jpayne@4
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1 "Grab SRR numbers from Bioprojects and sub-bioprojects via Eutils"
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2
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3 import requests
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4 import sys
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5 import csv
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6 import os
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7
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8 try:
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9 from itertools import batched
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10 except ImportError:
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11 from itertools import islice
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12 def batched(iterable, n):
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13 "Batch data into tuples of length n. The last batch may be shorter."
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14 # batched('ABCDEFG', 3) --> ABC DEF G
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15 if n < 1:
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16 raise ValueError('n must be at least one')
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17 it = iter(iterable)
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18 while batch := tuple(islice(it, n)):
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19 yield batch
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20 from functools import cmp_to_key
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21 from time import sleep
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22 from xml.etree import ElementTree as xml
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23
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24 esearch = "https://eutils.ncbi.nlm.nih.gov/entrez/eutils/esearch.fcgi"
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25 esummary = "https://eutils.ncbi.nlm.nih.gov/entrez/eutils/esummary.fcgi"
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26 elink = "https://eutils.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi"
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27
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28
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29 import logging
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30 logging.basicConfig(level=logging.INFO)
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31
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32 logger = logging.getLogger("bio2srr")
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33
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34 extra_params = {}
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35
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36 api_key = os.environ.get("NCBI_API_KEY")
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37
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38 if api_key:
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39 logger.info(f"Using NCBI API key {api_key[:4]}{'*' * (len(api_key) - 8)}{api_key[-4:]}")
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40 extra_params["api_key"] = api_key
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41
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42 def log(msg):
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43 if api_key:
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44 logger.info(msg.replace(api_key, f"{api_key[:4]}{'*' * (len(api_key) - 8)}{api_key[-4:]}")) # fix logging later
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45 else:
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46 logger.info(msg)
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47
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48 def get_tag(root, tag):
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49 val = root.find(tag)
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50 if val is not None:
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51 return val.text
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52 log(f"No result for {tag}")
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53
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54
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55
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56 def header_sort_override(a, b):
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57 if a == b:
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58 return 0
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59 try:
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60 for name in ["bioproject", "srr_accession", "biosample_accession", "organism", "taxid", "package",]:
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61 if a == name:
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62 return -1
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63 if b == name:
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64 return 1
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65 except:
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66 pass
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67 if a < b:
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68 return -1
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69 else:
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70 return 1
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71
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72 hso = cmp_to_key(header_sort_override)
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73
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74 def resolve_bioproject_ids_and_links(bioproject_id_list):
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75 "Recursively follow bioproject and biosample links, yield biosample UID's and biosample XML"
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76 for i, (bioproject, bioproject_id) in enumerate(bioproject_id_list):
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77 log(f"Processing {bioproject} ({bioproject_id}) {i+1}/{len(bioproject_id_list)}")
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78 #get bioproject to bioproject links
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79 response = requests.get(elink, params=dict(db="bioproject", dbfrom="bioproject", id=bioproject_id, format="json", **extra_params))
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80 response.raise_for_status()
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81 reply = response.json()
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82 linksets = reply.get("linksets", [{}])[0].get("linksetdbs", [0,0,{}])
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83 if len(linksets) >= 3:
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84 for id in linksets[2].get("links", []): #third index is the up to down links
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85 response = requests.get(esummary, params=dict(id=id, db="bioproject", format="json"))
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86 response.raise_for_status()
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87 replyy = response.json()
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88 biop = replyy["result"][id]["project_acc"]
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89 if id not in bioproject_id_list:
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90 bioproject_id_list.append((biop, id)) # recurse over bioproject links
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jpayne@4
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91 # get bioproject to biosample links
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92 response = requests.get(elink, params=dict(db="biosample", dbfrom="bioproject", id=bioproject_id, format="json", **extra_params))
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93 response.raise_for_status()
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94 reply = response.json()
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95 links = reply.get("linksets", [{}])[0].get("linksetdbs", [{}])[0].get("links", [])
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96 log(f"Found {len(links)} biosample links for {bioproject} ({bioproject_id})")
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97 for ids in batched(links, 200):
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98 response = requests.get(esummary, params=dict(id=",".join(ids), db="biosample", format="json"))
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99 response.raise_for_status()
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100 replyy = response.json()
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101 for field, value in replyy.get("result", {}).items():
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102 if "uids" not in field:
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103 yield bioproject, field, value["sampledata"] # this is XML, deleriously
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104 sleep(1 if not api_key else 0.1)
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105
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106
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107 biosample_example = """
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108 <BioSample access="public" publication_date="2020-12-21T00:00:00.000" last_update="2022-06-23T17:45:35.674" submission_date="2020-12-21T15:08:05.690" id="17131268" accession="SAMN17131268">
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109 <Ids>
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110 <Id db="BioSample" is_primary="1">SAMN17131268</Id>
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111 <Id db_label="Sample name">CJP19-D996</Id>
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112 </Ids>
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113 <Description>
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114 <Title>Pathogen: environmental/food/other sample from Campylobacter jejuni</Title>
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115 <Organism taxonomy_id="197" taxonomy_name="Campylobacter jejuni">
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116 <OrganismName>Campylobacter jejuni</OrganismName>
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117 </Organism>
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118 </Description>
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119 <Owner>
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120 <Name url="http://www.fda.gov/Food/FoodScienceResearch/WholeGenomeSequencingProgramWGS/default.htm" abbreviation="CFSAN">FDA Center for Food Safety and Applied Nutrition</Name>
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121 </Owner>
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122 <Models>
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123 <Model>Pathogen.env</Model>
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124 </Models>
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125 <Package display_name="Pathogen: environmental/food/other; version 1.0">Pathogen.env.1.0</Package>
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126 <Attributes>
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127 <Attribute attribute_name="strain" harmonized_name="strain" display_name="strain">CJP19-D996</Attribute>
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128 <Attribute attribute_name="collection_date" harmonized_name="collection_date" display_name="collection date">missing</Attribute>
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129 <Attribute attribute_name="geo_loc_name" harmonized_name="geo_loc_name" display_name="geographic location">missing</Attribute>
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130 <Attribute attribute_name="collected_by" harmonized_name="collected_by" display_name="collected by">CDC</Attribute>
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131 <Attribute attribute_name="lat_lon" harmonized_name="lat_lon" display_name="latitude and longitude">missing</Attribute>
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132 <Attribute attribute_name="isolation_source" harmonized_name="isolation_source" display_name="isolation source">missing</Attribute>
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133 <Attribute attribute_name="isolate" harmonized_name="isolate" display_name="isolate">CFSAN091032</Attribute>
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134 <Attribute attribute_name="project name" harmonized_name="project_name" display_name="project name">GenomeTrakr</Attribute>
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135 <Attribute attribute_name="sequenced by" harmonized_name="sequenced_by" display_name="sequenced by">FDA Center for Food Safety and Applied Nutrition</Attribute>
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136 </Attributes>
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137 <Links>
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138 <Link type="entrez" target="bioproject" label="PRJNA681235">681235</Link>
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139 </Links>
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140 <Status status="live" when="2020-12-21T15:08:05.693"/>
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141 </BioSample>
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142
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143 """
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144
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145 def flatten_biosample_xml(biosampxml):
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146 root = xml.fromstring(biosampxml)
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147 accession = get_tag(root, r'.//Id[@db="BioSample"]')
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148 # sample_name = get_tag(root, r'.//Id[@db_label="Sample name"]')
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149 organism = get_tag(root, r".//OrganismName")
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150 tax_id = root.find(r".//Organism").attrib.get("taxonomy_id")
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151 package = get_tag(root, r".//Package")
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152 sampledict = dict(
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153 biosample_accession=accession,
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154 # sample_name=sample_name,
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155 organism = organism,
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156 taxid = tax_id,
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157 package = package
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158 )
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159 for attribute in root.findall("Attributes/Attribute"):
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160 sampledict[attribute.attrib.get("harmonized_name", attribute.attrib['attribute_name'])] = attribute.text
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161
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162 return sampledict
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163
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164
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jpayne@12
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165 def yield_sra_runs_from_sample(biosample):
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166 sleep(1 if not api_key else 0.1)
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167 response = requests.get(elink, params=dict(id=biosample, dbfrom="biosample", db="sra", format="json", **extra_params))
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168 response.raise_for_status()
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169 reply = response.json()
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170 for ids in batched(reply.get("linksets", [{}])[0].get("linksetdbs", [{}])[0].get("links", []), 200):
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171 sleep(1 if not api_key else 0.1)
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172 response = requests.get(esummary, params=dict(id=','.join(ids), db="sra", format="json", **extra_params))
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173 response.raise_for_status()
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174 replyy = response.json()
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175 for field, value in replyy.get("result", {}).items():
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176 if "uids" not in field:
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177 yield field, value.get("runs")
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178
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179
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180 runs_example = """
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181 <Run acc="SRR13167188" total_spots="827691" total_bases="385043067" load_done="true" is_public="true" cluster_name="public" static_data_available="true"/>
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182 <Run acc="SRR13167189" total_spots="827691" total_bases="385043067" load_done="true" is_public="true" cluster_name="public" static_data_available="true"/>
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183 """
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184
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185 def flatten_runs(runxml):
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186 root = xml.fromstring(f"<data>{runxml}</data>") # gotta fix their garbage embedded XML since it isn't singly-rooted
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187 for run in root.findall(".//Run"):
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188 if run.attrib["is_public"] == "false":
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189 logger.warning(f"Skipping non-public run {run.attrib['acc']}")
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190 yield dict(
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191 sra_run_accession = run.attrib["acc"],
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192 total_spots = run.attrib["total_spots"],
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193 total_bases = run.attrib["total_bases"],
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194 )
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195
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196
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197
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198 def main(starting_bioproject):
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199 rows = []
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200 response = requests.get(esearch, params=dict(db="bioproject", term=starting_bioproject, field="PRJA", format="json"))
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201 response.raise_for_status()
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202 reply = response.json()
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203 try:
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204 bioproject_id = reply["esearchresult"]["idlist"][0]
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205 log(f"Found UID {bioproject_id} for '{starting_bioproject}'")
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206 except IndexError:
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207 logger.error(f"No results found for '{starting_bioproject}'. Error was \"{reply['esearchresult']['warninglist']['outputmessages']}\"")
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208 sys.exit(1)
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209 sleep(1 if not api_key else 0.1)
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210 for bioproject, biosample, biosample_xml in resolve_bioproject_ids_and_links([(starting_bioproject, bioproject_id)]):
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211 try:
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212 sampledict = flatten_biosample_xml(biosample_xml)
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213 except KeyError:
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214 log(biosample_xml)
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215 raise
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216 sampledict["bioproject"] = bioproject
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217 noruns = True
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218 for sra, runs in yield_sra_runs_from_sample(biosample):
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219 for run in flatten_runs(runs.strip()):
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220 noruns = False
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221 run.update(sampledict)
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222 rows.append(run)
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223 if noruns:
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224 rows.append(sampledict)
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225
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226 log(f"Writing {len(rows)} rows to metadata.tsv")
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227
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228 header = set()
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229 for row in rows:
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230 for key in row.keys():
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231 header.add(key)
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232
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233 header = sorted(list(header), key=hso)
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234 # logger.info(f"Header: {header}")
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235
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236 rows.sort(key=lambda x: x["biosample_accession"])
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237
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238 with open("metadata.tsv", "w") as f:
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239 writer = csv.DictWriter(f, fieldnames=header, delimiter="\t", dialect="excel")
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240 writer.writeheader()
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241 writer.writerows(rows)
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242
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jpayne@12
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243 # check for duplicate runs and unreleased samples
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244
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245 accessions = [row.get("sra_run_accession") for row in rows if row.get("sra_run_accession")]
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246
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247 raw_length = len(accessions)
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248
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249 accessions = sorted(list(set(accessions)))
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250
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251 if raw_length < len(rows):
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252 logger.warning(f"Bioproject {starting_bioproject} contains unreleased samples. {len(rows) - raw_length} samples will not be included in accessions.txt")
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253
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254 if len(accessions) < raw_length:
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255 logger.warning(f"Some SRA runs may have been reached through multiple projects or samples. accessions.txt will be deduplicated but the metadata table is not")
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256
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257 log(f"Writing {len(accessions)} unique accessions to accessions.txt")
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258
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259 with open("accessions.txt", "w") as f:
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260 f.writelines(accessions)
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261
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262
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263 if __name__ == "__main__":
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264 b = sys.argv[1].strip()
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265 log(f"Starting with {b}")
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266 try:
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267 main(b)
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268 except requests.HTTPError as e:
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269 logger.error(e)
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270 sys.exit(1)
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271
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272
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274
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275
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