17.0          
#>  ui       X11                         
#>  language (EN)                        
#>  collate  en_AU.UTF-8                 
#>  ctype    en_AU.UTF-8                 
#>  tz       Australia/Sydney            
#>  date     2020-09-22                  
#> 
#> ─ Packages ───────────────────────────────────────────────────────────────────
#>  package     * version     date       lib source                         
#>  assertthat    0.2.1       2019-03-21 [1] CRAN (R 4.0.0)                 
#>  backports     1.1.10      2020-09-15 [1] CRAN (R 4.0.2)                 
#>  base64url     1.4         2018-05-14 [1] CRAN (R 4.0.0)                 
#>  callr         3.4.4       2020-09-07 [1] CRAN (R 4.0.2)                 
#>  cli           2.0.2       2020-02-28 [1] CRAN (R 4.0.0)                 
#>  crayon        1.3.4       2017-09-16 [1] CRAN (R 4.0.0)                 
#>  desc          1.2.0       2018-05-01 [1] CRAN (R 4.0.0)                 
#>  devtools      2.3.0       2020-04-10 [1] CRAN (R 4.0.0)                 
#>  digest        0.6.25      2020-02-23 [1] CRAN (R 4.0.0)                 
#>  drake       * 7.12.5.9000 2020-09-22 [1] Github (ropensci/drake@9fb42f5)
#>  ellipsis      0.3.1       2020-05-15 [1] CRAN (R 4.0.0)                 
#>  evaluate      0.14        2019-05-28 [1] CRAN (R 4.0.0)                 
#>  fansi         0.4.1       2020-01-08 [1] CRAN (R 4.0.0)                 
#>  filelock      1.0.2       2018-10-05 [1] CRAN (R 4.0.0)                 
#>  fs            1.5.0       2020-07-31 [1] CRAN (R 4.0.2)                 
#>  glue          1.4.2       2020-08-27 [1] CRAN (R 4.0.2)                 
#>  highr         0.8         2019-03-20 [1] CRAN (R 4.0.0)                 
#>  hms           0.5.3       2020-01-08 [1] CRAN (R 4.0.0)                 
#>  htmltools     0.5.0       2020-06-16 [1] CRAN (R 4.0.0)                 
#>  igraph        1.2.5       2020-03-19 [1] CRAN (R 4.0.0)                 
#>  knitr         1.29        2020-06-23 [1] CRAN (R 4.0.2)                 
#>  lifecycle     0.2.0       2020-03-06 [1] CRAN (R 4.0.0)                 
#>  magrittr      1.5         2014-11-22 [1] CRAN (R 4.0.0)                 
#>  memoise       1.1.0       2017-04-21 [1] CRAN (R 4.0.0)                 
#>  pillar        1.4.6       2020-07-10 [1] CRAN (R 4.0.1)                 
#>  pkgbuild      1.1.0       2020-07-13 [1] CRAN (R 4.0.2)                 
#>  pkgconfig     2.0.3       2019-09-22 [1] CRAN (R 4.0.0)                 
#>  pkgload       1.1.0       2020-05-29 [1] CRAN (R 4.0.0)                 
#>  prettyunits   1.1.1       2020-01-24 [1] CRAN (R 4.0.0)                 
#>  processx      3.4.4       2020-09-03 [1] CRAN (R 4.0.2)                 
#>  progress      1.2.2       2019-05-16 [1] CRAN (R 4.0.0)                 
#>  ps            1.3.4       2020-08-11 [1] CRAN (R 4.0.2)                 
#>  purrr         0.3.4       2020-04-17 [1] CRAN (R 4.0.0)                 
#>  R6            2.4.1       2019-11-12 [1] CRAN (R 4.0.0)                 
#>  remotes       2.1.1       2020-02-15 [1] CRAN (R 4.0.0)                 
#>  rlang         0.4.7       2020-07-09 [1] CRAN (R 4.0.1)                 
#>  rmarkdown     2.3         2020-06-18 [1] CRAN (R 4.0.0)                 
#>  rprojroot     1.3-2       2018-01-03 [1] CRAN (R 4.0.0)                 
#>  sessioninfo   1.1.1       2018-11-05 [1] CRAN (R 4.0.0)                 
#>  storr         1.2.1       2018-10-18 [1] CRAN (R 4.0.0)                 
#>  stringi       1.5.3       2020-09-09 [1] CRAN (R 4.0.2)                 
#>  stringr       1.4.0       2019-02-10 [1] CRAN (R 4.0.0)                 
#>  testthat      2.3.2       2020-03-02 [1] CRAN (R 4.0.0)                 
#>  tibble        3.0.3       2020-07-10 [1] CRAN (R 4.0.1)                 
#>  tidyselect    1.1.0       2020-05-11 [1] CRAN (R 4.0.0)                 
#>  txtq          0.2.3       2020-06-23 [1] CRAN (R 4.0.2)                 
#>  usethis       1.6.1       2020-04-29 [1] CRAN (R 4.0.0)                 
#>  vctrs         0.3.4       2020-08-29 [1] CRAN (R 4.0.2)                 
#>  withr         2.2.0       2020-04-20 [1] CRAN (R 4.0.0)                 
#>  xfun          0.17        2020-09-09 [1] CRAN (R 4.0.2)                 
#>  yaml          2.2.1       2020-02-01 [1] CRAN (R 4.0.0)                 
#> 
#> [1] /Library/Frameworks/R.framework/Versions/4.0/Resources/library

Any tips on how to further diagnose this?

[wlandau]

Internally, it should be acceptable to have a NA file hash. Does fc917bd fix the issue?

[shirdekel]

Yes it does, thanks!